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Instrument Scientist for Polarised SANS

The European Spallation Source is one of the largest science and technology infrastructure projects being built today. The project includes the most powerful linear proton accelerator ever built, a five-tonne, helium-cooled tungsten target wheel, 15 state-of-the-art neutron instruments, a suite of laboratories, and a super-computing data management and software development centre. In the context of its history and future as a scientific organisation, howev... Visa mer
The European Spallation Source is one of the largest science and technology infrastructure projects being built today. The project includes the most powerful linear proton accelerator ever built, a five-tonne, helium-cooled tungsten target wheel, 15 state-of-the-art neutron instruments, a suite of laboratories, and a super-computing data management and software development centre. In the context of its history and future as a scientific organisation, however, it is more than the sum of its parts. It is a brand-new Big Science organisation, built from the ground up.
Come and shape the future of Science with us!
About the role:
 
ESS is at an exciting turning point. It is in transition from being a construction site, to being an operating facility. To help us realise our goal of being the most powerful neutron source in the world, we are now looking for an Instrument Scientist for Polarised SANS to join our Large Scale Structures Division.
SKADI is a polarised small-angle neutron scattering instrument designed specifically with the needs of the complex soft matter, materials science, and hard condensed matter communities in mind. You will be supported by the SKADI team including the lead scientist, data scientist, operations engineer, and our in-kind partners - Forschungszentrum Jülich (FZJ) and Laboratoire Léon Brillouin (LLB). Your role will include developing the hard condensed matter programme for the instrument, performing hot commissioning activities, and preparing the polarised SANS capabilities of the instrument for user operations, including specifying data processing and data analysis requirements for polarised SANS.
The SKADI instrument team are responsible for completion of installation of the instrument, for commissioning of the instrument, both with and without neutrons, and for planning and implementation of further developments and upgrades of the instrument. The team will make delivery of state-of-the-art scientific capabilities for internal and external users to enable the wider science community to advance science and technology and for pushing the state-of-the-art capabilities of polarised SANS.
Responsibilities as an Instrument Scientist for Polarised SANS:
Work with the SKADI team, and our in-kind partners FZJ and LLB, to plan and execute the instrument cold and hot commissioning.
Support the user programme at ESS by performing local contacting duties and collaborative research.
Help to prepare "Early Science" experiments to be carried out during the initial operation phase of ESS that will demonstrate the capabilities of SKADI.
Provide expertise in the scientific application of polarised SANS and polarised SANS method development, including working with scientists from other divisions.
Working with the Polarisation team on the development of 3He and solid state polariser and analyser solutions.
Continue and develop your own research in line with the SKADI science case.
Establish and maintain collaborations with universities, laboratories and other relevant actors.
Engage with the international SANS community, e.g. through presentations at conferences/workshops and experiments at other facilities.
Supervise postdocs and students as needed.

This is a full-time/fixed-term (around 3 years) position based at the ESS Campus in Lund, Sweden.
About you:
We require that you have:
PhD in the physical sciences with research interests and publication record aligned with the hard condensed matter and polarised SANS aspects of the SKADI instrument science case.
Experience and technical interest in polarised SANS, preferably using time-of-flight techniques
Detailed knowledge of polarised SANS data treatment and modeling.
Ability to work in a team with people of a variety of disciplines in an international collaboration.
Excellent oral and written English skills

The project requires occasional travel between ESS and partner facilities, why it´s important that you have the flexibility to travel.
It's beneficial if you also have experience from operation and development of neutron instrumentation and/or instrument control, if you have programming experience in Python And/or complementary experience from and competence in X-ray reflectometry or grazing-incidence scattering.
A career at ESS gives you the opportunity to contribute to the future discoveries within neutron science at a stunning, brand-new workplace filled with innovative minds and brilliant people from across the globe. We offer market competitive, individualized compensation which is differentiated according to role, responsibilities, individual skills, abilities and achievements as well as monthly pension contributions on top of your salary. You can learn more about the exciting benefits of working at ESS on our https://ess.eu/careers.
To apply:
If you see yourself in what we're looking for, please provide your CV and motivation letter in English by clicking on "apply" and following the instructions. Please be aware that we can only accept direct applications made via the ESS website. Submit your application as soon as you can, last day to apply is on the 20th of May 2026.
This role requires additional background screening processes and health and safety checks, which will be performed during the recruitment and onboarding processes.
For further information regarding the recruitment process, please contact Talent Acquisition Specialist Sofie Berg on mailto:[email protected]
For information about the position, please contact Head of Division Large Scale Structures Andrew Jackson on mailto:[email protected]
For trade union information, please contact Unionen representative Nerusha Naicker on mailto:[email protected] or SACO/Swedish Association of Graduate Engineers representative Marc Kickulies at mailto:[email protected] Visa mindre

Summer worker – Python Development for Automation Applications

The European Spallation Source (ESS) in Lund, Sweden is a partnership of 13 European countries with the mission to design, construct and operate the world’s most powerful neutron source. Working with us means being part of a challenging and exciting work environment, at a stunning, brand-new workplace filled with innovative minds and brilliant people from across the globe.   About the position  We are now looking to appoint a summer worker for the Motion C... Visa mer
The European Spallation Source (ESS) in Lund, Sweden is a partnership of 13 European countries with the mission to design, construct and operate the world’s most powerful neutron source.
Working with us means being part of a challenging and exciting work environment, at a stunning, brand-new workplace filled with innovative minds and brilliant people from across the globe.
 
About the position 
We are now looking to appoint a summer worker for the Motion Control Automation Group in the Neutron Scattering Instruments (NSS) Division. 
 
MCAG is responsible for deploying PLC motion control systems to the Neutron Scattering Instruments, delivered by European in-kind partners to ESS. The task of the group is to develop standards for motion at ESS and work with partners to implement these across the whole facility. The focus of the group is to support the construction of neutron instruments in NSS.
As an automation summer worker, you will work extensively with industrial control systems in close collaboration with experienced colleagues. The main assignment is to create an automation solution for one of our current robotic systems.
The main tasks would be:
Develop python scripts for machine vision automation applications.
Define needed interfaces between the system and the current automation application.
Create user interface for visualization.

About you
A suitable background for this position would be:
 
A university degree (or ongoing studies) in a relevant field such as computer science or control engineering.
Python programming experience.
Experience on automation/PLC systems is an advantage.
Interest in learning and contributing to develop automation tools.
Good written and oral communication skills in English.
Minimum age 18 years.

We believe that you enjoy communicating and collaborating with a variety of people in an international environment. You are good at taking initiative and not afraid to ask questions.
Your main competences supporting you in this job are creating and innovating as well as learning and researching.
Duration and location
This is a summer work position of 10 weeks. Planned start date is 15 June 2026 or per agreement.
Your workplace is on-site at ESS in Lund, Sweden. 
 
How to apply
Please provide your CV in English by clicking on “apply” and following the instructions. Please note that we only accept applications via the ESS website. The last day to apply is 6 May, 2026.
 
Certain roles at ESS require health and safety and/or security checks, which may be carried out during the recruitment process.  
Contact Persons 
For further information regarding the position, please contact Ruben Martinez Garcia, Automation Engineer - Motion Control, at mailto:[email protected].
 
For trade union information, please contact Unionen representative Nerusha Naicker at [email protected] or SACO/Swedish Association of Graduate Engineers representative Marc Kickulies at [email protected]
 
We look forward to receiving your application! Visa mindre

Summer worker – Automation Tester

The European Spallation Source (ESS) in Lund, Sweden is a partnership of 13 European countries with the mission to design, construct and operate the world’s most powerful neutron source. Working with us means being part of a challenging and exciting work environment, at a stunning, brand new workplace filled with innovative minds and brilliant people from across the globe.   About the position We are now looking to appoint a summer worker for the Digital S... Visa mer
The European Spallation Source (ESS) in Lund, Sweden is a partnership of 13 European countries with the mission to design, construct and operate the world’s most powerful neutron source.
Working with us means being part of a challenging and exciting work environment, at a stunning, brand new workplace filled with innovative minds and brilliant people from across the globe.
 
About the position
We are now looking to appoint a summer worker for the Digital Solutions group in the IT division. The Digital Solutions group is responsible for maintaining, developing, and deploying different applications.
 
As a Automation Tester summer worker, your tasks will primarily focus o support the team in the development and implementation of automated test scripts for different platforms and execute them in different environments.
About you
A suitable background for this position would be:
 
Having a background in Computer Science, Software Engineering, or a related field
Prior experience with test automation (e.g. TestComplete or Playwright or Selenium)
Experience with CI/CD implementation (e.g. GitLab and Kubernetes) is advantageous
Good knowledge of Scripting language - Java Scripts or JS or HTML
Good written and oral communication skills in English
Minimum age 18 years.

We believe that you enjoy communicating and collaborating with a variety of people in an international environment. You are good at taking initiative and not afraid to ask questions. You are a responsible and proactive person with the ability to propose and implement improvements within the scope of your assigned tasks.
Duration and location
This is a summer work position of 12 weeks. Planned start date is June 8, 2026 or per agreement.
 
Your workplace is on-site at ESS in Lund, Sweden.
 
 
How to apply
Please provide your CV in English by clicking on “apply” and following the instructions. Please note that we only accept applications via the ESS website. The last day to apply is 5 of May, 2026.
 
Certain roles at ESS require health and safety and/or security checks, which may be carried out during the recruitment process.
 
Contact Persons
For further information regarding the position, please contact Recruiting Manager, IT Operations and Support Group Leader, Johan Olander at [email protected]
 
For trade union information, please contact Unionen representative Nerusha Naicker at [email protected] or SACO/Swedish Association of Graduate Engineers representative Marc Kickulies at [email protected]
 
We look forward to receiving your application! Visa mindre

Summer worker – Junior Software Developer to ECDC group

The European Spallation Source (ESS) in Lund, Sweden is a partnership of 13 European countries with the mission to design, construct and operate the world’s most powerful neutron source. Working with us means being part of a challenging and exciting work environment, at a stunning, brand new workplace filled with innovative minds and brilliant people from across the globe.   About the position We are now looking to appoint a summer worker – Junior Software... Visa mer
The European Spallation Source (ESS) in Lund, Sweden is a partnership of 13 European countries with the mission to design, construct and operate the world’s most powerful neutron source.
Working with us means being part of a challenging and exciting work environment, at a stunning, brand new workplace filled with innovative minds and brilliant people from across the globe.
 
About the position
We are now looking to appoint a summer worker – Junior Software Developer to the Experiment Control and Data Collection Group (ECDC).
 
The ECDC Group aims to produce the right tools for scientists to carry out cutting?edge research, using all the capabilities of our next?generation neutron facility. The group is responsible for streamlining the user experience, building and supporting the complete software data acquisition chain, and supporting scientists at ESS with their control and data acquisition requirements.
As a Junior Software Developer summer worker, you will contribute to the development of advanced software solutions for experiment control and data processing in a large?scale scientific facility. You will play a key role in enhancing experiments at ODIN, including integration of the soft X?ray setup. You will work closely with scientists and engineers to build robust and maintainable software solutions.
Your main tasks will include:
Software development & system integration
Develop scientific experiment control software (e.g. NICOS, user interfaces).
Develop data acquisition and streaming solutions using Kafka and high?performance computing techniques.
Test, verify and validate software for experiment control and metadata/data readout.

Collaboration & project work
Improve systems in close collaboration with Instrument Scientists.
Work closely with the DMSC Division in Denmark, the Integrated Control Systems Division, technology groups, and external scientific partners.
Possibly contribute to open?source projects and engage in knowledge sharing with other research facilities.

 
About you
A suitable background for this position would be:
 
Finished or ongoing studies in Computer Science, Physics, Software Engineering, or a related field.
Programming skills in Python, and experience working in Linux environments.
Ability to work in multidisciplinary teams and collaborate with various stakeholders.
Good written and oral communication skills in English.
Minimum age: 18 years.

Additional merits would be:
Familiarity with data acquisition systems, instrumentation, and hardware/software integration.
Experience from large?scale research facilities (e.g. neutron sources, synchrotrons, particle accelerators).
Experience with additional programming languages such as C++, Rust, or JavaScript.
Knowledge of Agile methodologies, CI/CD workflows, and DevOps practices.

To thrive in the ECDC Group, you are driven, responsive, and proactive in identifying both problems and opportunities. We value collaboration highly and are looking for a true team player who enjoys working with people from diverse backgrounds and areas of expertise. Swedish language skills are a bonus, but the working language of ESS is English.
 
Duration and location
This is a summer work position of 8 weeks.
 
Planned start date is 15 June, 2026, or as agreed.
 
Your workplace will be on?site at ESS in Lund, Sweden.
 
 
How to apply
Please provide your CV in English by clicking on “apply” and following the instructions. Please note that we only accept applications via the ESS website. The last day to apply is 5 of May, 2026. 
 
Certain roles at ESS require health and safety and/or security checks, which may be carried out during the recruitment process.  
 
Contact Persons 
For further information regarding the position, please contact Recruiting Manager Vincent Hardion at [email protected].  
 
For trade union information, please contact Unionen representative Nerusha Naicker at [email protected] or SACO/Swedish Association of Graduate Engineers representative Marc Kickulies at [email protected]  
 
We look forward to receiving your application! Visa mindre

Neutron Detector Scientist

The European Spallation Source is one of the largest science and technology infrastructure projects being built today. The project includes the most powerful linear proton accelerator ever built, a five-tonne, helium-cooled tungsten target wheel, 15 state-of-the-art neutron instruments, a suite of laboratories, and a supercomputing data management and software development centre. In the context of its history and future as a scientific organisation, howeve... Visa mer
The European Spallation Source is one of the largest science and technology infrastructure projects being built today. The project includes the most powerful linear proton accelerator ever built, a five-tonne, helium-cooled tungsten target wheel, 15 state-of-the-art neutron instruments, a suite of laboratories, and a supercomputing data management and software development centre. In the context of its history and future as a scientific organisation, however, it is more than the sum of its parts. It is a brand-new Big Science organisation and we are building it from the ground up.
Come and be the future of Science with us!
About the role:
ESS is at an exciting turning point. It is in transition from being a construction site, to being an operating facility. To help us realise our goal of being the most powerful neutron source in the world, we are now looking to add a Detector Scientist for neutron detectors and detector system integration to our Detector Group.
As a Detector Scientist, you'll be part of ESS's largest and most critical projects where you'll play a pivotal role in verification and validation activities of neutron detectors which are at different stages of being integrated into detector systems across the ESS beamlines. You'll have the opportunity to participate in experimental campaigns to evaluate the performance of our neutron detectors, perform data processing and analysis, as well as support the integration, commissioning and operational readiness of detector systems.
What you will do:
Perform and report verification and validation activities (e.g. FAT, SAT, integration tests, commissioning tests) to ensure delivered detectors and peripheral systems, primarily in the Helium-3 work unit instruments, meet required specifications.
Coordinate on-site testing, installation, and commissioning activities, primarily for Helium-3 work unit instruments.
Support integration of detectors to subsystems (e.g. firmware and software) and utilities, primarily in Helium-3 work unit instruments.

The is a full-time. fixed-term position for a period of 3 years and is based at the ESS Campus in Lund, Sweden.
About you:
Our ideal candidate for this role will hold a PhD in physics or engineering and can demonstrate a strong background in neutron detection and the instrumentation of the corresponding detectors. While not required, experience in 3-He based detector technologies and data acquisition systems is advantageous. However, you should possess the hands-on practical skills necessary to prepare experimental setups for detector performance evaluation. Proficiency in data analysis and programming is essential, with a preference for experience in Python and/or C/C++.
 
We are building ESS from the ground up, so we need someone who is comfortable not only following procedures, but also creating them. You should thrive in a dynamic environment where your responsibilities span multiple projects. We attach great importance to personality and attitude, so we're looking for a real team player. Excellent communication and interpersonal skills are vital for effective collaboration with a diverse group of scientists, engineers, and technical staff within a multidisciplinary team where everyone is committed to helping this amazing project to realise its full potential. We need a hands-on self-starter who is able to work in a structured, orderly, responsible and – most importantly – safe way.
 
The working language of ESS is English and we need someone who can start as soon as possible. Knowledge of other European languages would be beneficial.
To apply:
A career at ESS gives you the opportunity to contribute to the future discoveries within neutron science at a stunning, brand-new workplace filled with innovative minds and brilliant people from across the globe. We offer market competitive, individualised compensation which is differentiated according to role, responsibilities, individual skills, abilities and achievements as well as monthly pension contributions on top of your salary.
If you see yourself in what we're looking for, please provide your CV and motivation letter in English by clicking on "apply" and following the instructions. Please be aware that we can only accept direct applications made via the ESS website. Submit your application as soon as you can and quote the job reference number ESD-79233 in your application.
This role requires additional background screening processes and health and safety checks, which will be performed during the recruitment process.
For further information regarding the position, please contact Talent Acquisition Specialist Daniel Nordin Baker on mailto:[email protected]
For trade union information, please contact Unionen representative Nerusha Naicker on mailto:[email protected] or SACO/Swedish Association of Graduate Engineers representative Marc Kickulies at mailto:[email protected] Visa mindre

Summer worker – Human Resources

The European Spallation Source (ESS) in Lund, Sweden is a partnership of 13 European countries with the mission to design, construct and operate the world’s most powerful neutron source. Working with us means being part of a challenging and exciting work environment, at a stunning, brand new workplace filled with innovative minds and brilliant people from across the globe.    About the position We are now looking to appoint a summer worker for the Human... Visa mer
The European Spallation Source (ESS) in Lund, Sweden is a partnership of 13 European countries with the mission to design, construct and operate the world’s most powerful neutron source.

Working with us means being part of a challenging and exciting work environment, at a stunning, brand new workplace filled with innovative minds and brilliant people from across the globe. 

 

About the position
We are now looking to appoint a summer worker for the Human Resources Division. The HR team leads the work to define, find, attract, recruit, relocate, develop and retain employees, and also contribute to making ESS an attractive and inspiring workplace. HR supports and coaches the management, line managers and employees in the work to reach ESS strategies and goals.

As a Human Resources summer worker your main tasks will be to carry out HR related tasks such as general HR admin, archiving, digital clean-up among folders, documents etc.,  answering queries from the organisation, e.g. verbally, in writing, and via our ticket system, joining meetings, taking and distributing minutes, preparing presentations in PowerPoint, updating our intranet from an HR perspective, proofreading and feedbacking on documents, review other HR related information. 

About you
A suitable background for this position would be:


• Ongoing HR education at university, or similar.
• Some administrative experience.
• Some customer service experience.
• Good written and oral communication skills in English.
• Minimum age 18 years.

 We believe that you enjoy communicating and collaborating with a variety of people in an international environment, and helping them out when needed. You are good at taking initiative and not afraid to ask questions in order to move forward with your work. You are also thorough and have an organisational ability.

Duration and location
This is a summer work position of 1-2 months, as agreed. Planned start date is in June, 2026 or per agreement.

Your workplace is on-site at ESS in Lund, Sweden.

 

How to apply
Please provide your CV in English by clicking on “apply” and following the instructions. Please note that we only accept applications via the ESS website. The last day to apply is 2026-04-13.

Certain roles at ESS require health and safety and/or security checks, which may be carried out during the recruitment process.  

Contact persons
For further information regarding the position, please contact Recruiting Manager Kristina Bacos at [email protected]  

For trade union information, please contact Unionen representative Nerusha Naicker at [email protected] or SACO/Swedish Association of Graduate Engineers representative Marc Kickulies at [email protected]  

 

We look forward to receiving your application! Visa mindre

Lead Laboratory Engineer

The European Spallation Source (ESS) is one of the largest science and technology infrastructure projects being built today. Our goal is to become the brightest source of neutrons for science and technology and be operational by the end of this decade. Join us in shaping the future of science - from the ground up. About the role: We are seeking a Lead Laboratory Engineer to join our Mechanical Measurements Lab (MML) in the Mechanical Engineering and Techno... Visa mer
The European Spallation Source (ESS) is one of the largest science and technology infrastructure projects being built today. Our goal is to become the brightest source of neutrons for science and technology and be operational by the end of this decade.
Join us in shaping the future of science - from the ground up.
About the role:
We are seeking a Lead Laboratory Engineer to join our Mechanical Measurements Lab (MML) in the Mechanical Engineering and Technology (META) Section. This role represents a unique opportunity for a laboratory or mechanical engineer to experience the best of both worlds: Project engineering, hands-on mechanical design work coupled with practical laboratory-based procedures, processes and experiments.
We are looking for someone with project engineering and leadership skills to drive initiatives from design through implementation. The ideal candidate will combine technical expertise with the ability to lead projects, plan, coordinate teams, and ensure successful delivery from concept through execution for innovative solutions in a fast-paced lab environment. You therefore need to bring a balance of hands-on engineering knowledge and project management skills to ensure timely, high-quality outcomes.
In this role, you’ll tackle both well-established mechanical measurements such as Modal Analysis, Vibration Analysis, Structural Health Monitoring, Material Testing, and advanced techniques as Resonant Ultrasound Spectroscopy and Transient Grating Spectroscopy under challenging conditions like vacuum or radiation. You'll be the driving force behind leading engineering projects, designing, analysing, and troubleshooting cutting-edge mechanical systems, transforming concepts into fully functional prototypes and engineering solutions.
This role is also about leadership and ownership. You’ll be responsible for creating and validating 3D models and 2D drawings in CAD, generating technical reports, and delivering robust solutions that align with ESS-wide project requirements, including projects for superconducting applications. From conceptual design to production oversight in both underground labs and surface assembly halls, you’ll actively participate in leading teams, system assembly, measurements, manufacturing follow-ups, and hands-on testing. Collaborating with experts across disciplines, you’ll ensure every design is both groundbreaking and practical.
Your creativity, precision, and problem-solving mindset will be key for completing tasks such as reviewing tolerances, testing manufacturability, and refining assembly processes. With access to state-of-the-art tools like CATIA and our in-house ESS CAD management system, you’ll lead design evolution, provide technical support, and deliver first-rate solutions.
This is a full-time, permanent position which is based primarily “on-site” at the brand-new ESS campus in Lund, Sweden.
About you:
First and foremost, we need someone who is suitably qualified and experienced. Ideally, you will have appropriate academic and technical qualifications, such as a Higher Technical or University engineering degree in mechanical engineering or another equivalent engineering degree. However, any relevant experience in a similar leadership role is critical as qualification that you hold.
A strong background in project engineering for lab-based initiatives, coupled with experience in leading work-packages and teams, will be considered key assets for this role. A minimum of 5 years of professional experience in mechanical engineering or a related field is required, with proven leadership in engineering projects regarded as a critical competence for this position.
In this unique and interesting role, we need someone with a good level of competency with 3D & 2D design using CAD and CATIA. The ideal candidate will understand both Geometric Dimensioning and Tolerancing and its application to production, as well as the rules and norms for mechanical manufacturing in accordance with applicable and interfacing electrical regulations.
Prior experience of conducting Non-Destructive and Destructive Testing and laboratory measurements would be an advantage.
A key element of this role will be the publishing of experimental results and scientific papers - so an established academic publication history is desirable. We attach great importance to personality and attitude, so we're looking for a real team player: Someone who is sociable, has excellent communication skills, who likes to collaborate with different people and who is committed to helping this amazing project to realise its full potential.
The working language of ESS is English but the ability to speak Swedish or another European language would be an advantage.
To apply:
A career at ESS gives you the opportunity to contribute to the future discoveries within neutron science at a stunning, brand-new workplace filled with innovative minds and brilliant people from across the globe. We offer market competitive, individualised compensation which is differentiated according to role, responsibilities, individual skills, abilities and achievements as well as monthly pension contributions on top of your salary.
If you see yourself in what we’re looking for, please provide your CV and motivation letter in English by clicking on “apply” and following the instructions.
Please be aware that we can only accept direct applications made via the ESS website. Submit your application as soon as you can and quote the job reference number ESD-79562 in your application.
This role requires additional background screening processes and health and safety checks, which will be performed during the recruitment process.
For further information regarding the position, please contact Talent Acquisition Specialist Daniel Nordin Baker on mailto:[email protected] or hiring manager Nick Gazis via mailto:[email protected]
For trade union information, please contact Unionen representative Nerusha Naicker on mailto:[email protected] or SACO/Swedish Association of Graduate Engineers representative Marc Kickulies at mailto:[email protected] Visa mindre

Summer worker – IT Infrastructure

The European Spallation Source (ESS) in Lund, Sweden is a partnership of 13 European countries with the mission to design, construct and operate the world's most powerful neutron source. Working with us means being part of a challenging and exciting work environment, at a stunning, brand new workplace filled with innovative minds and brilliant people from across the globe.   About the position We are now looking to appoint a summer worker for the IT Inf... Visa mer
The European Spallation Source (ESS) in Lund, Sweden is a partnership of 13 European countries with the mission to design, construct and operate the world's most powerful neutron source.

Working with us means being part of a challenging and exciting work environment, at a stunning, brand new workplace filled with innovative minds and brilliant people from across the globe.

 

About the position
We are now looking to appoint a summer worker for the IT Infrastructure & Operations group in the IT division.

The IT Infrastructure & Operations group is responsible for managing and maintaining ESS data centres, private cloud infrastructure, servers and computing resources, storage and backup systems, network management, internet connectivity, wireless and mobile networks, identity and access management, and IT security.

As an IT Infrastructure summer worker, your main tasks will be to support the Network team with supervised Wi-Fi surveys across agreed ESS office, instrument and campus areas and to help collect, organise and review the resulting survey information.

You will also assist with updating documentation of network racks and associated infrastructure in office rooms, instrument areas, server rooms and communications rooms, as well as maintaining inventory records for reserve equipment, patch cables, fibre bundles, transceivers, switches, serial numbers and asset tags.

In addition, you will use NetBox, approved scripts and related documentation tools to record physical network infrastructure accurately, carry out quality checks on the collected information and report documentation gaps, stock discrepancies and other findings to the responsible mentor or line manager.

About you
A suitable background for this position would be:


• Enrolled at university in Computer Science, Engineering, Electronics, Telecommunications, Information Technology or a related field
• An interest in networking, IT infrastructure, hardware inventory management or technical documentation
• Familiarity with Linux, spreadsheets or databases, and exposure to NetBox or basic scripting would be beneficial
• Good written and oral communication skills in English
• Minimum age 18 years

We believe that you enjoy hands-on technical work and collaborating with a variety of people in an international environment. You are structured, attentive to detail and comfortable following safety and access rules while working on-site. We also value initiative, curiosity and a practical approach to solving problems and documenting what you find.

Duration and location
This is a summer work position of 2 months/8 weeks. Planned start date is June, 2026 or per agreement.

Your workplace is on-site at ESS in Lund, Sweden.

How to apply
Please provide your CV in English by clicking on “apply” and following the instructions. Please note that we only accept applications via the ESS website. The last day to apply is 2026-04-12.

Certain roles at ESS require health and safety and/or security checks, which may be carried out during the recruitment process.

Contact persons
For further information regarding the position, please contact Recruiting Manager Remy Mudingay at [email protected]

For trade union information, please contact Unionen representative Nerusha Naicker at [email protected] or SACO/Swedish Association of Graduate Engineers representative Marc Kickulies at [email protected]

We look forward to receiving your application! Visa mindre

Summer worker – Documentation and Process Support

The European Spallation Source (ESS) in Lund, Sweden is a partnership of 13 European countries with the mission to design, construct and operate the world's most powerful neutron source. Working with us means being part of a challenging and exciting work environment, at a stunning, brand new workplace filled with innovative minds and brilliant people from across the globe.   About the position We are now looking to appoint a summer worker for the IT Inf... Visa mer
The European Spallation Source (ESS) in Lund, Sweden is a partnership of 13 European countries with the mission to design, construct and operate the world's most powerful neutron source.

Working with us means being part of a challenging and exciting work environment, at a stunning, brand new workplace filled with innovative minds and brilliant people from across the globe.

 

About the position
We are now looking to appoint a summer worker for the IT Infrastructure & Operations group in the IT division.

The IT Infrastructure & Operations group is responsible for managing and maintaining ESS data centres, private cloud infrastructure, servers and computing resources, storage and backup systems, network management, internet connectivity, wireless and mobile networks, identity and access management, and IT security.

As a Documentation and Process Support summer worker, your main tasks will be to assist with the review, clean-up and update of internal documentation across agreed ESS platforms, including the intranet, Confluence, CHESS and JIRA.

You will help update onboarding documentation and related guidance material, review documentation structure, wording, formatting, links, ownership information and metadata, and identify duplicate, outdated, incomplete or inconsistent content for correction.

You will also assist in updating CHESS documentation to reflect organisational and process changes, support the review of JIRA tasks and related records in line with agreed instructions, and maintain clear records of changes made, outstanding issues and recommendations for follow-up by permanent staff.

About you
A suitable background for this position would be:


• Enrolled at university in Information Science, Communications, Business Administration, Information Technology or a related field
• Experience editing or structuring documentation in Confluence, SharePoint, wiki platforms or similar tools would be beneficial
• A strong eye for detail and an interest in documentation quality, process support and content organisation
• Good written and oral communication skills in English
• Minimum age 18 years

We believe that you enjoy creating order, improving clarity and collaborating with a variety of people in an international environment. You are structured, careful and comfortable working through detailed content methodically. We also value initiative, good judgement and the ability to keep track of changes, open questions and follow-up items.

Duration and location
This is a summer work position of 12 weeks. Planned start date is June, 2026 or per agreement.

Your workplace is on-site at ESS in Lund, Sweden.

 

How to apply
Please provide your CV in English by clicking on “apply” and following the instructions. Please note that we only accept applications via the ESS website. The last day to apply is 2026-04-12. 

Certain roles at ESS require health and safety and/or security checks, which may be carried out during the recruitment process.

Contact persons
For further information regarding the position, please contact Recruiting Manager Remy Mudingay at [email protected]

For trade union information, please contact Unionen representative Nerusha Naicker at [email protected] or SACO/Swedish Association of Graduate Engineers representative Marc Kickulies at [email protected]

 

We look forward to receiving your application! Visa mindre

Summer Worker - Identity and Access Management

The European Spallation Source (ESS) in Lund, Sweden is a partnership of 13 European countries with the mission to design, construct and operate the world's most powerful neutron source. Working with us means being part of a challenging and exciting work environment, at a stunning, brand new workplace filled with innovative minds and brilliant people from across the globe.   About the position We are now looking to appoint a summer worker for the IT Inf... Visa mer
The European Spallation Source (ESS) in Lund, Sweden is a partnership of 13 European countries with the mission to design, construct and operate the world's most powerful neutron source.

Working with us means being part of a challenging and exciting work environment, at a stunning, brand new workplace filled with innovative minds and brilliant people from across the globe.

 

About the position
We are now looking to appoint a summer worker for the IT Infrastructure & Operations group in the IT division.

The IT Infrastructure & Operations group is responsible for managing and maintaining ESS data centres, private cloud infrastructure, servers and computing resources, storage and backup systems, network management, internet connectivity, wireless and mobile networks, identity and access management, and IT security.

As an Identity and Access Management (IAM) summer worker, your main tasks will be to assist with regression testing of key user scenarios in the One Identity Web Portal, with a particular focus on joiner and registration workflows, and to carry out exploratory testing of the Web Portal and IT Shop from an end-user perspective.

You will help review the visibility and presentation of information in the Web Portal, document testing results and recommendations in a structured manner, and support the development and update of end-user knowledge base material such as step-by-step guides, screenshots, tips and articles.

You will also assist with service desk support activities related to the access object lifecycle, help collect and organise information for onboarding new access objects and services, and support supervised improvements to IAM-related workflows, user guidance and service request processes.

About you
A suitable background for this position would be:


• Enrolled at university in Computer Science, Information Technology, Engineering or a related field
• An interest in identity and access management, usability testing, service processes or end-user support
• Experience with web applications, documentation, testing or basic front-end technologies would be beneficial
• Good written and oral communication skills in English
• Minimum age 18 years

We believe that you enjoy analysing how services work from an end-user perspective and collaborating with a variety of people in an international environment. You are observant, methodical and able to describe findings clearly in writing. We also value initiative, sound judgement and a willingness to ask questions when dealing with business-critical access processes.

Duration and location
This is a summer work position of 6 weeks. Planned start date is June, 2026 or per agreement.

Your workplace is on-site at ESS in Lund, Sweden.

 

How to apply
Please provide your CV in English by clicking on “apply” and following the instructions. Please note that we only accept applications via the ESS website. The last day to apply is  2026-04-12.

Certain roles at ESS require health and safety and/or security checks, which may be carried out during the recruitment process.

Contact persons
For further information regarding the position, please contact Recruiting Manager Remy Mudingay at [email protected]

For trade union information, please contact Unionen representative Nerusha Naicker at [email protected] or SACO/Swedish Association of Graduate Engineers representative Marc Kickulies at [email protected].

 

We look forward to receiving your application! Visa mindre

Summer worker – Technical Documentation & Information Management

The European Spallation Source (ESS) in Lund, Sweden is a partnership of 13 European countries with the mission to design, construct and operate the world’s most powerful neutron source. Working with us means being part of a challenging and exciting work environment, at a stunning, brand-new workplace filled with innovative minds and brilliant people from across the globe. About the position We are now looking to appoint a summer worker for the Technical... Visa mer
The European Spallation Source (ESS) in Lund, Sweden is a partnership of 13 European countries with the mission to design, construct and operate the world’s most powerful neutron source.

Working with us means being part of a challenging and exciting work environment, at a stunning, brand-new workplace filled with innovative minds and brilliant people from across the globe.

About the position
We are now looking to appoint a summer worker for the Technical Content Management (TCM) function in the Engineering Management Group.

The Technical Content Management function is responsible for supporting the organisation in how to manage technical information for the entire ESS project mainly focusing our document management system CHESS and to validate the information that CHESS is responsible for in EAM.

As a Technical Documentation & Information Management Intern your main tasks will include: 


• Support to make the process of getting data from ePlan structured and ready for import into CHESS.
• Structure part library and part manuals in CHESS and to align naming of documentation.
• Relocate and structure existing documentation from Installation Binders in Confluence (Atlassian) to CHESS, ensuring correct classification and accessibility.
• Collaborate with TCM team members to understand information needs and ensure that the content is user-friendly and fit for purpose.

About you
A suitable background for this position would be:


• Currently enrolled in a relevant degree program (e.g. Engineering or similar).
• Familiarity with Confluence Atlassian is a plus (but not required).
• Basic knowledge of content management systems and document structures.
• Basic knowledge about technical documentation and ability to understand drawings.
• Very good knowledge in Excel and preferably good knowledge in scripting language (preferably python).


• Good written and oral communication skills in English.
• Minimum age 18 years.

We believe that you enjoy communicating and collaborating with a variety of people in an international environment. You are good at taking initiative and not afraid to ask questions.

Duration and location
This is a summer work position for 7-8 weeks. Planned start date is 8 June 2026 or per agreement.
Your workplace is on-site at ESS in Lund, Sweden. 

How to apply
Please provide your CV in English by clicking on “apply” and following the instructions. Please note that we only accept applications via the ESS website. The last day to apply is 15 April 2026.

Certain roles at ESS require health and safety and/or security checks, which may be carried out during the recruitment process.  

Contact persons
For further information regarding the position, please contact Recruiting Managers: Magnus Täcklind at [email protected] and Joakim Meyer at [email protected]

For trade union information, please contact Unionen representative Nerusha Naicker at [email protected] or SACO/Swedish Association of Graduate Engineers representative Marc Kickulies at [email protected]  

We look forward to receiving your application! Visa mindre

Summer worker - CAD Design in the Spectroscopy Division

The European Spallation Source (ESS) in Lund, Sweden is a partnership of 13 European countries with the mission to design, construct and operate the world’s most powerful neutron source.  Working with us means being part of a challenging and exciting work environment, at a stunning, brand-new workplace filled with innovative minds and brilliant people from across the globe. About the position We are now looking to appoint a summer worker in the Spectros... Visa mer
The European Spallation Source (ESS) in Lund, Sweden is a partnership of 13 European countries with the mission to design, construct and operate the world’s most powerful neutron source. 

Working with us means being part of a challenging and exciting work environment, at a stunning, brand-new workplace filled with innovative minds and brilliant people from across the globe.

About the position

We are now looking to appoint a summer worker in the Spectroscopy Division

The Spectroscopy group is responsible for 5 instruments that probe material dynamics using inelastic and quasi-elastic neutron scattering. A wide variety of behaviours can be probed to determine material functionalities ranging from diffusional or hopping motions of atoms, the rotational modes of molecules, sound modes and molecular vibrations, recoil in quantum fluids, magnetic and quantum excitations or even electronic transitions. The 5 instruments of the spectroscopy division are MIRACLES, a backscattering spectrometer, CSPEC, a cold flight spectrometer, BIFROST, the extreme environment spectrometer, T-REX, a bispectral time of flight spectrometer and VESPA, a vibrational spectrometer. This role will support BIFROST.

As a mechanical designer summer worker, your task will be to start the design of a prototype support tool helping to move and manipulate the detector modules of the instrument.

We believe that you enjoy communicating and collaborating with a variety of people in an international environment. You are good at taking initiative and not afraid to ask questions.

A suitable background for this position would be:


• Studying for a degree in Civil Engineering/ Mechanical Engineering, Engineering Physics or equivalent. Year 2 and above.
• Able to perform CAD design.
• Good written and oral communication skills in English.
• Minimum age 18 years.

We believe that you enjoy communicating and collaborating with a variety of people in an international environment. You are good at taking initiative and not afraid to ask questions.

Duration and location

This is a summer work position of 3 months.  

Planned start date is 22 June 2026 or per agreement.

Your workplace is on-site at ESS in Lund, Sweden. 

How to apply

Please provide your CV by clicking on “apply” and following the instructions. Please note that we only accept applications via the ESS website. The last day to apply is 14th April 2026.

Certain roles at ESS require health and safety and/or security checks, which may be carried out during the recruitment process.  

For further information regarding the position, please contact Recruiting Manager Pascale Deen at [email protected]  

For trade union information, please contact Unionen representative Nerusha Naicker at [email protected] or SACO/Swedish Association of Graduate Engineers representative Marc Kickulies at [email protected]  

We look forward to receiving your application! Visa mindre

Payroll Specialist

As our next Payroll Specialist at ESS, you’ll play a central role in making sure our people are paid correctly and on time. Working with a friendly and experienced team, you’ll handle monthly payroll for Sweden and Denmark and support colleagues with questions about salary, time reporting, and leave. You’ll also help keep our HR systems and data accurate, while working closely with our external payroll partner.   The European Spallation Source is one of t... Visa mer
As our next Payroll Specialist at ESS, you’ll play a central role in making sure our people are paid correctly and on time. Working with a friendly and experienced team, you’ll handle monthly payroll for Sweden and Denmark and support colleagues with questions about salary, time reporting, and leave. You’ll also help keep our HR systems and data accurate, while working closely with our external payroll partner.  

The European Spallation Source is one of the largest science and technology infrastructure projects being built today. The project includes the most powerful linear proton accelerator ever built, a five-tonne, helium-cooled tungsten target wheel, 15 state-of-the-art neutron instruments, a suite of laboratories, and a super-computing data management and software development centre. In the context of its history and future as a scientific organisation, however, it is more than the sum of its parts. It is a brand-new Big Science organisation, built from the ground up. 

Come and shape the future of Science with us! 

About the role: 

ESS is at an exciting turning point. It is in transition from being a construction site, to being an operating facility. To help us realise our goal of being the most powerful neutron source in the world, we are now looking for a Payroll Administrator to join our HR admin team. 

As a HR Payroll Administrator, you will provide advice to and support the organisation regarding HR and salary-related questions from managers, employees, consultants and partners. Together with our experienced team of 3 you are responsible for all monthly reoccurring salary administration and payroll handling for Sweden and Denmark and you manage communication and collaboration to ESS salary outsourcing provider. You provide support to and advise the organisation regarding time reporting, e.g. non-standard working hours, vacation, absence, etc. and you are responsible for entering and maintaining employee information in relevant system. You will generate reports, have mutual responses for general questions in our ticket-system, the HR administration and the salary mailbox. 

You will be part of the project team to lead and drive the implementation of payroll and scheduling processes as part of Work Force Management and payroll system project. You will ensure effective implementations and updates of procedures, guidelines and rules within responsibilities. 

This is a full-time/permanent position based at the ESS Campus in Lund, Sweden.  

About you: 

Requirements: 


• Education within Payroll (or Finance) with around 5 years of experience in payroll and administration, and an understanding of the full payroll cycle. 
• Within your payroll experience, you have managed different payroll and WFM systems; it´s to you advantage if you have been working with HR+, Hogia, Agda, Unit4 or any other comparable system within the Swedish payroll area. We need you to have a good understanding of Microsoft Office, specially within Excel. 
• Fluent in English in both writing and speaking.  

To be successful in this position, we believe you are both well-structured, into details and rigid in areas where needed, but also flexible to meet high expectations of service from the organization and team. You enjoy both sides of the job and understand why they are important soft skills in this role. You need to have a drive in your day-to-day work and understand the importance of deadlines and uneven workload on a monthly basis due to deadlines.  

You will be part of a small payroll and administration team where collaboration and teamwork are key. In the coming years, we will drive change with a strong focus on digitalization, standardization, and visualisation.  

A career at ESS gives you the opportunity to contribute to the future discoveries within neutron science at a stunning, brand-new workplace filled with innovative minds and brilliant people from across the globe. We offer competitive, individualised compensation which is differentiated according to role, responsibilities, individual skills, abilities and achievements as well as monthly pension contributions on top of your salary. You can learn more about the exciting benefits of working at ESS on our careers page. 

To apply: 

If you see yourself in what we’re looking for, please provide your CV and motivation letter in English by clicking on “apply” and following the instructions. Please be aware that we can only accept direct applications made via the ESS website. Submit your application as soon as you can, the last day to apply is on the 20 of April 2026. 

This role requires additional background screening processes and health and safety checks, which will be performed during the recruitment and onboarding process. 

For further information regarding the recruitment process, please contact Talent Acquisition Specialist Sofie Berg on [email protected]  

For information about the position, please contact HR Operations Group leader Kristina Bacos on [email protected]  

For trade union information, please contact Unionen representative Nerusha Naicker on [email protected] or SACO/Swedish Association of Graduate Engineers representative Marc Kickulies at [email protected] Visa mindre

Summer worker - Chemistry Project in the Spectroscopy Division

Ansök    Mar 27    European Spallation Source Eric    Kemist
The European Spallation Source (ESS) in Lund, Sweden is a partnership of 13 European countries with the mission to design, construct and operate the world’s most powerful neutron source. Working with us means being part of a challenging and exciting work environment, at a stunning, brand new workplace filled with innovative minds and brilliant people from across the globe.  About the position We are now looking to appoint a summer worker in the Spectros... Visa mer
The European Spallation Source (ESS) in Lund, Sweden is a partnership of 13 European countries with the mission to design, construct and operate the world’s most powerful neutron source.

Working with us means being part of a challenging and exciting work environment, at a stunning, brand new workplace filled with innovative minds and brilliant people from across the globe. 

About the position

We are now looking to appoint a summer worker in the Spectroscopy Division

The Spectroscopy group is responsible for 5 instruments that probe material dynamics using inelastic and quasi-elastic neutron scattering. A wide variety of behaviours can be probed to determine material functionalities ranging from diffusional or hopping motions of atoms, the rotational modes of molecules, sound modes and molecular vibrations, recoil in quantum fluids, magnetic and quantum excitations or even electronic transitions. The 5 instruments of the spectroscopy division are MIRACLES, a backscattering spectrometer, CSPEC, a cold flight spectrometer, BIFROST, the extreme environment spectrometer, T-REX, a bispectral time of flight spectrometer and VESPA, a vibrational spectrometer. This role will support the scientific developments on VESPA.

As a chemistry summer worker you will be involved in the following project:

Chemistry problem:

Ammonia borane (NH3BH3) is a material for chemical hydrogen storage, i.e. the material can be recharged after hydrogen release. There are some issues with the recharging  and some attempts to optimize the system by even “charging” it more to make NH4BH4. Since the charging/release causes chemical changes in the structure, it is  important to understand what is happening in the processes. Our collaborators want to perform high pressure neutron diffraction experiments to understand the changes in structure when going from NH3BH3 with high pressure of H2 to NH4BH4. Since natural boron (B) adsorbs neutrons quite strongly and hydrogen causes a background for neutron diffraction, it is necessary to make B11-isotope exchanged and deuterated ND311BD3. This is a reaction that involves four steps to go from boric 11B(OH)3 to Na(11B)D4 to ND3(11B)D3. The aim is to first try the synthesis using the natural isotopes (cheaper!) before making 500mg of the isotope enriched compound. I have done the synthesis before, so I know it works. However, we need to check again and optimize as much as we can.

This is a typical compound that will be used also on the vibrational spectrometer VESPA (https://ess.eu/instruments/vespa). While the deuteration is usually not necessary as H is better visible, 11B is needed.

This work involves handling hazardous chemicals (in a safe surrounding) as well as using several lab techniques, e.g. reflux, distillation, filtration, purification, recrystallization, working in inert atmosphere, as well as analysis techniques to assure the purity of the product (FT-IR, XRD). The time spend will be mostly in the laboratory but also writing the experimental description, calculating amounts and yields and evaluation FT-IR spectra and X-ray diffraction patterns.

About you

A suitable background for this position would be:


• Upper Secondary Education (gymnasiet): Naturvetenskapsprogram (NA) with an interest in chemistry.
• Good written and oral communication skills in English
• Minimum age 18 years.

We believe that you enjoy communicating and collaborating with a variety of people in an international environment. You are good at taking initiative and not afraid to ask questions.

Duration and location

This is a summer work position of 3 months.  

Planned start date is 22 June 2026 or per agreement.

Your workplace is on-site at ESS in Lund, Sweden. 

How to apply

Please provide your CV by clicking on “apply” and following the instructions. Please note that we only accept applications via the ESS website. The last day to apply is 14th April 2026.

Certain roles at ESS require health and safety and/or security checks, which may be carried out during the recruitment process.  

For further information regarding the position, please contact Recruiting Manager Pascale Deen at [email protected]  

For trade union information, please contact Unionen representative Nerusha Naicker at [email protected] or SACO/Swedish Association of Graduate Engineers representative Marc Kickulies at [email protected]  

We look forward to receiving your application! Visa mindre

Kontorsvaktmästare

European Spallation Source i Lund ska bli världens mest kraftfulla mikroskop. Vi är en av de mest spännande, innovativa och banbrytande "Big Science"- projekten under uppbyggnad idag. Forskning med neutroner ligger bakom några av de viktigaste materialen och innovationerna som förbättrar vår vardag, vår hälsa och vår miljö – och ESS kommer att vara det mest kraftfulla neutronmikroskopet när det står klart i 2027.  Andra har byggt teleskop som gör att vi k... Visa mer
European Spallation Source i Lund ska bli världens mest kraftfulla mikroskop. Vi är en av de mest spännande, innovativa och banbrytande "Big Science"- projekten under uppbyggnad idag. Forskning med neutroner ligger bakom några av de viktigaste materialen och innovationerna som förbättrar vår vardag, vår hälsa och vår miljö – och ESS kommer att vara det mest kraftfulla neutronmikroskopet när det står klart i 2027. 

Andra har byggt teleskop som gör att vi kan titta in i rymdens djupaste områden, och nu bygger vi ett mikroskop som är så kraftfullt att vi faktiskt kan studera de minsta objekten – atomer – i minsta detalj. 

Kom och bygg vetenskapens framtid med oss! 

Om rollen: 

ESS söker nu en kontorsvaktmästare till gruppen Office Support Group. 

Som kontorsvaktmästare på ESS kommer du att vara en del av en mindre men otroligt viktig grupp på en handfull personer, som jobbar tätt ihop. Gruppen är en service och supportfunktion, som värnar om att se till att allt fungerar så smidigt som möjligt för alla som jobbar på ESS kontor. Förväntningarna på vår service är höga, och för oss är det både viktigt och roligt att möta och överträffa dessa. 

Dina huvudsakliga arbetsuppgifter är att: 


• Planera och beställa kontorsmöbler 


• Stödja kort? och långsiktig kontorsplanering 


• Uppdatera och underhålla kalendern för kontorsstöd 


• Fylla på och underhålla pentryn och skrivarrum på hela anläggningen 


• Hantera interna kontorsflyttar 


• Fungera som larmkontakt (via telefon under kontorstid) 


• Genomföra veckovisa och löpande kontorsinspektioner 


• Stödja incidentrapportering och kontorsreparationer i samordning med SBM 


• Vidarebefordra och följa upp serviceärenden i samordning med SBM 


• Ha ansvar för samt dagligen underhålla och ladda ESS fordon 


• Dagligen säkerställa att huvudkontoret återställs fysiskt och håller en genomgående hög standard 


• Första linje support i ärendehanteringssystemet (Jira) 


• Vara tekniskt ansvarig för och ge operativt stöd i auditoriet 

 

Tjänsten är på heltid, tillsvidare med 6 månaders provanställning, med placering på ESS i Lund. 

 

Om dig: 

Du som söker har förmågan att arbeta självständigt och tar ansvar för ditt arbete, med en tydlig stolthet i det du levererar. Samarbete är en självklar del av ditt arbetssätt, och du bidrar aktivt till lagarbete genom att stötta kollegor och dela med dig av din kunskap. Du är nyfiken, tekniskt intresserad och har lätt för att sätta dig in i nya frågor för att hitta praktiska lösningar. Dessutom har du en god förståelse för logistiska flöden och kan planera och strukturera ditt dagliga arbete på ett effektivt sätt. 

I den här rollen är det viktigt att du är en lagspelare med en positiv och serviceinriktad inställning. Du kan arbeta självständigt, tar egna initiativ och tycker om att arbeta strukturerat. Att ge bra service är en självklarhet för dig, och du har lätt för att kommunicera och samarbeta med kollegor, leverantörer och andra kontakter. 

Du trivs med ett varierande arbete och är praktiskt lagd. Du kan utföra enklare reparationer och montering, och ser lösningar där andra ser problem. 

Du är självgående och bra på att planera ditt arbete, men kan också vara flexibel när förutsättningarna ändras. Att hantera flera uppgifter samtidigt och prioritera efter behov är något du känner dig bekväm med. 

Krav: 


• B-körkort (meriterande med BE) 


• Relevant utbildning eller erfarenhet som teatertekniker/scentekniker eller vaktmästare där du arbetat med ljud och ljus på tillräckligt avancerad nivå för att förstå tekniken bakom. 


• Kan kommunicera på både svenska och engelska på hög nivå (i både tal och skrift). 


• God datorvana och förmåga att arbeta självständigt i vanliga program som Word, Excel, Outlook och Zoom 

Vi lägger stor vikt vid personlig lämplighet. Vi värdesätter ett professionellt förhållningssätt, god samarbetsförmåga samt förmågan att hantera känslig information med hög diskretion. Det är en fördel om du har tidigare erfarenhet av att arbeta i en internationell miljö. 

Tjänsten kräver att du har goda fysiska förutsättningar för kunna utföra vissa arbetsuppgifter, till exempel att kunna bära och lyfta vid behov. 

Att ansöka: 

Ansök med ditt CV på svenska genom att klicka på "ansök" och följ instruktionerna på vår hemsida. Notera att vi ENDAST tar emot ansökningar via vår hemsida, vi tar EJ EMOT ansökningar via mail. Sista ansökningsdag är den 7 april. För att läsa mer om vår rekryteringsprocess gå till: https://ess.eu/page/hiring-process 

För vissa roller vid ESS krävs hälsokontroller och säkerhetskontroller, vilket kan komma att krävas i de avslutande delarna av rekryteringsprocessen. 

För ytterligare information om tjänsten, vänligen kontakta Linda Björk Group Leader Office Support, på [email protected] 

För ytterligare information om rekryteringsprocessen, vänligen kontakta Talent Aqcusition Specialist Sofie Berg, på [email protected] 

För facklig information, vänligen kontakta Unionen Nerusha Naicker [email protected] eller SACO/Swedish Association of Graduate Engineers / Marc Kickulies [email protected] 

Vi ser fram emot din ansökan! Visa mindre

ERP Application Engineer

The European Spallation Source is one of the largest science and technology infrastructure projects being built today. The project includes the most powerful linear proton accelerator ever built, a five-tonne, helium-cooled tungsten target wheel, 15 state-of-the-art neutron instruments, a suite of laboratories, and a super-computing data management and software development centre. In the context of its history and future as a scientific organisation, howev... Visa mer
The European Spallation Source is one of the largest science and technology infrastructure projects being built today. The project includes the most powerful linear proton accelerator ever built, a five-tonne, helium-cooled tungsten target wheel, 15 state-of-the-art neutron instruments, a suite of laboratories, and a super-computing data management and software development centre. In the context of its history and future as a scientific organisation, however, it is more than the sum of its parts. It is a brand-new Big Science organisation, built from the ground up. 

Come and shape the future of Science with us! 

About the role: 

ESS is at an exciting turning point. It is in transition from being a construction site, to being an operating facility. To help us realise our goal of being the most powerful neutron source in the world, we are now looking for an ERP Application Engineer to join our Digital Solution Group. 

As an ERP Application Engineer, you will be responsible for supporting, maintaining, and developing key applications that drive the efficiency of ESS operations. You will work closely?with your team, and?with stakeholders in procurement, finance, and HR to ensure seamless use of systems such as Unit4 ERP, Primavera P6 EPPM, Mercur Business Control, and CatalystOne HRM. You will also actively contribute to ongoing projects, including the implementation of the CatalystOne HRM suite, payroll solutions, and Workforce Management tools and ERP Cloud migration. 

In your day-to-day job you will: 


• Provide technical administration, configuration, and support for the Unit4 ERP system, Primavera P6 EPPM, Mercur Business Control and CatalystOne HRM platform. 
• Participate in the implementation of new Payroll and Workforce Management tools, ensuring successful integration into existing ESS systems.?These are using Medvind and HR+ from Visma. 
• Manage the architecture of the ERP landscape, e.g. system integrations and interfaces between ERP tools and other ESS systems.?
• Collaborate with your colleagues in procurement, finance, and HR to identify and implement system improvements.? 
• Diagnose and resolve application issues, ensuring operational continuity.? 
• Support the development and implementation of workflows, payroll solutions, reporting processes, and process automation.? 
• Liaise with external vendors and service providers as needed for application support and updates. 

This is a full-time/permanent position based at the ESS Campus in Lund, Sweden. 

About you: 

We believe you have a degree in computer science, information systems, or in another related field.?You also have proven experience working with ERP systems, preferably Unit4 ERP, Primavera, CatalystOne, and/or Mercur. If you are familiar with HR/payroll and workforce management systems that is a major advantage.? 

We expect you to have well balanced expertise with system configuration, troubleshooting, and workflows, expertise with Cloud methodologies and experience working with application testing in a systematic way. You have a good understanding of ERP and HRM system integrations within procurement, finance, or HR processes.?And if you have knowledge of database management, data migration, and reporting tools that is an advantage. 

As a person you have strong problem-solving skills and attention to detail, excellent communication abilities to liaise with both technical teams and business units.?You have organizational skills to contribute to large-scale implementation projects and the ability to work independently as well as collaborate in a team environment. 

A career at ESS gives you the opportunity to contribute to the future discoveries within neutron science at a stunning, brand-new workplace filled with innovative minds and brilliant people from across the globe. We offer market competitive, individualized compensation which is differentiated according to role, responsibilities, individual skills, abilities and achievements as well as monthly pension contributions on top of your salary. You can learn more about the exciting benefits of working at ESS on our?careers page. 

To apply: 

If you see yourself in what we’re looking for, please provide your CV and motivation letter in English by clicking on “apply” and following the instructions. Please be aware that we can only accept direct applications made via the ESS website. Submit your application as soon as you can, last day to apply is on the 19th of April 2026.  

This role requires additional background screening processes and health and safety checks, which will be performed during the recruitment?and onboarding process. 

For further information regarding the recruitment process, please contact Talent Acquisition Specialist Sofie Berg on [email protected]   

For information about the position, please contact recruiting manager Johan Olander on [email protected]  

For trade union information, please contact Unionen representative Nerusha Naicker [email protected]?or SACO/Swedish Association of Graduate Engineers representative Marc Kickulies [email protected] Visa mindre

Summer worker – Electrical Technician

The European Spallation Source (ESS) in Lund, Sweden is a partnership of 13 European countries with the mission to design, construct and operate the world’s most powerful neutron source. Working with us means being part of a challenging and exciting work environment, at a stunning, brand-new workplace filled with innovative minds and brilliant people from across the globe. About the position  We are now looking to appoint a summer worker for the Detecto... Visa mer
The European Spallation Source (ESS) in Lund, Sweden is a partnership of 13 European countries with the mission to design, construct and operate the world’s most powerful neutron source.

Working with us means being part of a challenging and exciting work environment, at a stunning, brand-new workplace filled with innovative minds and brilliant people from across the globe.

About the position 

We are now looking to appoint a summer worker for the Detector group in the NSS (Neutron Scattering System) division.

The Detector group is responsible for design, production, assembly, testing, installation, commission, reparation, and maintenance of the detectors and the peripheral systems. Now, the Detector group is expanding in its capacity to receive detector systems from ESS In-Kind partners as well as to produce ESS own detector systems for the delivery of ESS’ first 16 instruments.

As an Electrical Technician - summer worker your main tasks will be as followings:


• Produce, assemble, and test electronics for detector systems
• Support assembly and reparation work for detector systems

About you

A suitable background for this position would be:


• Completed the El- och energiprogrammet or currently enrolled in a post?secondary program in Electrical or Electronics Engineering (e.g., university or technical institute).
• Having practical experience in electrical or electronics work, such as soldering, cable manufacturing, or assembly of electrical/electronic components.
• Good written and oral communication skills in English
• Minimum age 18 years.

We believe that you enjoy communicating and collaborating with a variety of people in an international environment. You are good at taking initiative and not afraid to ask questions.

Duration and location

This is a summer work position of 3 months. 

Planned start date is June 1st, 2026 or per agreement.

Your workplace is on-site at ESS in Lund, Sweden. 

How to apply

Please provide your CV in English by clicking on “apply” and following the instructions. Please note that we only accept applications via the ESS website. The last day to apply is 12th of April, 2026.

Certain roles at ESS require health and safety and/or security checks, which may be carried out during the recruitment process.  

For further information regarding the position, please contact Recruiting Manager Chung-Chuan Lai at [email protected]

For trade union information, please contact Unionen representative Nerusha Naicker [email protected]?or SACO/Swedish Association of Graduate Engineers representative Marc Kickulies [email protected]?

We look forward to receiving your application! Visa mindre

Group Leader for Support Laboratories

The European Spallation Source (ESS) is one of the largest science and technology infrastructure projects being built today. Our goal is to become the brightest source of neutrons for science and technology and be operational by the end of this decade. A state of the art suite of neutron scattering instruments will be made available to address a wide range of scientific fields in fundamental and materials science. Powered by the world’s most advanced linea... Visa mer
The European Spallation Source (ESS) is one of the largest science and technology infrastructure projects being built today. Our goal is to become the brightest source of neutrons for science and technology and be operational by the end of this decade. A state of the art suite of neutron scattering instruments will be made available to address a wide range of scientific fields in fundamental and materials science. Powered by the world’s most advanced linear proton accelerator, ESS will enable cutting-edge research in materials science, energy, health, and the environment for decades to come.

Join us in shaping the future of science - from the ground up.

About the role

Within the Science Directorate of ESS, the Scientific Support Division provides the ESS neutron science progam with experimental support with sample environments, user laboratories, deuteration, and hall coordination in close collaboration with Instrument Divisions.

The Support Laboratory group at ESS is preparing to support all scientific users of the ESS instruments by providing on-site laboratories for general chemistry as well as specialised laboratories for soft matter/life sciences, materials characterisation and radioactive materials.

We are now seeking to appoint a Group Leader to manage the Support Laboratory Group to lead the development of an internationally competitive suite of laboratory support facilities. The Support laboratory group leader will report to the Head of Scientific Support, and will be responsible for managing all aspects of the Support Laboratory group’s operations to ensure efficiency and performance in accordance with ESS objectives and strategy for the neutron science programme. As the Support Laboratory Group leader you will occupy a key position in the Science Directorate ensuring successful user support and enabling the ESS neutron user programme.

Day-to-day, you will be expected to:


• Build-up, train and manage the Support Laboratory Group with an emphasis on teamwork, performance and safety;
• Oversee the completion of installations and preparation of laboratories for the start of the ESS neutron user programme in 2027;
• Develop and manage all user laboratory services for the ESS neutron users.
• Coordinate the development of internationally competitive user laboratory facilities in close collaboration with the instruments;
• Lead the group’s actions towards supporting scientific excellence and high quality of support laboratory services;
• Support the laboratory group and ESS user programme in own area of expertise;
• Promote good collaboration and communication with ESS instrument teams and technical services
• Act as chemical safety expert for the experiment safety review committee and instruments;
• Represent the group’s interests towards stakeholders, ESS management and technical services;
• Establish and maintain effective links with support laboratory groups at other large scale reseach infrastructures.

About you:

The ideal candidate is a confident, service-oriented laboratory manager with a natural talent for leading teams and developing user laboratory support for  world-class scientific research. You have a university education in chemistry to minimum MSc level, as well as significant hands-on work experience in chemistry laboratories for sample preparation, synthesis as well as a physical and analytical laboratory equipment. While you are definitely an active chemist yourself, you’re also a natural coordinator skilled at liaising with both internal stakeholders and external providers and proactive when it comes to identifying risks, solving problems, planning work, and responding to unexpected situations.

You are expected to have documented experience and deep understanding of:


• Managing/supervising scientific and technical staff working in laboratories;  Managing laboratory safety, access and training for local and visiting users;
• Organising and managing support laboratory services and maintenance as well as managing budgets;  Collaborating with a range of internal and external stakeholders in a multidisciplinary environment;
• Chemical safety management in a laboratory environment;
• International collaboration and networking.

Additional merits:


• Experience in leading or hands-on experience working in a user support laboratory at an operating international user facility;     
• Experience working in a neutron or X-ray research infrastructure;
• Experience with radiological safety and handling of activated materials;  Experience with biological safety management;
• This is a full-time, permanent position based at the ESS Campus in Lund, Sweden.

To apply:

A career at ESS gives you the opportunity to contribute to the future discoveries within neutron science at a stunning, brand-new workplace filled with innovative minds and brilliant people from across the globe. We offer market competitive, individualised compensation which is differentiated according to role, responsibilities, individual skills, abilities and achievements as well as monthly pension contributions on top of your salary.

If you see yourself in what we’re looking for, please provide your CV and motivation letter in English by clicking on “apply” and following the instructions. Please be aware that we can only accept direct applications made via the ESS website. Submit your application as soon as you can and quote the job reference number ESD-68022 in your application.

For further information regarding the position, please contact Recruitment Partner, Kathryn Quaak at [email protected] or Hiring Manager Hanna Wacklin-Knecht at [email protected]

For trade union information, please contact Unionen representative Mikael Johansson on [email protected] or SACO/Swedish Association of Graduate Engineers representative Marc Kickulies at [email protected]

We look forward to receiving your application! Visa mindre

Scientist for Radioactive Material Laboratory

The European Spallation Source (ESS) is one of the largest science and technology infrastructure projects being built today. Our goal is to become the brightest source of neutrons for science and technology and be operational by the end of this decade. A state of the art suite of neutron scattering instruments will be made available to address a wide range of scientific fields in fundamental and materials science. Powered by the world’s most advanced linea... Visa mer
The European Spallation Source (ESS) is one of the largest science and technology infrastructure projects being built today. Our goal is to become the brightest source of neutrons for science and technology and be operational by the end of this decade. A state of the art suite of neutron scattering instruments will be made available to address a wide range of scientific fields in fundamental and materials science. Powered by the world’s most advanced linear proton accelerator, ESS will enable cutting-edge research in materials science, energy, health, and the environment for decades to come.

Join us in shaping the future of science - from the ground up.

About the role
Within the Science Directorate, the Scientific Support Division provides the ESS neutron science program with experimental support including user laboratories, sample environments, deuteration, and hall coordination in close collaboration with Instrument Divisions.

The Support Laboratory group at ESS is preparing to support all scientific users of the ESS instruments by providing on-site laboratories for general chemistry as well as specialized laboratories for soft matter/life sciences, materials characterization and radioactive materials.

We are now seeking a Support Laboratory Scientist for the Radioactive Materials Laboratory (RML) to support the user program with facilities for the safe handling of activated samples and materials. In this role, you will be responsible for the user operations, safety and development of the RML facilities, and will work in close collaboration with other members of the Support Laboratory group.

Day-to-day, you will be expected to:


• Be responsible for the safety and operations of the RML and active sample storage room.
• Provide RML user services including operation of equipment, user assistance and methodological laboratory services.
• Carry out expert safety reviews for the Experiment Safety Review committee.
• Organize procurement, calibration, maintenance and repair of equipment and laboratory infrastructure in the RML.
• Collaborate with instrument teams, the Radioprotection group and Support Laboratory team to provide safe and effective experimental support to users with active samples.
• Collaborate with other research infrastructure to develop and follow and best practices for active material laboratories and active sample handling procedures.
• Participate in scientific projects and collaborations with the RML user community.
• Assist with installation/setting up/renewal of laboratories.

About you
The ideal candidate is a confident, service-oriented laboratory professional with excellent communication skills and a natural talent for organizing laboratory support, safety and user support. You have an MSc or PhD in chemistry or a chemical science and solid hands-on work experience in chemistry laboratories for sample preparation and analysis. You are experienced in chemical safety and accustomed to handling radioactive samples and materials. While you are a professional scientist, you’re also a natural organizer skilled at liaising with both internal stakeholders and external users or service providers, and proactive when it comes to identifying risks or opportunties, solving problems, planning workflows, and responding to unexpected situations. For you, like us, safety comes first.

You are expected to have documented experience of:


• Working in chemistry laboratories and handling of radioactive samples
• Analytical laboratory techniques and equipment
• Chemical and radiological safety in a laboratory environment
• Supervising scientists and technicians working in laboratories
• Organising and providing training for laboratory users
• Organising and planning laboratory workflows and maintenance of equipment

Additional merits that would constitute an advantage:


• Experience of working as a laboratory responsible
• Experience of working in a scientific user laboratory or research infrastructure
• Experience of working in a multidisciplinary international environment
• Experience of neutron scattering methods for materials research


This is a full-time, permanent position based at the ESS Campus in Lund, Sweden.

What can we offer??
Aside from the chance to?work at?truly unique?big science project, you can also expect:


• An opportunity to contribute to?the future?discoveries within neutron science.
• A stunning,?brand new?workplace filled with innovative minds and brilliant people from across the globe.?
• A challenging,?innovative?and stimulating work environment.?
• Market competitive?compensation that?is individual and differentiated according to?role, responsibilities, individual skills,?abilities?and achievements.?
• 30 days?of annual leave, as well as more than?10 days?of public holiday and company days off or days with limited working hours.?
• Monthly pension contributions on top of your salary.?
• Flexible working arrangements and a real work-life balance.?

If you see yourself in what?we’re?looking for, please provide your CV and motivation letter in English by clicking on “apply” and following the instructions. Please be aware that we can only accept direct applications made via the ESS website.?

The last day for receiving applications is?March 5th 2026?- but please submit?your application as soon as you can.??

This role requires additional background screening processes and health and safety checks, which will be performed during the recruitment and onboarding process.

For further information regarding the position, please contact Talent Acquisition Specialist Sofie Berg on [email protected] or Hiring Manager Hanna Wacklin-Knecht on [email protected]

For trade union information, please contact?Unionen?representative Nuno Elias [email protected]?or SACO/Swedish Association of Graduate Engineers representative [email protected]??

We look forward to receiving your application! Visa mindre

Mechanical Review Engineer

The European Spallation Source is one of the largest science and technology infrastructure projects being built today. The project includes the most powerful linear proton accelerator ever built, a 5ton, helium-cooled tungsten target wheel, 15 state-of-the-art neutron instruments, a suite of laboratories, and a super-computing data management and software development centre. In the context of its history and future as a scientific organisation, however, it... Visa mer
The European Spallation Source is one of the largest science and technology infrastructure projects being built today. The project includes the most powerful linear proton accelerator ever built, a 5ton, helium-cooled tungsten target wheel, 15 state-of-the-art neutron instruments, a suite of laboratories, and a super-computing data management and software development centre. In the context of its history and future as a scientific organisation, however, it is more than the sum of its parts. It is a brand-new Big Science organisation, built from the ground up. 

Come and shape the future of Science with us! 

About the role: 
ESS is at an exciting turning point. It is in transition from being a construction site, to being an operating facility. To help us realise our goal of being the most powerful neutron source in the world, we are now looking for a Mechanical Review Engineer to join our Mechanical Engineering, Technological Analysis (META) Group, part of the Design & Engineering (D&E) Division. 

This position is responsible for reviewing and assuring the quality of mechanical engineering design, machine designs and review documentation across complex technical projects. This includes leading the mechanical engineering contribution to design reviews and ensuring that dimensioning and tolerances on drawings, engineering specifications, and  requirements eliminate ambiguity, meet applicable standards and abide by best practices. 

The role involves predominantly reviewing 2D drawings, their dimensioning and tolerances and 3D CAD models, engineering specifications, requirements and manufacturing  design in accordance with ISO standardization. Assessing design feasibility, manufacturability, assembly realization and overall quality are key performance indicators for this position. You will also be asked to contribute to the development and application of consistent review methodologies and draft proposals for engineering processes. 

Working as part of a central design office and core mechanical engineering group, you will support the design, development, and lifecycle of mechanical components, produce clear engineering review documentation, and collaborate closely with other engineering disciplines. Strong organisational skills and the ability to manage priorities independently are essential to delivering high?quality results on schedule. 

This is a full-time/fixed-term position based at the ESS Campus in Lund, Sweden. 

About you: 
To be successful in this position we believe you have: 


• A degree in Mechanical Engineering or a closely related engineering discipline, or equivalent relevant experience  
• Proven experience in mechanical design and engineering review within complex technical or industrial projects  
• Strong competence in 2D and 3D CAD design and drawing review, including the application of international standards (e.g. ISO GPS tolerancing and/or GD&T)  
• Experience participating in or leading technical design reviews and assessing designs for feasibility and manufacturability  
• Ability to work effectively across engineering disciplines and communicate technical information clearly  
• Strong self?management skills, with the ability to prioritise work and deliver high?quality results within agreed timelines 

The role requires strong analytical and critical?thinking skills, with the ability to assess complex technical information and identify risks and opportunities for improvement. Clear and structured communication skills are essential to provide constructive feedback during design reviews and to collaborate effectively with stakeholders across disciplines. The successful candidate will demonstrate a collaborative and solution?oriented mindset, a high level of attention to detail, and a strong commitment to quality and standards of compliance. The ability to work independently, manage priorities, and deliver high?quality results in a dynamic project environment is essential. 

A career at ESS gives you the opportunity to contribute to the future discoveries within neutron science at a stunning, brand-new workplace filled with innovative minds and brilliant people from across the globe. We offer market competitive, individualised compensation which is differentiated according to role, responsibilities, individual skills, abilities and achievements as well as monthly pension contributions on top of your salary. You can learn more about the exciting benefits of working at ESS on our careers page. 

To apply: 
If you see yourself in what we’re looking for, please provide your CV and motivation letter in English by clicking on “apply” and following the instructions. Please be aware that we can only accept direct applications made via the ESS website. Submit your application as soon as you can, the last day to apply is the 6th of April 2026. 

This role requires additional background screening processes and health and safety checks, which will be performed during the recruitment and onboarding process. 

For further information regarding the recruitment process, please contact Talent Acquisition Specialist Sofie Berg on [email protected] 

For information about the position, please contact Nick Gazis on [email protected]  

For trade union information, please contact Unionen representative Nerusha Naicker on [email protected] or SACO/Swedish Association of Graduate Engineers representative Marc Kickulies at [email protected] Visa mindre

Postdoctoral Researcher – Intrinsically Disordered Proteins

The European Spallation Source (ESS) is a partnership organization of 13 European member countries located in the city of Lund, Sweden. The ESS is hiring motivated and inspiring people from across the globe to prepare for the operation of the world’s most powerful neutron source. We seek collaborative, talented people in a range of fields who are excited about playing a part in the future of science in Europe. ESS is looking for a Postdoctoral Researcher ... Visa mer
The European Spallation Source (ESS) is a partnership organization of 13 European member countries located in the city of Lund, Sweden. The ESS is hiring motivated and inspiring people from across the globe to prepare for the operation of the world’s most powerful neutron source. We seek collaborative, talented people in a range of fields who are excited about playing a part in the future of science in Europe.

ESS is looking for a Postdoctoral Researcher as part of the AMBER cofund project. This postdoctoral position will be based in the Large Scale Structures Division at the European Spallation Source (ESS) working with Dr. Andrew Jackson in collaboration with Prof. Marie Skepö at Lund University (Computational Chemistry).

The successful candidate will define and lead a project focused on intrinsically disordered proteins (IDPs) studied by small-angle neutron scattering. The work may explore self-assembling IDPs, both reversible and irreversible oligomer/aggregate formation, and should involve significant method development. A key component will be the development of advanced analysis strategies involving computational modelling (atomistic, coarse-grained, hybrid, or multiscale approaches) and machine learning approaches to uncover the factors driving IDP behaviour and function.

Description of the AMBER project context 

This post-doctoral position is part of the EU cofund research project AMBER, Advanced Multiscale Biological imaging using European Research infrastructures, will address scientific and sectoral gaps in biological imaging ranging from molecular, through cellular, to tissue, organ and organism levels of organization, and is coordinated by LINXS Institute of advanced Neutron and X-ray Science.

AMBER is funded by the EU Marie Sk?odowska-Curie (MSCA) COFUND scheme. Around 15 postdocs will be recruited in the fifth call 2026, with each fellowship lasting 36 months.

AMBER has six core partners: Lund University/MAX IV, Sweden, the European Spallation Source (ESS), Sweden, the European Molecular Biology Laboratory (EMBL), Institut Laue-Langevin (ILL), France, the International Institute of Molecular Mechanisms and Machines, (IMOL), Poland, and the Leicester Institute of Structural and Chemical Biology, United Kingdom.

Your work may include clinical and biomedical projects. It may also include technique development work aimed at combining imaging techniques and data analysis to provide a more integrated picture of life processes in the context of health and disease. To be a postdoc fellow at the AMBER programme you will get unprecedented medical, biological, and methodological capabilities, with a profound potential impact for Europe’s next generation of research and researchers. When you have completed the AMBER programme you will be extraordinarily well equipped to further your career in academia, at infrastructures, in the health and MedTech sectors, and beyond.

For more information about the total announced post-doctoral positions within in the AMBER co-fund project please visit https://www.euraxess.se/jobs/392999

The interviews will start in April/May 2026. For more information about AMBER, please visit: ambercofund.eu

Your role and responsibilities:


• Conduct scientific research and author scientific or technical publications in the area of intrinsically disordered protein structure and function, with a focus on computational methods of structural analysis applied to Small Angle Scattering data.
• Establish and maintain constructive contacts with universities, laboratories and other relevant actors
• Take part in peer review of scientific publications, grant proposals, research, and facilities
• Present scientific research at relevant conferences and workshops, and in seminars and lectures.

Required qualifications and experience:


• PhD in the physical or biological sciences obtained at most 8 years ago
• At least one original publication in a peer reviewed journal
• Knowledge and experience in molecular simulation methods as appropriate to the project proposal.
• Ability to work in a team with people of a variety of disciplines in an international collaboration.
• Excellent oral and written English skills
• Flexibility to travel.

Additional desirable qualifications and experience:


• Knowledge of small-angle neutron or x-ray scattering.
• Knowledge of protein structural analysis

Application requirements:


• A complete application package submitted through the AMBER portal (including CV and detailed research plan)
• Compliance with MSCA mobility rule – the researcher must not have resided in or carried out their main activity (work, studies, etc) in Sweden for more than twelve months in the three years immediately prior to the application deadline.
• In addition to the AMBER portal submission, the applicant shall supply the following in the ESS application portal:

• CV
• Research Plan
• Evidence of English proficiency
• Draft Individual Career Development Plan (ICDP).
• Two reference letters.
• Ethical questionnaire (HE ethics checklist + research ethics commitment)



Duration & Location

The position is a 3 year term-limited position based in Lund, Sweden.

Application & Contact

Please provide the required application documents in English by clicking on “apply” no later than the 2nd of March 2026.

By submitting your application for this position, you acknowledge and consent that your application and personal information provided may be shared with our collaboration partner, for the purposes of recruitment and evaluation. Your information will be processed in accordance with applicable legislation. You have the right to withdraw your consent at any time; however, this mean that we will not be able to proceed with your application.

For more information regarding the ESS recruitment process, please follow this link https://europeanspallationsource.se/ess-recruitment- process.

For further information regarding the position, please contact the Line Manager, Andrew Jackson, Head of the Large-Scale Structures Division, [email protected].

For further information regarding the recruitment process, please contact Recruitment Partner, Sofie Berg, [email protected].

For trade union information please contact Unionen / Conny Wendt at +46 72 179 24 63 or SACO / Swedish Association of Graduate Engineers/ Yngve Levinson at +46 72 179 21 65

We look forward to receiving your application! Visa mindre

Sample Environment Group Leader

The European Spallation Source (ESS) is one of the largest science and technology infrastructure projects being built today. Our goal is to become the brightest source of neutrons for science and technology and be operational by the end of this decade. A state of the art suite of neutron scattering instruments will be made available to address a wide range of scientific fields in fundamental and materials science. Powered by the world’s most advanced linea... Visa mer
The European Spallation Source (ESS) is one of the largest science and technology infrastructure projects being built today. Our goal is to become the brightest source of neutrons for science and technology and be operational by the end of this decade. A state of the art suite of neutron scattering instruments will be made available to address a wide range of scientific fields in fundamental and materials science. Powered by the world’s most advanced linear proton accelerator, ESS will enable cutting-edge research in materials science, energy, health, and the environment for decades to come.

Join us in shaping the future of science - from the ground up.

About the role

Within the Science Directorate, the Scientific Support Division provides the ESS neutron science program with experimental support including sample environments, user laboratories, deuteration, and hall coordination in close collaboration with the Instrument Divisions.

The Sample Environment group supports all sample environments that will be used on ESS instruments by providing systems for soft and hard condensed matter, life science and chemistry experiments. This includes equipment for applying magnetic/electric fields, controlling extreme temperature and pressure, regulation of humidity, surface tension, handling of gases and applying mechanical stress and loading to samples.

The ESS is seeking to appoint a Sample Environment group leader to manage the sample environment team and lead the development of an internationally competitive sample environment suite and operational service.

As the Sample Environment group leader you will occupy a key position in the science directorate, in which you will manage all aspects of the sample environment development and operations to support the ESS neutron user programme.

Day-to-day, you will be expected to:


• Build-up, train and manage the Sample Environment group with an emphasis on teamwork, performance and safety;
• Oversee the completion, installation and commissioning of ESS sample environments for the start of the user programme;
• Develop strategies for the technical evolution towards an internationally competitive sample environment suite and its optimum scientific use on the instruments;
• Lead the group’s actions towards supporting scientific excellence and high quality of sample environment services;
• Develop and manage the operational sample environment service at ESS, including on-call support;
• Promote good collaboration and communication with ESS instrument teams and technical services;
• Represent the group’s interests towards internal and external stakeholders;
• Establish and maintain effective links with sample environment groups at other large scale research infrastructures.

About you

Our ideal candidate is a confident, service-minded sample environment professional with a natural talent for leading teams and coordinating complex technical support for world-class scientific research. Whether you're managing people, projects, systems, or resources, you bring structure, clarity, and reliability to everything you do - with a focus on safety, efficiency, and user support.

You have an engineering or scientific university education or extensive work experience in sample environments, as well as significant own hands-on experience of sample environment development and operations at a research laboratory, including supporting scientists and users.

We expect you to have documented experience and deep understanding of:


• Picture Sample environment support for research use, including operations, user support, development, and design of new equipment;
• Supervising engineering and technical staff;
• Organising and coordinating sample environment services and workshops;
• Planning and scheduling operations, including on-call support;
• Managing projects to clear timelines and priorities;
• Collaborating proactively with a range of internal and external stakeholders;
• Working in a multidisciplinary and international environment;
• Managing sample environment and workshop safety, including hazardous materials.

Additional merits that would constitute an advantage, but are not a requirement:


• Experience leading a sample environment service at an operational user facility;
• Picture Hands-on experience working in a sample environment service;
• Experience and understanding of neutron scattering research;
• Picture Experience with international collaboration and networking;
• Attracting external funding to enhance core-activities.
• This is a full-time, permanent position based at the ESS Campus in Lund, Sweden.

What can we offer??

Aside from the chance to?work at?truly unique?big science project, you can also expect:?


• An opportunity to contribute to?the future?discoveries within neutron science.
• A stunning,?brand new?workplace filled with innovative minds and brilliant people from across the globe.?
• A challenging,?innovative?and stimulating work environment.?
• Market competitive?compensation that?is individual and differentiated according to?role, responsibilities, individual skills,?abilities?and achievements.?
• 30 days?of annual leave, as well as more than?10 days?of public holiday and company days off or days with limited working hours.?
• Monthly pension contributions on top of your salary.?
• Flexible working arrangements and a real work-life balance.?

If you see yourself in what?we’re?looking for, please provide your CV and motivation letter in English by clicking on “apply” and following the instructions. Please be aware that we can only accept direct applications made via the ESS website.?

The last day for receiving application is?February 27,?2026?- so?submit?your application as soon as you can.??

This role requires additional background screening processes and health and safety checks, which will be performed during the recruitment and onboarding process.

For further information regarding the position, please contact Talent Acquisition Specialist Sofie Berg on [email protected] or Hiring Manager Hanna Wacklin-Knecht on [email protected]

For trade union information, please contact?Unionen?representative Nuno Elias [email protected]?or SACO/Swedish Association of Graduate Engineers representative [email protected]??

We look forward to receiving your application! Visa mindre

Instrument Scientist for ESS Test beamline

The European Spallation Source is one of the largest science and technology infrastructure projects being built today. The project includes the most powerful linear proton accelerator ever built, a five-tonne, helium-cooled tungsten target wheel, 15 state-of-the-art neutron instruments, a suite of laboratories, and a supercomputing data management and software development centre. In the context of its history and future as a scientific organisation, howeve... Visa mer
The European Spallation Source is one of the largest science and technology infrastructure projects being built today. The project includes the most powerful linear proton accelerator ever built, a five-tonne, helium-cooled tungsten target wheel, 15 state-of-the-art neutron instruments, a suite of laboratories, and a supercomputing data management and software development centre. In the context of its history and future as a scientific organisation, however, it is more than the sum of its parts. It is a brand-new Big Science organisation and we are building it from the ground up.

Come and build the future of Science with us!

The ESS is at an exciting turning point. It is in transition from being a construction site, to being an operating facility. To help us realise our goal of being the most powerful neutron source in the world, we are now looking for an Instrument Scientist for the dedicated Test beamline (TBL).

About the role:

The instrument scientist will work closely with another Scientist and the Instrument Operations Engineer, forming the core instrument team.


• The selected candidate will participate in the final installation and testing of components and contribute to their commissioning with neutrons.
• Develop a diagnostic plan for ESS Operation via the utilization of TBL
• Develop and implement new experimental methods using the TBL, including (but not limited to) wavelength-resolved imaging, diffractive imaging, grating interferometry, prompt-gamma neutron activation analysis (PGNAA), and advanced sample environments, etc.
• Pursue an independent research program.
• Develop synergies with other neutron facilities and build links with universities.
• Flexibility to occasionally work outside normal office hours.
• Responsible attitude to personal safety and the safety of others
• Willingness to international travel

This is a full-time, 3 year fixed term position based at the ESS Campus in Lund, Sweden.

About you:

We will place great emphasis on personal suitability for the position and work environment. The evaluation will take into account, among other things, problem-solving and analytical skills, collaboration skills and initiative. A proactive approach and the ability to work both independently and as part of a team are important. The role is particularly suited for candidates with a strong interest in instrument commissioning, diagnostics, and method development at a new neutron source.

Essential qualifications and experience:


• PhD, within the subjects of physics, material science, engineering or chemistry
• Experience in programming (python, C++, ROOT or similar) for data analysis
• Ability to work collaboratively and individually
• Good interpersonal communication and presentation skills, and the ability to interact effectively with staff and users at all levels.

Desirable experience:


• Experience with position-sensitive and/or time-of-flight neutron detectors
• Experience with time-of-flight neutron techniques
• Experience with user operation at a large-scale neutron facility
• Experience in developing neutron instrumentation
• Working knowledge of one or more of the data analysis/visualisation packages used within ESS (python, Scipp etc.)

Experience of working in an international environment is preferred and excellent oral and written English skills are prerequisites. Our work environment is characterised by fast growth, a fast pace of work, and an international atmosphere with highly skilled personnel. You must therefore enjoy the diversity of such an environment and have a personality suited for the challenges it presents. Our work environment is exciting and forward thinking and relies heavily on personal initiative.

What can we offer?

Aside from the chance to work at truly unique big science project, you can also expect:


• An opportunity to contribute to the future discoveries within neutron science.
• A stunning, brand new workplace filled with innovative minds and brilliant people from across the globe.
• A challenging, innovative and stimulating work environment.
• Market competitive compensation that is individual and differentiated according to role, responsibilities, individual skills, abilities and achievements.
• 30 days of annual leave, as well as more than 10 days of public holiday and company days off or days with limited working hours.
• Monthly pension contributions on top of your salary.
• Flexible working arrangements and a real work-life balance.

If you see yourself in what we’re looking for, please provide your CV and motivation letter in English by clicking on “apply” and following the instructions. Please be aware that we can only accept direct applications made via the ESS website.

Certain roles at ESS require health and safety checks and/or security clearance procedures, which will be performed as part of the recruitment and onboarding process.

The last day for receiving application is February 22 2026 - so submit your application as soon as you can.

For more information regarding the ESS recruitment process, please contact Sofie Berg – Recruitment partner – at [email protected]  

For further information regarding the position, please contact Mikhail Feygenson – Head of Diffraction & Imaging Division – via [email protected]

For trade union information, please contact Unionen representative Nuno Elias on [email protected] or SACO/Swedish Association of Graduate Engineers representative Marc Kickulies at [email protected] 

We look forward to receiving your application soon! Visa mindre

Kranförare och tunggodshanterare

ESS i Lund söker dig som är en erfaren kranförare och tunggodshanterare till vårt team ”Installation and Rigging”. Gruppen ansvarar för att vägleda övriga organisationen samt utföra riggningsaktiviteter såsom tunggodshantering och krankörning. Om tjänsten Dina arbetsuppgifter kommer i huvudsak vara att: • utföra riggningsarbeten inom områdena lyft, montering och demontering av utrustning på ESS och närliggande lagerutrymmen. • ge vägledning till hela o... Visa mer
ESS i Lund söker dig som är en erfaren kranförare och tunggodshanterare till vårt team ”Installation and Rigging”. Gruppen ansvarar för att vägleda övriga organisationen samt utföra riggningsaktiviteter såsom tunggodshantering och krankörning.

Om tjänsten

Dina arbetsuppgifter kommer i huvudsak vara att:


• utföra riggningsarbeten inom områdena lyft, montering och demontering av utrustning på ESS och närliggande lagerutrymmen.
• ge vägledning till hela organisationen inom området, såsom lyftmetoder samt installationsprocedurer.
• utföra lastning/lossning av material, underhåll av och mindre reparationer på lyftutrustning, samt rapportering av eventuella materialfel. Det ingår även att röja upp och ta hand om verktyg efter avslutat arbete.
• stötta gruppledaren med fortsatt etablering av riggningsfunktionen inom organisationen.
• stötta gruppledaren med att hantera ansvaret av riggningsmaterial samt kranar på anläggningen.

Denna roll kräver hälso- och säkerhetskontroller som kommer att utföras på slutkandidaten i rekryteringsprocessen.

Det här är en tillsvidareanställning på heltid i Lund med sex månaders provanställning. Det är önskvärt men inte avgörande om du har möjlighet att börja så snart som möjligt.

Om dig
För att trivas i denna tjänst krävs några års erfarenhet av arbete med de arbetsuppgifter som beskrivs ovan. Du behöver ha truckförarutbildning, kranförarbevis för travers, samt körkort med minst B-behörighet.

Det är meriterande om du har erfarenhet av svenska regler och förordningar inom området.

Du kan kommunicera på engelska som är arbetsspråket på ESS. Kunskaper i svenska är meriterande då din närmsta arbetsgrupp pratar svenska.

För att långsiktigt trivas i rollen tror vi att du tycker om att kommunicera och samarbeta med människor med olika bakgrund och kompetensområden, och du vet att både tålamod och flexibilitet är användbara egenskaper. Du är lösningsorienterad, serviceminded och strävar efter att hålla deadlines, samtidigt som du arbetar ansvarsfullt och säkert, med fokus på kvalitet.

Om ESS
European Spallation Source (ESS) i Lund är ett samarbetsprojekt med tretton europeiska medlemsländer. ESS anställer motiverade och inspirerande människor från hela världen för att utforma, bygga och driva världens mest kraftfulla neutronkälla. Vi söker skickliga personer inom en rad olika områden, som tycker om samarbete och som är entusiastiska inför att vara en del av vetenskapens framtid i Europa.

Intresserad? Vi hoppas det!
Klicka på länken och bifoga dina ansökningshandlingar.

Sista ansökningsdag är 11 januari 2026. Med anledning av julledigheter kommer vi hantera ansökningar först efter sista ansökningsdag.

För mer information om rekryteringsprocessen, vänligen kontakta rekryterare Sofie Berg; [email protected]

För ytterligare information om tjänsten, vänligen kontakta rekryterande chef Kristofer Falkland; [email protected]

För facklig information, vänligen kontakta Unionens representant Nuno Elias; [email protected] eller SACO/Sveriges Ingenjörers representant Marc Kickulies; [email protected]

Välkommen med din ansökan! Visa mindre

Automation Engineer

The European Spallation Source is one of the largest science and technology infrastructure projects being built today. The project includes the most powerful linear proton accelerator ever built, a five-tonne, helium-cooled tungsten target wheel, 15 state-of-the-art neutron instruments, a suite of laboratories, and a supercomputing data management and software development centre. In the context of its history and future as a scientific organisation, howeve... Visa mer
The European Spallation Source is one of the largest science and technology infrastructure projects being built today. The project includes the most powerful linear proton accelerator ever built, a five-tonne, helium-cooled tungsten target wheel, 15 state-of-the-art neutron instruments, a suite of laboratories, and a supercomputing data management and software development centre. In the context of its history and future as a scientific organisation, however, it is more than the sum of its parts. It is a brand-new Big Science organisation and we are building it from the ground up.

Come and build the future of Science with us!

About the role:

The ESS is at an exciting turning point. It is in transition from being a construction site, to being an operating facility. To help us realise our goal of being the most powerful neutron source in the world, we are now looking for four Automation Engineers to join the Automation Section, located within our Integrated Control Systems (ICS) Division.

The scope of the Automation Section is to design, develop, deliver and maintain control systems based on industrial automation technology such as Programmable Logic Controllers (PLC) and to integrate them with the EPICS (Experimental Physics and Industrial Control System) software infrastructure. The Automation Section develops and maintains also the control system operator interfaces (OPIs), as well as the archive and alarm configurations of the PLC-based control systems.

As an Automation Engineer at ESS your responsibilities will be the following:


• Responsible for development and integration of control systems, including
• Define cost and schedule.
• Investigate innovative approaches and techniques.
• Conceptualize solutions/plans.
• Develop and evaluate solutions and plans.
• Ensure solution is in compliance with procedures, programs and policies.
• Document design/development.
• Review other engineering designs.
• Responsible for verification and validation of integrated control systems
• Responsible for interacting with system owners to ensure successful deployment of integrated control systems

These are full-time, permanent positions with a six-month probationary period based at the ESS Campus in Lund, Sweden.

About you:

As a person, you are proactive, self-motivated, responsible, structured and eager to grow in a fast-paced, impact-driven environment. You enjoy working both independently and together with others within a team. You are comfortable communicating with both technical teams and external stakeholders.

We believe that you meet the following qualifications:


• Master’s degree in Automation Engineering, Electrical Engineering, or a related field.
• Have an excellent knowledge of PLC Programming according to standard IEC 61131-3
• Have a very good knowledge of EPICS software tool
• Have a very good knowledge of one of the following:

• Water Cooling systems process and control
• Radioactive Waste Management system process and control
• Cryogenics systems process and control
• Strong skills in technical writing, reporting, and documentation.


• Strong ability in independent problem-solving and solution development.
• Proficient in communication across diverse teams to support effective collaboration.

The working language of ESS is English but it would be great if you could also work in Swedish as well. For this role, we need someone who can start as soon as possible!

What can we offer?

Aside from the chance to work at truly unique big science project, you can also expect:


• An opportunity to contribute to the future discoveries within neutron science.
• A stunning, brand new workplace filled with innovative minds and brilliant people from across the globe.
• A challenging, innovative and stimulating work environment.
• Market competitive compensation that is individual and differentiated according to role, responsibilities, individual skills, abilities and achievements.
• 30 days of annual leave, as well as more than 10 days of public holiday and company days off or days with limited working hours.
• Monthly pension contributions on top of your salary.
• Flexible working arrangements and a real work-life balance.

If you see yourself in what we’re looking for, please provide your CV and motivation letter in English by clicking on “apply” and following the instructions. Please be aware that we can only accept direct applications made via the ESS website.

Certain roles at ESS require health and safety checks and/or security clearance procedures, which will be performed as part of the recruitment process.

We review applications continuously, so don’t miss out! Submit your application as soon as you can!

For more information regarding the ESS recruitment process, please contact Sara Tenggren – HR Generalist – at [email protected]. For further information regarding the position, please contact the Alfio Rizzo – Section leader for Automation Section Group  – via [email protected]

For trade union information, please contact Unionen representative Nuno Elias on [email protected] or SACO/Swedish Association of Graduate Engineers representative Marc Kickulies at [email protected] 

We look forward to receiving your application soon! Visa mindre

Accelerator Engineer (RF Cavity Specialist)

The European Spallation Source (ESS) is one of the largest science and technology infrastructure projects being built today. Our goal is to become the brightest source of neutrons for science and technology and be operational by the end of this decade. A state-of-the-art suite of neutron scattering instruments will be made available to address a wide range of scientific fields in fundamental and materials science. Powered by the world’s most advanced linea... Visa mer
The European Spallation Source (ESS) is one of the largest science and technology infrastructure projects being built today. Our goal is to become the brightest source of neutrons for science and technology and be operational by the end of this decade. A state-of-the-art suite of neutron scattering instruments will be made available to address a wide range of scientific fields in fundamental and materials science. Powered by the world’s most advanced linear proton accelerator, ESS will enable cutting-edge research in materials science, energy, health, and the environment for decades to come.

Join us in shaping the future of science - from the ground up.

About the role:

ESS is at an exciting turning point. It is in transition from being a construction site, to being an operating facility. To help us realise our goal of being the most powerful neutron source in the world, we are now looking for a RF cavity scientist or engineer to join the Linac Group to support the operation, maintenance and development of the normal-conducting and superconducting cavities of the ESS linear accelerator.

In this role, you will be working within a team of technicians and engineers. The ESS linac accelerating elements include an RFQ, 3 buncher cavities, a 5-segment drift-tube linac, 26 double spoke cavities and up to 120 elliptical cavities of two different families (medium beta and high beta). All of the normal conducting front-end, the spokes and 56 elliptical cavities are already installed for the staged commissioning of the facility at 2 MW power. Commissioning with low power beam is under way, and operation with higher beam power is planned to start in 2026 – when the protons can be sent to the spallation target.

Linac group members support operation with 24/7 on-call services and in periods of extended working hours during critical commissioning phases, which may require periods of work during weekends and unsocial hours.

The linac group operates an ion-source test stand (for studies of beam stability/reliability and optimisation) and a Cryomodule test stand. The development of a spare RFQ and of a full cryomodule repair facility are activities that will soon open with the transition to the operation phase. In addition to the operational support, you will have the opportunity to lead activities towards cavity performance recovery strategies (e.g. plasma processing of superconducting RF cavities) and improvements of the handling and testing infrastructure at ESS (e.g. provisions for clean room cavity handling and vertical cavity testing). Your tasks will be managed and coordinated in close collaboration with the other groups of the Accelerator Division, with the Operations Division and in collaboration with ESS in-kind partners. All work at ESS is performed in compliance with rules for health and safety and follows ESS standards for engineering and documentation.

This is a permanent, full-time position based at the ESS Campus in Lund, Sweden.

About you:

To excel in this role, we need a highly skilled and adaptable engineer or scientist with a deep understanding of radio frequency (RF) cavity technology, particle accelerators, and high-power beam physics. You will be responsible for ensuring the reliable operation, maintenance, and development of the normal-conducting and superconducting cavities of the ESS linear accelerator. As such, you should be comfortable working in a dynamic, hands-on, and high-stakes environment where precision, collaboration, and innovation are key to our collective success.

A master’s degree or a PhD in Physics, Engineering, or a related discipline (or equivalent professional experience), as well as extensive technical expertise in superconducting RF cavity systems, accelerator physics, or high-power RF systems is essential for this role. You must have a strong understanding of normal-conducting and superconducting accelerator cavities, including aspects of design, commissioning, and operation.

You need to have extensive, hands-on practical experience with accelerator technology. This includes commissioning, testing, and troubleshooting accelerator components, as well as knowledge of beam dynamics, RF power sources, cryogenic systems, and vacuum technology. You should also be very familiar with beam transport systems, ion sources, and accelerator magnets. Prior experience with low-level RF (LLRF) systems, klystrons, and solid-state RF amplifiers is highly desirable. Experience of ensuring compliance with radiation safety, cryogenic safety, and high-voltage protocols and an ability to assess risks and implement mitigation strategies in an accelerator environment is a prerequisite for this role.

Aside from your technical competence, you should be comfortable working closely with engineers, scientists, technicians, and operations teams. Experience of collaborating with in-kind partners, research institutions, and industrial suppliers would be a benefit. The transition from construction to operation requires flexibility in handling unexpected challenges. Therefore, we need someone who can analyse complex technical issues, identify root causes, and implement effective solutions which balance short-term problem-solving with long-term planning.

Documenting processes, writing technical reports, and presenting findings to colleagues and stakeholders is another important aspect of this role.

Excellent verbal and written English communication skills are required, as this is the working language of ESS.

To apply:

If you see yourself in what we’re looking for, please provide your CV and motivation letter in English by clicking on “apply” and following the instructions. Please be aware that we can only accept direct applications made via the ESS website. Submit your application as soon as you can and quote the job reference number ESD-75716 in your application.

This role requires additional background screening processes and health and safety checks, which will be performed during the recruitment process.

For further information regarding the position, please contact Talent Acquisition Specialist Daniel Nordin Baker on [email protected]

For trade union information, please contact Unionen representative Nuno Elias on [email protected] or SACO/Swedish Association of Graduate Engineers representative Marc Kickulies at [email protected] Visa mindre

Chef för drift och underhåll av vår spallation mål

The European Spallation Source (ESS) is one of the largest science and technology infrastructure projects being built today. Our goal is to become the brightest source of neutrons for science and technology and be operational by the end of this decade. A state-of-the-art suite of neutron scattering instruments will be made available to address a wide range of scientific fields in fundamental and materials science. Powered by the world’s most advanced linea... Visa mer
The European Spallation Source (ESS) is one of the largest science and technology infrastructure projects being built today. Our goal is to become the brightest source of neutrons for science and technology and be operational by the end of this decade. A state-of-the-art suite of neutron scattering instruments will be made available to address a wide range of scientific fields in fundamental and materials science. Powered by the world’s most advanced linear proton accelerator, ESS will enable cutting-edge research in materials science, energy, health, and the environment for decades to come.

Join us in shaping the future of science.

About the role:

We are seeking an experienced Group Leader to head our Spallation Target/Neutron Source Operations & Maintenance Group. The Target Station is the beating heart of the ESS facility, as this is where the neutrons are produced that make cutting edge research possible via the ESS instrument suite. The Group will be responsible for the leadership and coordination of the work within the group’s overall technical competence, which includes the planning, preparation and execution of the corrective maintenance, routine checks and operational activities within the ESS Target Station. You will also work with the ESS-wide operational groups to coordinate facility operation.

This is a hands-on technical and people leadership role requires a certified and experienced expert within the field of neutron spallation sources and neutron target operations. You will be instrumental in leading the team responsible for ensuring that neutron production meets operational targets and user uptime guarantees, whilst also planning and implementing strategic initiatives such as compliance frameworks and the further development of potential on-call support systems.

This is a full-time, permanent position which is based on-site at the ESS campus in Lund, Sweden.

Day-to-day, you will:


• Organise and lead the work of the group members, acting as the line manager for your team. This includes setting goals, leading performance evaluations, managing training programs, and hiring as needed to grow group capacity.
• Serve as the line manager for direct reports, whilst overseeing the work of contractors.
• Coordinate resource allocation to ensure required level of technical support can be delivered as needed.
• Foster a collaborative environment which provides support, guidance, and development opportunities for staff members.
• Lead and coordinate all functions related to the planning, preparation and execution of the corrective maintenance, routine checks and operational activities within the ESS Target Station.
• Prepare and manage the budget for the Group and allocate resources based on project needs and organisational priorities.
• Provide expert advice on operational and maintenance aspects to ESS management, engineering teams, and external collaborators.
• Drive and coordinate contributions to ESS’s SSM licensing process to ensure compliance with regulatory requirements.
• Promote open communication and contributing to the professional growth of team members through training and feedback.
• Ensure the right competencies are in place to support safe and efficient target station operations.
• Coordinate interfaces with relevant internal and external stakeholders to ensure compliance and operational readiness.

About you:

To be considered for this role, you must have an academic and professional background in engineering, holding at least a master’s degree (or higher) in Mechanical Engineering, Energy, or a related field. A PhD and published research in spallation source operations would be considered an advantage. Your experience must span several years in the operation, commissioning, and maintenance of large-scale accelerator-driven facilities, ideally in major science laboratories or industrial settings. Prior, demonstrable expertise of planning and executing operational strategies for neutron sources or target operations, plant installations, turbomachinery, process upgrading, overseeing corrective and preventive maintenance, routine checks, and troubleshooting of key facility systems is required for this role. Proven leadership of multi-disciplinary teams during the commissioning and ramp-up of new facilities is an asset.

As a skilled problem-solver, you are someone who excels at managing day-to-day operations while planning strategically for the future. With experience in managing teams, handling contracts, and collaborating with diverse stakeholders, you must be able to effectively balance immediate priorities with long-term goals. Your technical insight and leadership ability inspire those around you to deliver their best work in a fast-paced, safety-focused environment.

As a Group Leader, you will have the opportunity to play a pivotal role in ensuring that one of the world’s foremost research facilities always operates to the highest standards. Strong interpersonal and communication skills define your approach to building highly functional teams as they allow you to interact effectively with technical systems teams and management stakeholders. You therefore need to have the organisational mindset needed to contribute to – or develop – structured workflows and documentation to optimise operational processes.

The working language of ESS is English, but the ability to speak another European language would be an advantage.

To apply:

Please provide your CV and motivation letter in English by clicking on “apply” and following the instructions. Please be aware that we can only accept direct applications made via the ESS website. We review applications continuously and may close applications early if suitable candidates are identified, so submit your application as soon as you can - stating the job reference number ESD-72724 in your application.

This role requires additional background screening processes and health and safety checks, which will be performed during the recruitment process.

For further information regarding the position, please contact Talent Acquisition Specialist Daniel Nordin Baker on [email protected]

For trade union information, please contact Unionen representative Nuno Elias on [email protected] or SACO/Swedish Association of Graduate Engineers representative Marc Kickulies at [email protected] Visa mindre

Instrument Scientist for SKADI (Small Angle Neutron Scattering)

The European Spallation Source (ESS) is one of the largest science and technology infrastructure projects being built today. Our goal is to become the brightest source of neutrons for science and technology and be operational by the end of this decade. A state-of-the-art suite of neutron scattering instruments will be made available to address a wide range of scientific fields in fundamental and materials science. Powered by the world’s most advanced linea... Visa mer
The European Spallation Source (ESS) is one of the largest science and technology infrastructure projects being built today. Our goal is to become the brightest source of neutrons for science and technology and be operational by the end of this decade. A state-of-the-art suite of neutron scattering instruments will be made available to address a wide range of scientific fields in fundamental and materials science. Powered by the world’s most advanced linear proton accelerator, ESS will enable cutting-edge research in materials science, energy, health, and the environment for decades to come.

Join us in shaping the future of science - from the ground up.

About the role:

ESS is looking for a SANS Instrument Scientist to lead the SKADI instrument construction project. This is a critical role that exists within the Large-Scale Structures Division. SKADI is a small-angle neutron scattering instrument designed specifically with the needs of the complex soft matter, materials science, and hard condensed matter communities in mind, and will be among the first instruments to become operational at ESS. Leading the SKADI team, including the lead engineer, data scientist, operations engineer, and our in-kind partners, Forschungszentrum Jülich and Laboratoire Léon Brillouin, you will be tasked with delivering the SKADI instrument to hot commissioning and with taking it into user operations. Further, your responsibilities and qualifications will include:

The tasks and responsibilities of the SKADI instrument team include but are not limited to:


• Finalization of the installation of the SKADI instrument.
• Commissioning of the instrument, both with and without neutrons.
• Planning and implementation of further developments and upgrades of the instrument.
• Delivery of state-of-the-art scientific capabilities for internal and external users to enable the wider science community to advance science and technology.
• Pushing the state-of-the-art capabilities of small-angle neutron scattering.

Your role and responsibilities:


• Provide the scientific and technical leadership of the SKADI instrument project.
• Prepare “Early Science” experiments to be carried out during the initial operation phase of ESS.
• Provide expertise in the scientific application of small-angle neutron scattering and in small-angle neutron scattering method development.
• Manage scientific and technical project changes in accordance with project goals.
• Assist in tracking and ensuring timely project deliverable using ESS processes and appropriate tools.
• Monitor, communicate, and report on progress according to the ESS Construction Project requirements.
• Continue and develop your own research in line with the SKADI and Large Scale Structures Division science cases.
• Establish and maintain collaborations with universities, laboratories and other relevant actors.
• Engage with the international small-angle scattering community, e.g. through presentations at conferences/workshops and experiments at other facilities.
• Once in operation, support the user programme at ESS by performing local contacting duties and collaborative research.

Required qualifications:


• PhD in the physical sciences with research interests and publication record aligned with the science focus of the SKADI instrument, which includes soft matter, biophysics, materials science, and hard condensed matter physics.
• Experience and technical interest in small-angle neutron scattering, preferably using time-of-flight techniques, including knowledge of data treatment and modeling.
• Ability to work in a team with people of a variety of disciplines in an international collaboration.
• Excellent oral and written English skills.
• Flexibility to travel. The project requires occasional travel between ESS and partner facilities.

Additional desirable qualifications and experience:


• Knowledge of polarised small-angle neutron scattering.
• Operation and development of neutron instrumentation and/or instrument control.
• Programming experience in Python.
• Complementary experience from and competence in small-angle X-ray scattering.

To apply:

A career at ESS gives you the opportunity to contribute to the future discoveries within neutron science at a stunning, brand-new workplace filled with innovative minds and brilliant people from across the globe. We offer market competitive, individualised compensation which is differentiated according to role, responsibilities, individual skills, abilities and achievements as well as monthly pension contributions on top of your salary.

If you see yourself in what we’re looking for, please provide your CV and motivation letter in English by clicking on “apply” and following the instructions. Please be aware that we can only accept direct applications made via the ESS website. We review applications continuously, so submit your application as soon as you can and quote the job reference number ESD-74275 in your application. ESS reserves the right to close applications early once suitable candidates have been identified.

This role requires additional background screening processes and health and safety checks, which will be performed during the recruitment process.

For further information regarding the position, please contact Andrew Jackson on [email protected]

For trade union information, please contact Unionen representative Nuno Elias on [email protected] or SACO/Swedish Association of Graduate Engineers representative Marc Kickulies at [email protected] Visa mindre

Chef för radioaktivt avfallshantering avdelning

The European Spallation Source (ESS) is one of the largest science and technology infrastructure projects being built today. Our goal is to become the brightest source of neutrons for science and technology and be operational by the end of this decade. A state-of-the-art suite of neutron scattering instruments will be made available to address a wide range of scientific fields in fundamental and materials science. Powered by the world’s most advanced linea... Visa mer
The European Spallation Source (ESS) is one of the largest science and technology infrastructure projects being built today. Our goal is to become the brightest source of neutrons for science and technology and be operational by the end of this decade. A state-of-the-art suite of neutron scattering instruments will be made available to address a wide range of scientific fields in fundamental and materials science. Powered by the world’s most advanced linear proton accelerator, ESS will enable cutting-edge research in materials science, energy, health, and the environment for decades to come.

Join us in shaping the future of science - from the ground up.

About the role:

We are seeking a Group Leader to head our Remote Handling Group. The Remote Handling Group has the responsibility for planning and executing the processing of spent Target Station components, remote collection of active target components using shielded transfer casks as well as handling the short-term storage of processed activated material. As such, you will both lead and coordinate the work within the Group. This will include the design, build, operation, maintenance and logistics of the active cells, casks assemblies and other auxiliary remote handling equipment within the ESS Target Station.

This hands-on technical and people leadership role requires a certified and experienced expert within the field of remotely operated radioactive waste handling infrastructure. You will lead the team responsible for transporting, handling and processing high level radioactive Target components, whilst also planning and implementing strategic initiatives for development, optimisation and safety compliance.

This is a full-time, permanent position which is based on-site at the ESS campus in Lund, Sweden.

Day-to-day, you will:


• Organise and lead the work of the group members, acting as the line manager for your team. This includes setting goals, leading performance evaluations, managing training programs, and hiring as needed to grow group capacity.
• Serve as the line manager for approximately 8 direct reports.
• Coordinate resource allocation to ensure required remote handling support can be delivered as needed.
• Foster a collaborative environment which provides support, guidance, and development opportunities for staff members.
• Lead and coordinate functions related to the handling and processing of radioactive target station components.
• Prepare and manage the budget for the Group and allocate resources based on project needs and organisational priorities.
• Provide expert engineering advice and guidance to ESS management, engineering teams, and external collaborators.
• Drive and coordinate contributions to ESS’s SSM licensing process to ensure compliance with regulatory requirements.
• Promote open communication and contributing to the professional growth of team members through training and feedback.
• Ensure the right competencies are in place to support safe and efficient radioactive waste management operations.
• Manage/coordinate interfaces with relevant internal and external stakeholders to ensure compliance.

About you:

To be considered for this role, you must have an advanced academic foundation in engineering, ideally with a master’s level (or higher) degree in a relevant field such as mechanical, electrical, nuclear, or systems engineering – or an equivalent professional certification. You need to have significant, demonstrable experience working within technically demanding nuclear, high-radiation, or high-energy physics environments – preferably within multidisciplinary teams responsible for large-scale remote handling, robotics, and radioactive waste management solutions. A proven track record in the design, integration, and operational delivery of complex remote handling systems for critical infrastructure, including advanced hot cell facilities and manipulator technologies, is also essential for this role.

We are seeking an inspirational and dedicated leader with the ability to create an environment where all team members can experience success. As a skilled problem-solver, you should be someone who excels at managing day-to-day operations while planning strategically for the future. With experience in managing teams, handling contracts, and collaborating with diverse stakeholders, you must be able to effectively balance immediate priorities with long-term goals. Your technical insight and leadership ability inspire those around you to deliver their best work in a fast-paced, safety-focused environment.

As a Group Leader, you will have the opportunity to play a pivotal role in ensuring that one of the world’s foremost research facilities always operates to the highest standards. Strong interpersonal and communication skills define your approach to building highly functional teams, as they allow you to interact effectively with technical systems teams and management stakeholders. You therefore need to have the organisational mindset needed to contribute to – or develop – structured workflows and documentation to optimise operational processes.

The working language of ESS is English, but the ability to speak another European language would be an advantage.

To apply:

Please provide your CV and motivation letter in English by clicking on “apply” and following the instructions. Please be aware that we can only accept direct applications made via the ESS website. We review applications continuously and may close applications early if suitable candidates are identified, so submit your application as soon as you can - stating the job reference number ESD-72723 in your application.

This role requires additional background screening processes and health and safety checks, which will be performed during the recruitment process.

For further information regarding the position, please contact Talent Acquisition Specialist Daniel Nordin Baker on [email protected]

For trade union information, please contact Unionen representative Nuno Elias on [email protected] or SACO/Swedish Association of Graduate Engineers representative Marc Kickulies at [email protected] Visa mindre

Senior Project Manager

The European Spallation Source (ESS) is one of the largest science and technology infrastructure projects being built today. Our goal is to become the brightest source of neutrons for science and technology and be operational by the end of this decade. A state-of-the-art suite of neutron scattering instruments will be made available to address a wide range of scientific fields in fundamental and materials science. Powered by the world’s most advanced linea... Visa mer
The European Spallation Source (ESS) is one of the largest science and technology infrastructure projects being built today. Our goal is to become the brightest source of neutrons for science and technology and be operational by the end of this decade. A state-of-the-art suite of neutron scattering instruments will be made available to address a wide range of scientific fields in fundamental and materials science. Powered by the world’s most advanced linear proton accelerator, ESS will enable cutting-edge research in materials science, energy, health, and the environment for decades to come.

Join us in shaping the future of science - from the ground up.

About the role:

ESS is at a critical, but exciting turning point. It is in the final stages of transitioning from the construction and commissioning stage to being a world-class, operating facility. To help us realise our goal of being the most powerful neutron source in the world, we are looking to appoint a Senior Project Manager to join the ESS Project Directorate.

In this role, you will provide project management support to our Business and Functions (B&F) area and to our Operations and Machine Directorate to deliver the final stage of the transition from our current project phase to the steady state operations (SSO) phase of the facility. As such, this is a full-time, fixed-term opportunity for a period of three years. The role is based at the ESS main campus in Lund, Sweden.

Day-to-day, you will:


• Ensure that realistic project and quality plans are prepared and maintained as well as provide regular and accurate reports to stakeholders as appropriate.
• Drive project schedules to foster a delivery mindset within the focus areas.
• Maintain the Control Account Plan including Planned Budgeted Cost for Work Scheduled (BCWS).
• Perform verification and control of costs charged to the control account, including Actual Cost of Work Performed (ACWP).
• Validate work accomplished, schedule progress - Budgeted Cost for Work Performed (BCWP).
• Update Estimates to Complete (ETC) for work packages and also validate Estimates At Complete (EAC).
• Conduct formal cost and schedule variance analysis and develop recovery plans required to recover schedule or cost variances.
• Managing control account risks – both threats and opportunities.
• Develop detailed action plans should risks materialise to recover schedule and/or cost deviations.
• Process change requests for changes to budget, schedule or technical scope of the control account.
• Take on delegated responsibilities from the ESS Project Director as and when required.

About you:

For this role, we are looking for a suitably qualified and experienced project management professional with a solid and extensive background in managing major projects throughout the design, installation and commission phases. You must bring a track-record of delivering change in varied environments and have the confidence to work alongside stakeholders from all levels of an organisation – both internally and externally. You are practiced in creating and maintaining project management processes, including initiation, planning, executing, monitoring, risk management, change control, schedules and documentation.

Whilst prior experience of working at a neutron source or spallation facility is not required for this role, prior experience of working with big science projects would be a definite advantage. Since this is a fixed-term position, you need to be able to assimilate a lot of information about the project in a very short space of time. Furthermore, you need to bring professional experience in IPM, APM, XLPM or equivalent, as well as Microsoft Office and P6. As a person you have strong communication skills, a delivery mentality, and the ability to challenge procedures and processes. The proven ability to work strategically and to see the wider context – whilst not losing track of planning, organising, and following up – is essential.

Fluency in written and spoken English is a prerequisite. The ability to speak Swedish or another European language would be beneficial.

To apply:

A career at ESS gives you the opportunity to contribute to the future discoveries within neutron science at a stunning, brand-new workplace filled with innovative minds and brilliant people from across the globe. We offer market competitive, individualised compensation which is differentiated according to role, responsibilities, individual skills, abilities and achievements as well as monthly pension contributions on top of your salary.

If you see yourself in what we’re looking for, please provide your CV and motivation letter in English by clicking on “apply” and following the instructions. Please be aware that we can only accept direct applications made via the ESS website. Submit your application as soon as you can and quote the job reference number ESD-69296 in your application.

This role requires additional background screening processes and health and safety checks, which will be performed during the recruitment process.

For further information regarding the position, please contact Talent Acquisition Specialist Daniel Nordin Baker on [email protected] 

For trade union information, please contact Unionen representative Mikael Johansson on [email protected] or SACO/Swedish Association of Graduate Engineers representative Marc Kickulies at [email protected] Visa mindre

Instrument Scientist for ODIN Instrument

The Science Directorate at the European Spallation Source (ESS) invites applications for an instrument scientist for the ODIN imaging instrument. Description of Division The Diffraction and Imaging Division houses the instrument scientists and post-docs, responsible for designing, constructing and then operating the DREAM, MAGiC, BEER, HEIMDAL, ODIN and TBL instruments of the ESS. There are currently 15 instruments under construction for ESS, of which 5... Visa mer
The Science Directorate at the European Spallation Source (ESS) invites applications for an instrument scientist for the ODIN imaging instrument.

Description of Division

The Diffraction and Imaging Division houses the instrument scientists and post-docs, responsible for designing, constructing and then operating the DREAM, MAGiC, BEER, HEIMDAL, ODIN and TBL instruments of the ESS. There are currently 15 instruments under construction for ESS, of which 5, including ODIN, will be commissioned first.

Description Main Responsibilities

The current position is for an Instrument Scientist for ODIN, a versatile time-of-flight neutron imaging instrument designed to exploit the long-pulse source at ESS for wavelength-resolved, multimodal, and in-situ time-of-flight neutron imaging. ODIN will enable novel studies across materials science, engineering, energy technologies, and geoscience through techniques such as wavelength-resolved neutron radiography/tomography, dark-field imaging and polarized imaging.

The successful candidate will work closely with detector experts, data/software developers, and scientific collaborators to support final installation, commissioning, and early scientific operations of ODIN. The role also includes developing scientific applications of time-of-flight neutron imaging and supporting ESS users in the planning and execution of experiments. 

The position provides the opportunity to pursue independent research within the field of neutron imaging and to develop projects that align with ODIN’s scientific mission. Collaboration with the neighbouring MAX IV synchrotron and universities in ESS member countries is strongly encouraged. ESS will support and encourage the candidate to take up an adjunct university position to facilitate their research and supervision of students.

Qualifications

Essential qualifications and experience:


• PhD in physics, materials science, engineering, geoscience, or a related field relevant to neutron imaging.
• Extensive practical experience with neutron imaging or scattering instrumentation, ideally including time-of-flight methods.
• Proven hands-on experience in experimental work with neutron or X-ray imaging, including data acquisition, sample environments, or detector systems.
• Knowledge of data reduction, analysis and visualization workflows for imaging data (e.g. Python, ImageJ, Dragonfly, or equivalent frameworks).
• Demonstrated ability to conduct independent scientific research, supported by a strong publication record.
• Excellent interpersonal, communication, and presentation skills; ability to work both independently and collaboratively within multidisciplinary teams.
• Responsible attitude toward safety, flexibility in supporting experiments outside normal working hours, and willingness to travel internationally.
• Experience building collaborations, ideally within other ESS member countries.

Desirable experience:


• Programming or scripting skills for data processing (Python, C++, MATLAB).
• Experience with time-of-flight neutron imaging, Bragg-edge analysis, or quantitative wavelength-resolved imaging.
• Experience in in-situ/operando experiments, for example in energy materials, metallurgy, or geological systems.
• Experience commissioning or operating large-scale neutron or X-rays instruments.
• Familiarity with neutron detector systems, in particular scintillator-based camera detectors.
• Familiarity with Monte Carlo ray-tracing simulations.
• Previous involvement in user support or scientific operations at a large-scale facility.

Experience working in an international environment is preferred, and excellent oral and written English skills are prerequisites. Our work environment is characterized by rapid growth, a fast pace, and an international atmosphere with highly skilled personnel. You should enjoy such diversity and have a personality suited to the challenges and opportunities it presents. The ESS work environment is forward-thinking and collaborative, relying on personal initiative and teamwork.

What ESS can offer?

ESS can offer you a variety of things, such as passionate colleagues, a vibrant melting pot of diversity, and a challenging and high-paced work environment where our employees take great pride in designing and building a world-leading facility for materials research. If you were to join ESS, you would become an important piece of the puzzle, since all our skilled staff are needed to fulfill the overall mission. We value and need expertise, innovative minds, great ways of leading and interacting with others, and the ability to work with people regardless of culture and background.

Duration & Location

The position is permanent position with a 6-month probationary period and your workplace will be situated in Lund, Sweden.

Application & Contact

Please provide your curriculum vitae and cover letter in English by going to the ESS recruitment web page https://europeanspallationsource.se/careers/vacancies then clicking on “apply” and following the instructions. Please note we only accept applications via the ESS website or ESS intranet. Internal candidates are encouraged to apply through the intranet.

The deadline for applications is December 16th, 2025.

For more information regarding the ESS recruitment process in general, please follow this link https://europeanspallationsource.se/ess-recruitment-process. 

For further information regarding the open position, please contact Head of Diffraction & Imaging Division, Mikhail Feygenson, [email protected] 

For further information regarding the recruitment process for this position, please contact HR Officer, Janne Erwolter, [email protected].

 

We look forward to receiving your application!

Please be aware that we can only accept direct applications made via the ESS website.

Certain roles require additional background screening processes and health and safety checks, which will be performed during the recruitment process.
For more information regarding the ESS recruitment process in general, please follow this link: Careers | ESS


We have made our media choice regarding recruitments and kindly decline contact with media sellers. Visa mindre

Particle Accelerator Operator

The European Spallation Source is one of the largest science and technology infrastructure projects being built today. The project includes the most powerful linear proton accelerator ever built, a five-tonne, helium-cooled tungsten target wheel, 15 state-of-the-art neutron instruments, a suite of laboratories, and a super-computing data management and software development centre. In the context of its history and future as a scientific organisation, howev... Visa mer
The European Spallation Source is one of the largest science and technology infrastructure projects being built today. The project includes the most powerful linear proton accelerator ever built, a five-tonne, helium-cooled tungsten target wheel, 15 state-of-the-art neutron instruments, a suite of laboratories, and a super-computing data management and software development centre. In the context of its history and future as a scientific organisation, however, it is more than the sum of its parts. It is a brand-new Big Science organisation, and we are building it from the ground up.

Come and be the future of Science with us!

About the role:

ESS is at an exciting turning point. It is in transition from being a construction site, to becoming an operating facility. To help us realise our goal of being the most powerful neutron source in the world, we are looking to recruit more operators for our Main Control Room. The Operations Group is responsible for ensuring a well-organised and safe operation of the ESS neutron source by controlling and monitoring the facility - including the accelerator and target - as well as necessary support systems and infrastructure.

This is a truly interesting and diverse role where you’ll be an integral part of the team operating what will become the world’s most powerful accelerator driven neutron source. In terms of your day-to-day work, you will be part of a skilled, diverse and enthusiastic team of shift workers on a 24/7 shift rotation. Together, the team monitors the complex systems required to generate the neutron beam safely, ensures that the logbook for the shift is updated properly, performs accelerator tunnel search procedures as required, manages the keys to the personnel safety systems, works with technical systems groups and contributes to the development of the operational instructions, procedures and training. Over time you will develop a deep knowledge and understanding of all aspects of the facility operation and technical systems.

Analysing complex numerical data, verbal data and all other sources of information is a key part of this role, so you must be comfortable with breaking information into component parts, patterns and relationships, probing for further information or greater understanding of a problem and then making rational judgements from the available information and analysis. You can also get involved with other technical and non-technical projects as necessary, and you will act as a point of contact for questions concerning safety (radiological and conventional) when on shift.

ESS is a user facility where scientists and engineers will come from all corners of the world to perform their studies, 24 hours a day, 7 days a week, and with a goal of 95% reliability. Therefore, working outside normal working hours is to be expected for this role.

About you:

This role demands a highly skilled, mentally resilient, and process-driven individual who can operate under pressure in a 24/7 control room environment. Therefore, we are looking for calm, detail-oriented professionals who excel in high-stakes, fast-paced environments and who can think critically under pressure.

Preferably, you have a degree in Physics, Engineering, Computer Science, or a related technical field. However, we will also accept equivalent, relevant work experience. Along with this, we need someone with a strong foundation in real-time monitoring and control systems. Ideally, you have experience working in particle accelerator infrastructure, nuclear operations, or industrial automation, and are comfortable troubleshooting complex technical setups. Your ability to diagnose faults and resolve technical issues quickly is essential for ensuring operational continuity. Prior experience of coding in Python, C/C++, or Java would be a bonus, as would familiarity with control system software such as EPICS. However, EPICS is not a requirement as training is available.

Working in a 24/7 control room environment requires mental endurance, as you will be expected to maintain accuracy and situational awareness during 8-hour long shifts – including on nights and weekends. Given the nature of this role, you should be confident at making clear, high-stakes decisions – both during normal operation and when responding to emergency situations. Following procedures in the control room is essential, but we also want someone with a proactive attitude who can look for ways to improve efficiency and enhance operational best practices. As part of a world-class research facility, you must be eager to collaborate with engineers, scientists, and technicians to contribute to the continuous development of procedures, training, and safety culture.

To apply:

A career at ESS gives you the opportunity to contribute to the future discoveries within neutron science at a stunning, brand-new workplace filled with innovative minds and brilliant people from across the globe. We offer market competitive, individualised compensation which is differentiated according to role, responsibilities, individual skills, abilities and achievements as well as monthly pension contributions on top of your salary.

If you see yourself in what we’re looking for, please provide your CV and motivation letter in English by clicking on “apply” and following the instructions. Please be aware that we can only accept direct applications made via the ESS website. Submit your application as soon as you can and quote the job reference number ESD-71564 in your application.

This role requires additional background screening processes and health and safety checks, which will be performed during the recruitment process.

For further information regarding the position, please contact Talent Acquisition Specialist Daniel Nordin Baker on [email protected] or Control Room Operations Group Leader Yngve Levinsen on [email protected]  

For trade union information, please contact Unionen representative Nuno Elias on [email protected] or SACO/Swedish Association of Graduate Engineers representative Marc Kickulies at [email protected] 

We look forward to receiving your application! Visa mindre

Business Controller

The European Spallation Source is one of the largest science and technology infrastructure projects being built today. The project includes the most powerful linear proton accelerator ever built, a five-tonne, helium-cooled tungsten target wheel, 15 state-of-the-art neutron instruments, a suite of laboratories, and a super-computing data management and software development centre. In the context of its history and future as a scientific organisation, howev... Visa mer
The European Spallation Source is one of the largest science and technology infrastructure projects being built today. The project includes the most powerful linear proton accelerator ever built, a five-tonne, helium-cooled tungsten target wheel, 15 state-of-the-art neutron instruments, a suite of laboratories, and a super-computing data management and software development centre. In the context of its history and future as a scientific organisation, however, it is more than the sum of its parts. It is a brand-new Big Science organisation, and we are building it from the ground up.

We are seeking a highly motivated and detail-oriented Business Controller to join our Finance and Business Control (F&BC;) Division at ESS. You will report directly to the Head of Division F&BC; and collaborate closely with fellow Business Controllers, the Finance Group, and a wide range of internal and external stakeholders. Your insight, analyses and recommendations will help shape strategic decisions and ensure the organisation understands the financial impact of its business decisions.

Key responsibilities include:


• Calculating, tracking, and following up on ESS Member State contributions and indexing, maintaining strong rapport with Member States regarding contributions.
• Developing and maintaining the database for Member State contributions and the Member Contribution Sheets.
• Managing currency-related processes, transactions, and reports.
• Supporting the production, development, and maintenance of the ESS Medium-Term Financial Estimates (MTFE).
• Supporting the annual reconciliation between statutory accounts and budgetary out-turn.
• Supporting the calibration of hourly rates.
• Preparing financial data and reports for meetings of the ESS Admin and Finance Committee and ESS Council.
• Contribute to data quality initiatives and implementation of financial systems.
• Supporting compliance with the ERIC and accounting standards.

This role is ideal for a finance professional with experience in stakeholder management, financial analysis, and process improvement, eager to contribute to an organization focused on both operations and project, always with financial excellence in mind.

About you:


• You hold a master’s degree in finance, economics, accounting, or a related field.
• 4+ years of proven experience in controlling.
• Strong proficiency in MS Office Suite, especially Excel, including proven experience with pivot tables, and experience in setting up and maintaining large databases.
• Ideally, you have prior experience in working with a data warehouse, Unit4 Agresso, and Mercur.
• Ability to work in a cross-functional team and establish and maintain positive working relationships with internal and external stakeholders.
• Prior experience in budgeting, forecasting, and financial reporting.
• You are fluent in both spoken and written English; knowledge of Swedish is a plus
• Strong problem-solving skills and attention to detail
• Strategic thinking and ability to translate the organisational business model into a financial model.
• Excellent communication skills to present financial information clearly and effectively to non-financial stakeholders.
• Ability to work under pressure and meet tight deadlines.
• You love working in a team!

Duration and location:

This is a full-time, permanent position with a six-month probationary period. The position is located in Lund, Sweden.

What can we offer?

Aside from the chance to work at truly unique big science project, you can also expect:


• An opportunity to contribute to the future discoveries within neutron science.
• A stunning, brand-new workplace filled with innovative minds and brilliant people from across the globe.
• A challenging, innovative and stimulating work environment.
• Market competitive compensation that is individual and differentiated according to role, responsibilities, individual skills, abilities and achievements.
• 30 days of annual leave, as well as more than 10 days of public holiday and company days off or days with limited working hours.
• Monthly pension contributions on top of your salary.
• Flexible working arrangements and a real work-life balance.

If you are passionate about finance, structured and detail-oriented, we encourage you to apply!

We will review applications continuously so submit your application as soon as you can by clicking on “apply” and following the instructions. Please be aware that we can only accept applications in English submitted via the ESS website.

Certain roles require additional background screening processes and health and safety checks, which will be performed during the recruitment process.
For more information regarding the ESS recruitment process, please follow this link: Careers | ESS

For information related to the recruitment process feel free to reach out to Sara Tenggren – HR Generalist at [email protected]. For further information regarding the position, please contact the Hiring manager, Florian Weissbach at [email protected]

For trade union information, please contact Unionen representative Nuno Elias at [email protected] or SACO/Swedish Association of Graduate Engineers representative Marc Kickulies at [email protected].

We look forward to receiving your application! Visa mindre

Director General

The European Spallation Source (ESS), a multi-disciplinary research facility, is a European Research Infrastructure Consortium (ERIC) based in Lund, Sweden. ESS is building the world’s most powerful neutron source, which will enable ground-breaking experiments that address pressing global challenges in energy, health and the environment. ESS will be a cornerstone of the European and global development of advanced materials research and technology. ESS is ... Visa mer
The European Spallation Source (ESS), a multi-disciplinary research facility, is a European Research Infrastructure Consortium (ERIC) based in Lund, Sweden. ESS is building the world’s most powerful neutron source, which will enable ground-breaking experiments that address pressing global challenges in energy, health and the environment. ESS will be a cornerstone of the European and global development of advanced materials research and technology.

ESS is searching for a Director General (DG), with overall responsibility for the strategic leadership and development of ESS. The DG, together with the highly skilled staff, will deliver the completion of ESS construction, the transition to routine operation, and the development of a world class research programme, fully exploiting the capabilities of the neutron source for top-level research, technological development, innovation and societal challenges.

Responsibilities

The main responsibility of the DG is to provide effective leadership and management of ESS, including being responsible for managing staff and budgets. The DG reports to the ESS Council. At present, 13 European countries are members of ESS and represented in the Council.

The DG is the legal representative of the European Spallation Source ERIC. The DG should carry out the day-to-day management of the organisation with due diligence and in accordance with the ESS Statutes, the instructions and resolutions of the Council and applicable legal requirements. The DG should prepare and submit strategic, technical, scientific, legal, budgetary and administrative decisions to the Council. 

The DG will serve as ESS’s representative within the international scientific and technical communities, as well as in various international and regional political and public relations arenas. The DG should build the scientific reputation of ESS and take appropriate actions aimed at attracting new members.

The DG should develop the organisational structure and the team of staff to secure the immediate and long-term success of ESS, in particular ensuring a smooth transition from the construction to the operational phase. The DG should provide strong and visible organisational as well as personal leadership, with the ability to lead collaboratively in a complex environment. Furthermore, the DG is both the outward-looking face of ESS and the leader of the internal ESS organisation, setting the tone, culture and values for ESS as an organisation.

The DG should be a passionate advocate for the use and benefits of neutron techniques for world class science and innovation. The DG should have a global outlook and develop ESS, both on the short and long timescale, with a view to its position in the international neutron ecosystem, closely collaborating with other neutron and related facilities such as analytical and computing research infrastructures, the broader scientific community and industry.

Qualifications

The successful candidate should have a distinguished record of leadership and experience of managing international large and complex projects and/or organisations with a strong scientific background. Experience from leading a significant laboratory or advanced scientific research facility, especially with an international background and with the purpose of providing advanced experimental facilities and services to an external user community, is highly desirable.

Experience in leading major change within an organisation is desirable, to guide ESS through its transformation from construction to operation.

Personal characteristics

We are looking for a strong leader with recognized ability to determine and execute strategic prioritisations, working with their senior management through appropriate delegation. The right candidate can motivate and lead staff, providing opportunities for development and growth both as individuals and as a team. Furthermore, the successful candidate will have demonstrated the ability to prioritize and skilfully handle multiple political, technical, scientific, and organizational interests in a balanced way.

The successful candidate will have strong intellectual and analytical capabilities and the ability to easily get an overview over complex situations. Strong negotiation skills and experience combined with a “business” oriented attitude are essential aspects of the position.

Strong communication and interpersonal skills will be essential, including the ability to establish and maintain trust relationships with senior stakeholders in a complex international environment, including relationships with both ESS Council and the ESS workforce.

What ESS can offer?

We offer attractive employment and relocation conditions, the flexibility to balance work life with private life and good opportunities to further enhance your skills. You will be part of an organisational culture that promotes openness, collaboration, sustainability and excellence.

ESS is committed to being a diverse, inclusive and non-discriminatory workplace where all people are treated with equal respect and have equal opportunities to contribute fully to the success of the organization.

Duration & Location

The assignment is for five years with the option to apply for re-appointment. Employment should start during summer 2026 with the aim of officially assuming the role as DG in autumn 2026.

The position is based in Lund, Sweden.

Application & Contact

Please provide your curriculum vitae and cover letter in English via the ESS website (Careers/Vacancies). Please note that we only accept applications via the ESS website.

For further information about this position please contact the Chair of ESS Council [email protected] Visa mindre

Project Cost Controller

The European Spallation Source is one of the largest science and technology infrastructure projects being built today. The project includes the most powerful linear proton accelerator ever built, a five-tonne, helium-cooled tungsten target wheel, 15 state-of-the-art neutron instruments, a suite of laboratories, and a super-computing data management and software development centre. In the context of its history and future as a scientific organisation, howev... Visa mer
The European Spallation Source is one of the largest science and technology infrastructure projects being built today. The project includes the most powerful linear proton accelerator ever built, a five-tonne, helium-cooled tungsten target wheel, 15 state-of-the-art neutron instruments, a suite of laboratories, and a super-computing data management and software development centre. In the context of its history and future as a scientific organisation, however, it is more than the sum of its parts. It is a brand-new Big Science organisation, and we are building it from the ground up.  

We are now seeking three experienced Cost Controllers to join our Project Directorate. 

About the role 

Your main responsibility will be to provide integrated cost management support to our Project Management to maintain project costs, work breakdown structure, control account structure, and associated techniques to appropriately monitor, control and report on delivery of the project to schedule and cost. You will be an integral part of project teams and work closely with other project controls disciplines to provide an effective and value-added service.  

Key responsibilities also include owning control estimates and budgets, managing ACWP data (man-hours, sub-contracts, plant & materials), preparing accruals and journals, and leading monthly EAC reviews. You'll support earned value reporting, variance analysis, and produce detailed ETC forecasts. 

You'll manage control accounts and CBS, ensure schedule alignment with planners, and develop robust EACs. Additionally, you'll handle scope changes, oversee monthly reporting, forecast staffing plans, and conduct Earned Value Analysis to identify risks and recovery strategies. 

In this role, you will be able to use your expertise with systems such as project dashboards, cost control databases, and schedule management tools to ensure data integrity and project success. 

You will report functionally to the Project Control Manager centrally and will be deployed within an ESS Sub-Project to lead all Cost Management activities.  

About you 

We are seeking a person who possesses a strong ability to plan, organize, execute, and follow-up, while keeping their eyes on the larger picture. You are strategic and agile with the ability to challenge procedures and processes to optimize delivery. 

You can work effectively under pressure, meet tight deadlines, and adapt seamlessly to changing circumstances. Exceptional communication and interpersonal skills are essential, along with keen attention to detail and a proactive problem-solving mindset. You are receptive to feedback, committed to personal and professional growth, and capable of fostering positive, collaborative relationships within a team. Strong analytical and numerical skills will further support success in this position.  

In addition, you meet the following requirements:  


• Experience within major EPCC Projects  


• Relevant experience in Project Controls and Project Delivery and ability to share best practice  


• High level understanding of Earned Value Management and associated analysis  


• Budget management, distribution, cost collection and forecasting experience  


• Detailed working proficiency using Excel  


• Experience of working with Microsoft Office and P6 Data  


• Experience in liaising with Finance Department and ERP / Accounting Systems  


• Excellent oral and written English skills, preferably in Swedish as well 

Duration and location 

These positions are permanent, full-time positions with a 6 month' probationary period based in Lund, Sweden. 

Why join us? 

Aside from the chance to work at truly unique big science project, you can also expect: 


• An opportunity to contribute to the future discoveries within neutron science. 


• A stunning, brand-new workplace filled with innovative minds and brilliant people from across the globe. 


• A challenging, innovative and stimulating work environment. 


• Market competitive compensation that is individual and differentiated according to role, responsibilities, individual skills, abilities and achievements. 


• 30 days of annual leave, as well as more than 10 days of public holiday and company days off or days with limited working hours. 


• Monthly pension contributions on top of your salary. 


• Flexible working arrangements and a real work-life balance. 

Application process 

We will review applications continuously so submit your application as soon as you can by clicking on “apply” and following the instructions. Please be aware that we can only accept applications in English submitted via the ESS website. 

Certain roles require additional background screening processes and health and safety checks, which will be performed during the recruitment process.  

For more information regarding the ESS recruitment process, please follow this link: Careers | ESS 

For further information regarding the position, please contact Andrew Raw [email protected]. For information related to the recruitment process feel free to reach out to Sara Tenggren – HR Generalist at [email protected]

For trade union information, please contact Union representative Nuno Elias at [email protected] or SACO/Swedish Association of Graduate Engineers representative Marc Kickulies at [email protected]

We look forward to receiving your application! Visa mindre

Instrument Operations Engineer for FREIA

The European Spallation Source is one of the largest science and technology infrastructure projects being built today. The project includes the most powerful linear proton accelerator ever built, a five-tonne, helium-cooled tungsten target wheel, state-of-the-art neutron instruments, a suite of laboratories, and a data management and software development centre. It is a brand-new Big Science organisation and we are building it from the ground up. We are n... Visa mer
The European Spallation Source is one of the largest science and technology infrastructure projects being built today. The project includes the most powerful linear proton accelerator ever built, a five-tonne, helium-cooled tungsten target wheel, state-of-the-art neutron instruments, a suite of laboratories, and a data management and software development centre. It is a brand-new Big Science organisation and we are building it from the ground up.

We are now looking for an Instrument Operations Engineer for the FREIA instrument. The position is with the Large Scale Structures Division.

About the division

The Large Scale Structures Division consists of the scientific staff that are leading the instrument construction projects and the staff that will eventually execute the day-to-day operations of five neutron instruments. The upcoming responsibilities of the division are


• Finalize installation of the instruments
• Plan and implement further developments and upgrades of the instruments
• Commissioning of the instruments, both with and without neutrons
• Deliver state-of-the-art scientific capabilities for internal and external users to enable the wider science community to advance science and technology

About the role

As an Instrument Operations Engineer you will:


• Join a team of scientists, engineers, and technicians aiming to prepare a neutron instrument for first user operation and beyond
• Collaborate closely with engineers and technicians in specialist disciplines at ESS

Between now and the start of commissioning with neutrons (“hot commissioning”):


• Prepare, execute, and document test plans for instrument components (“cold commissioning), working with the instrument scientist and engineer and in liaison with staff in specialist disciplines
• Support the instrument scientists in preparing safety documentation, including standard operating procedures and operations manuals for an instrument.
• Prepare for and participate in commissioning experiments at other facilities to test components for an instrument (e.g. testing of sample environment equipment)
• Participate in the mechanical design and realization of modifications to an instrument required during installation and testing

After the start of hot commissioning:


• Support the instrument scientists in preparing, executing and documenting testing of an instrument with neutrons (“hot commissioning”)
• Plan, manage and/or execute scheduled and unscheduled maintenance of the instrument
• Act as the system owner for an instrument, keeping the maintenance records and engineering documentation up to date with changes.

• Responsiblity for instrument specific components
• Coordination with specialized technology groups (Choppers, Detectors, Motion Control, etc.) and support teams (vacuum, rigging, survey and alignment)
• Working with operational groups (Hall Coordinators, ESH, Control Room Operators)

• Participate in the mechanical design and realization of upgrades for an instrument
• Support user experiments on the instrument by e.g. building mechanical and/or electrical support systems in the in-house workshop, and helping to set-up sample environments, this includes:

• Writing and Review of Experiment Hazard Analyses
• Providing assistance in sample mounting
• Setting up of instrument configurations
• Assisting in user experiments, including training users on instrument operations


About you

We are looking for a self-motivated person who is keen to support an instrument team in order to get it ready for first neutrons. You should be a ‘hands-on’ person and open to learn new things along the way. You will have: 


• A bachelor’s or masters degree in Engineering or the Physical Sciences, or equivalent technical experience
• Experience in the hands-on management of complex technical equipment
• Excellent communication and interpersonal skills to be able to interact effectively with a diverse group of scientists, engineers, and technical staff
• Excellent oral and written English skills

Physical requirements for this job include the use of hand, eye and ear protection gear, stooping, kneeling, lifting, and sitting or standing for extended periods of time.

It would be beneficial if you will also have:


• Experience with neutron scattering experiments
• Experience with the development, operation, and maintenance of complex scientific equipment
• Ability to perform simple mechanical design (CAD) and work with designers
• Experience in programming (python, Matlab, C++ or similar)
• Experience working in an international research environment

We are building ESS from the ground up, so we need someone who is comfortable not only following procedures, but also creating them. We attach great importance to personality and attitude, so we're looking for a real team player: Someone who is sociable, has excellent communication skills and who likes to collaborate with different people.

Duration & Location

The position is a 3 year fixed term role and the workplace will be situated in Lund, Sweden. Travelling is expected if the need arises.

Application & Contact

Please provide your curriculum vitae and cover letter in English by clicking on “apply” and following the instructions. Note that we only accept applications via the ESS website or ESS intranet. Internal candidates are encouraged to apply through the intranet. We accept candidates into the recruitment process continuously, so please do not hesitate to apply. This position will remain open until a suitable candidate has been found.

Certain roles at ESS require health and safety checks and/or security clearance procedures, which will be performed as part of the recruitment process.

For further information regarding the position, please contact Andrew Jackson, Head of Large Scale Structures Division, [email protected]

For more information about the recruitment process, please contact Kathryn Quaak, HR Officer, [email protected]

For trade union information, please contact Unionen representative Mikael Johansson on [email protected] or SACO/Swedish Association of Graduate Engineers representative Marc Kickulies at [email protected] 

We look forward to receiving your application! Visa mindre

HR Officer

The European Spallation Source is one of the largest science and technology infrastructure projects being built today. The project includes the most powerful linear proton accelerator ever built, a five-tonne, helium-cooled tungsten target wheel, 15 state-of-the-art neutron instruments, a suite of laboratories, and a super-computing data management and software development centre. In the context of its history and future as a scientific organisation, howev... Visa mer
The European Spallation Source is one of the largest science and technology infrastructure projects being built today. The project includes the most powerful linear proton accelerator ever built, a five-tonne, helium-cooled tungsten target wheel, 15 state-of-the-art neutron instruments, a suite of laboratories, and a super-computing data management and software development centre. In the context of its history and future as a scientific organisation, however, it is more than the sum of its parts. It is a brand-new Big Science organisation, and we are building it from the ground up.

Come and shape the future of science with us!


We are now looking for a HR Officer to join our HR team. 



About the team
You will join a highly skilled HR team dedicated to collaboration, enhancing efficiency, and fostering continuous learning. The HR division, part of the Administrative Directorate, consists of 14 colleagues who collectively support the ESS organisation in staffing, employee services, strategic HR support, work environment, compensation & benefits, and learning & development. 

About the role
The ESS is at an exciting turning point. It is in transition from being a construction site, to being an operating facility. To help us realise our goal of being the most powerful neutron source in the world, we are now seeking to hire an HR Officer to play a vital role in attracting and securing top talent across all of our business units. In this dynamic and varied role, you will focus on two main areas: Project coordination of staff planning and Recruitment. 

As part of the project coordination team, you will play a key role in driving project activities forward and helping meet critical deadlines. Your proactive approach will support smooth collaboration and efficient delivery across stakeholders. For this project you will report to the Head of HR division. 

On the recruitment side, you will take responsibility for all aspects of the hiring process, ensuring high-quality service throughout both the operational and administrative tasks. You will support and coach hiring managers, offering expert guidance on best practices and ensuring a positive, streamlined experience for all candidates. Fot the recruitment activities you will report to the HR Operations Group Leader.

Main responsibilities within the role:

Project coordination; staff planning


• Provide general support to the HR Head of Division for all aspects of the staff planning project.
• Coordinate and align activities between diverse stakeholders within the staff planning project.
• Secure and follow up on deliverables in accordance with established schedules and deadlines.

Recruitment


• Take a lead coordinating role and maintain oversight of all recruitment activities for allocated recruitments.
• Drive and execute recruitment processes from start to finish handling everything from job postings and candidate selection, interviews to onboarding - whilst ensuring efficiency and compliance with ESS policies.
• Ensure consistently high service standards in all operational and administrative recruitment tasks.
• Support and coach recruiting managers throughout the recruitment process.
• Implement and update ways of working, procedures, guidelines, and rules within designated responsibilities.

About you:
We welcome candidates who are self-driven, service-oriented, and determined, and who are eager to contribute to and improve our processes. To be successful in this role you should possess the following qualifications:


• Bachelor’s degree in Human Resources or an equivalent qualification.
• At least 7 years proven experience in HR coordination and recruitment, preferably in an international or scientific environment.
• Experience working as a HR business partner or HR specialist in an international work environment is an advantage.
• Excellent organizational and communication skills gained within your professional work as HR recruiter or HR business partner.
• Strong stakeholder management and ability to work across division.
• Self-driven and proactive with a service-minded approach.
• Fluency in English; use to work with English in your daily work.

What can we offer?
Aside from the chance to work at truly unique big science project, you can also expect:


• An opportunity to contribute to the future discoveries within neutron science.
• A stunning workplace filled with innovative minds and brilliant people from across the globe.
• A challenging, innovative and stimulating work environment.
• Market competitive compensation that is individual and differentiated according to role, responsibilities, individual skills, abilities and achievements.
• 30 days of annual leave, as well as more than 10 days of public holiday and company days off or days with limited working hours.
• Monthly pension contributions on top of your salary.
• Flexible working arrangements and a real work-life balance.

Duration & Location
This is a full-time, fixed term position until 2027-03-31 based at the ESS Campus in Lund, Sweden. The position is to be filled as soon as possible.

Application
If you see yourself in what we are looking for, please provide your CV and motivation letter in English by clicking on “apply” and following the instructions. Please submit your application as soon as possible as we are activity recruiting with continuous interviews.

 

We look forward to receiving your application!

Please be aware that we can only accept direct applications made via the ESS website.

Certain roles require additional background screening processes and health and safety checks, which will be performed during the recruitment process.
For more information regarding the ESS recruitment process in general, please follow this link: Careers | ESS


We have made our media choice regarding recruitments and kindly decline contact with media sellers. Visa mindre

IT Support Technician

The European Spallation Source (ESS) is a partnership organization of 13 European member countries located in the city of Lund, Sweden. The ESS is hiring motivated and inspiring people from across the globe to design, construct and operate the world’s most powerful neutron source. We seek collaborative, talented people in a range of fields who are excited about playing a part in the future of science in Europe. About the role: As a valued member of our H... Visa mer
The European Spallation Source (ESS) is a partnership organization of 13 European member countries located in the city of Lund, Sweden. The ESS is hiring motivated and inspiring people from across the globe to design, construct and operate the world’s most powerful neutron source. We seek collaborative, talented people in a range of fields who are excited about playing a part in the future of science in Europe.

About the role:

As a valued member of our Helpdesk team consisting currently of 6 colleagues, you will play a central role in ensuring smooth and effective IT Support at ESS. Your primary responsibilities will include resolving incidents and service requests, either registered in our ticket system or reported directly by users visiting the IT Helpdesk. Collaborating closely with your colleagues you will tackle a variety of tasks such as installations, maintenance of laptops and workstations, support for equipment, systems and applications.

To thrive as an IT Support technician at ESS, you bring a natural flair for service and enjoy delivering quality and long-term solutions. You are equally comfortable working independently or as part of a team, and you appreciate and understand the importance of structured processes and thorough documentation. Your responsiveness to user inquiries and enthusiasm for interacting with people will be key to your success in this role.

Day-to-day, you will:


• Man the IT Helpdesk
• Configure and deploy client computers and phones
• Troubleshoot computer hardware - and software issues
• Troubleshoot issues with conference rooms equipment
• Troubleshoot issues with printers
• Handle purchases of IT related equipment and software
• Handle repair cases
• Handle hardware life cycle
• Read technical manuals, confer with users
• Write or uppdate Supporter guides and knowledgebase articles
• Maintain computer- and screen inventory
• Collaborate with other groups to solve issues

Duration & Location


• This is a permanent, full-time position with a 6 months’ probationary period based at the ESS campus in Lund, Sweden.

About you:


• At least 3 years of relevant work experience either as a support technician working in an IT Helpdesk, helping people both in person, remote and by phone, in other similar type of position or equivalent education.
• Strong knowledge in Windows 10 and 11, Mac OS, IOS and Linux (essentially Ubuntu) distributions as an administrator or power user is a necessity.
• Strong knowledge in Microsoft Office365
• Experience with meeting room support (Crestron- and Poly control systems)
• Experience in advanced hardware troubleshooting of laptops and workstations
• Experience working in the Identity & Access management platform OneIdentity
• Experience in Microsoft Active Directory
• Experience in client backup software
• Basic understanding of networks
• Effective English communication skills, both spoken and written, knowledge of other European languages would be considered as a big plus
• Experience of working in an international environment is beneficial
• Relevant Certifications. e.g. as an MCDST (Microsoft Certified Desktop Support Technician) would be a significant advantage.

To apply:

A career at ESS gives you the opportunity to contribute to the future discoveries within neutron science at a stunning, brand-new workplace filled with innovative minds and brilliant people from across the globe. We offer market competitive, individualised compensation which is differentiated according to role, responsibilities, individual skills, abilities and achievements as well as monthly pension contributions on top of your salary.

If you see yourself in what we’re looking for, please provide your CV and motivation letter in English by clicking on “apply” and following the instructions. Please be aware that we can only accept direct applications made via the ESS website. Submit your application as soon as you can and quote the job reference number ESD-56928 in your application.

Certain roles require additional background screening processes and health and safety checks, which will be performed during the recruitment process.
For more information regarding the ESS recruitment process, please follow this link: Careers | ESS

For further information regarding the position, please contact Anette Smedberg-Haukka, Group Leader IT Helpdesk & Support, at [email protected].

For further information regarding the recruitment process, please contact Sara Tenggren, HR-Generalist, at [email protected].

For trade union information, please contact Unionen representative Mikael Johansson on [email protected] or SACO/Swedish Association of Graduate Engineers representative Marc Kickulies at [email protected]

We look forward to receiving your application! Visa mindre

Group Leader for the Electrical Power Systems group

The European Spallation Source (ESS) is one of the largest science and technology infrastructure projects being built today. Our goal is to become the brightest source of neutrons for science and technology and be operational by the end of this decade. A state-of-the-art suite of neutron scattering instruments will be made available to address a wide range of scientific fields in fundamental and materials science. Powered by the world’s most advanced linea... Visa mer
The European Spallation Source (ESS) is one of the largest science and technology infrastructure projects being built today. Our goal is to become the brightest source of neutrons for science and technology and be operational by the end of this decade. A state-of-the-art suite of neutron scattering instruments will be made available to address a wide range of scientific fields in fundamental and materials science. Powered by the world’s most advanced linear proton accelerator, ESS will enable cutting-edge research in materials science, energy, health, and the environment for decades to come.

Join us in shaping the future of science - from the ground up.

About the role:

As we continue our transition into Steady State Operations, ESS is now seeking an experienced and dynamic Group Leader to lead our Electrical Power Systems (EPS) Group. The EPS Group is part of our Accelerator Division and is responsible for the specialised power supplies and modulators supplying klystrons, tetrodes and the normal conducting magnets. The Group Leader will also support other groups in the Accelerator Division regarding other power supplies and auxiliaries – and will provide advice on all aspects of electrical engineering and power distribution. 

Day-to-day, you will: 


• Plan, organise, and oversee the work and assignments for the Group. 
• Foster a collaborative environment which provides support, guidance, and development opportunities for staff members.
• Articulate a vision for the group and follow up with strategic guidance to ensure that everyone in the group can deliver at the highest possible level.
• Conduct the annual performance management and development process – including salary setting and negotiation – for your direct reporting team members.
• Deliver electrical engineering support to ensure assure high availability of accelerator components and subsystems. 
• Provide expert advice on electrical engineering and power distribution for the accelerator including EMI related issues. 
• Identify and implement effective solutions to safely perform the group’s work.  
• Support the Accelerator Division Management on the planning and execution of the sub-project.  
• Perform maintenance and shutdown work for the accelerator. 
• Plan and execute agreed support for other ESS sub-projects. 
• Manage contracts for supporting functions. 

This is a permanent, full-time position based on-site at the ESS campus in Lund, Sweden. 

About you: 

For this role, we are seeking an experienced, motivated leader with a technical and strategic mindset who can manage a diverse and multidisciplinary group whilst inspiring collaboration and high performance. Your expertise and experience in engineering within electrical systems, and technical project management make you highly suited to this role. Prior experience of line managing a team of engineers and technical experts will be a definite advantage should you wish to take on this new opportunity.

As the ideal candidate for this role, you need to have a higher university degree in electrical engineering or an equivalent education in combination with relevant experience. Experience from technical work performed at a large accelerator installation or infrastructure project would be a definite advantage. 

Being a line manager involves being able to articulate a vision and a strategy for the group that you will lead. Therefore, prior experience of strategic planning and of developing psychologically safe workplaces is very important. You need the proven ability to create an environment where all team members can experience success.  

We attach great importance to personality and attitude, so we are looking for someone with the excellent communication and interpersonal skills that are vital for effective collaboration with a diverse group of scientists, engineers, and technical staff within a multidisciplinary team. The working language of ESS is English, but the ability to speak Swedish or another European language would be beneficial.

To apply:

A career at ESS gives you the opportunity to contribute to the future discoveries within neutron science at a stunning, brand-new workplace filled with innovative minds and brilliant people from across the globe. We offer market competitive, individualised compensation which is differentiated according to role, responsibilities, individual skills, abilities and achievements as well as monthly pension contributions on top of your salary.

If you see yourself in what we’re looking for, please provide your CV and motivation letter in English by clicking on “apply” and following the instructions. Please be aware that we can only accept direct applications made via the ESS website. Submit your application as soon as you can and quote the job reference number ESD-56928 in your application.

This role requires additional background screening processes and health and safety checks, which will be performed during the recruitment process.

For further information regarding the position, please contact Talent Acquisition Specialist Daniel Nordin Baker on [email protected]

For trade union information, please contact Unionen representative Mikael Johansson on [email protected] or SACO/Swedish Association of Graduate Engineers representative Marc Kickulies at [email protected] Visa mindre

Digital Communications Officer

The European Spallation Source (ESS) is one of the largest science and technology infrastructure projects being built today. Our goal is to become the brightest source of neutrons for science and technology and be operational by the end of this decade. A state-of-the-art suite of neutron scattering instruments will be made available to address a wide range of scientific fields in fundamental and materials science. Powered by the world’s most advanced linea... Visa mer
The European Spallation Source (ESS) is one of the largest science and technology infrastructure projects being built today. Our goal is to become the brightest source of neutrons for science and technology and be operational by the end of this decade. A state-of-the-art suite of neutron scattering instruments will be made available to address a wide range of scientific fields in fundamental and materials science. Powered by the world’s most advanced linear proton accelerator, ESS will enable cutting-edge research in materials science, energy, health, and the environment for decades to come.

Join us in shaping the future of science - from the ground up.

About the role

As a major research infrastructure project within the European Union, ESS enjoys very strong interest from the public, media, industry the scientific community and other research facilities. To help us engage these audiences in our mission of being the most powerful accelerator-based neutron source in the world, we are looking for a forward-thinking and experienced Digital Communications Officer.

Reporting directly to the Head of Communications and Engagement, you will lead the development and management of ESS’ digital communication channels: websites, social media and newsletters. You will collaborate closely with colleagues in the team, as well as other relevant internal and external stakeholders to contribute to the development, implementation and evolution of a content strategy for all channels and key target groups.

Day-to-day, you will:


• Oversee overall content planning of the ESS website and current social media channels (LinkedIn, Instagram, and YouTube), in line with the ESS Communications and Engagement Strategy. 
• Provide strategic input towards future developments of existing and new digital channels, adapted to ESS priorities, audience characteristics and meeting international standards. 
• Develop and deliver high-quality written, photo, video and graphic content for ESS digital channels. 
• Lead the analysis of metrics across all digital channels, translating them into insights and KPI’s to inform strategic priorities and plans for communications and engagement at ESS. 
• Collaborate closely with a wide range of relevant stakeholders, both internally and externally, to source and develop content and new channels whenever relevant. 
• Manage relationships with the providers of systems, tools and infrastructure for digital channel management and content monitoring. 

This is a full-time, permanent position based at the ESS Campus in Lund, Sweden. 

About you: 

First and foremost, we need a team player who is suitably qualified and experienced in the field of content and digital channel management. This means that you will have a master's degree in communications science, digital media, digital marketing or science communication, as well as at least 3 years’ prior experience in a digital communications role in an established organisation. You must be a creative and forward-thinking digital communications professional with a passion for engaging audiences through cutting-edge tools and strategies.

You bring strong expertise in managing digital channels, producing high-quality multimedia content, and designing data-driven campaigns that align with organisational priorities. Your experience in the delivery of impactful content across platforms, measuring results, and continuously evolving strategies to optimise engagement gives you the insight needed to plan and structure your work independently, whilst at the same time being able to collaborate and deliver as a member of the team.

For this role, we need someone who is professionally fluent in written and spoken English, and who also has a good understanding of Swedish. Excellent writing skills are essential. Your ability to manage and create for digital platforms, including websites, social media, and newsletters, is complemented by a technical familiarity with tools such as content management systems (e.g. Drupal, WordPress), social media scheduling tools (e.g., Hootsuite, Buffer), and analytics platforms (e.g., Google Analytics, native social media reporting). Experience with SEO optimisation, graphic design software (e.g., Adobe Creative Suite), basic video editing tools (e.g., Premiere Pro, Final Cut), and working knowledge of HTML and CSS is highly desirable.

As an individual, you value diversity in every form and thrive in an international environment. You should enjoy navigating both the academic and industry worlds, identifying opportunities for effective and efficient communications. Believing in team delivery, you celebrate successes and embrace learnings together with your colleagues.

To apply:

A career at ESS gives you the opportunity to contribute to the future discoveries within neutron science at a stunning, brand-new workplace filled with innovative minds and brilliant people from across the globe. We offer market competitive, individualised compensation which is differentiated according to role, responsibilities, individual skills, abilities and achievements as well as monthly pension contributions on top of your salary.

If you see yourself in what we’re looking for, please provide your CV and motivation letter in English by clicking on “apply” and following the instructions. Please be aware that we can only accept direct applications made via the ESS website. Submit your application as soon as you can and quote the job reference number ESD-46901 in your application.

This role requires additional background screening processes and health and safety checks, which will be performed during the recruitment process.

For further information regarding the position, please contact Talent Acquisition Specialist Daniel Nordin Baker on [email protected] 

For trade union information, please contact Unionen representative Mikael Johansson on [email protected] or SACO/Swedish Association of Graduate Engineers representative Marc Kickulies at [email protected] Visa mindre

External Communications Officer

The European Spallation Source (ESS) is one of the largest science and technology infrastructure projects being built today. Our goal is to become the brightest source of neutrons for science and technology and be operational by the end of this decade. A state-of-the-art suite of neutron scattering instruments will be made available to address a wide range of scientific fields in fundamental and materials science. Powered by the world’s most advanced linea... Visa mer
The European Spallation Source (ESS) is one of the largest science and technology infrastructure projects being built today. Our goal is to become the brightest source of neutrons for science and technology and be operational by the end of this decade. A state-of-the-art suite of neutron scattering instruments will be made available to address a wide range of scientific fields in fundamental and materials science. Powered by the world’s most advanced linear proton accelerator, ESS will enable cutting-edge research in materials science, energy, health, and the environment for decades to come.

Join us in shaping the future of science - from the ground up.

About the role:

As a major research infrastructure project within the European Union, ESS enjoys very strong interest from the scientific community, the public, media, industry and other research facilities. You will lead ESS’ participation in communicating with these and other audiences, working in collaboration with key internal and external stakeholders to ensure the success of communications projects and initiatives as per ESS Communications and Engagement Strategies and plans.

Reporting directly to the Head of Communications and Engagement, you will collaborate closely with colleagues in the team as well as other relevant stakeholders.

Day-to-day, you will:


• Strategically establish, develop, and nurture relevant external communications relations locally, regionally, and internationally to address ESS’ external communication needs, in line with the ESS Communication and Engagement Strategy.
• Curate and nurture relations with key external stakeholders, including managing enquiries from other research organisations, In-Kind partners, suppliers, the public, and - in particular – media.
• Provide strategic input into ESS messaging and secure consistency across all channels and activities.
• Monitor and analyse perceptions of ESS in external environments, translating these into insights that will inform strategic plans and priorities.
• Lead on all media relations locally, nationally and internationally, to ensure alignment with ESS communication and engagement priorities.
• Act as the point of contact for the execution of external communication projects and initiatives.
• Produce content for a variety of external communication projects and initiatives across a variety of channels and formats.
• Identify and manage suppliers of tools and technical infrastructure that track the progress of external communications, e.g. media coverage and references from other stakeholders.
• Participate in the development and maintenance of the ESS Crisis Communications plan, which will include training colleagues as well as participating in both internal and external crisis planning exercises and establishing a network with the relevant regional and national authorities.

This is a full-time, permanent position based at the ESS Campus in Lund, Sweden.

About you:

First and foremost, we need a team-player who is suitably qualified and experienced in the field of Communications and External Relations. You therefore need to have a Master’s degree in communications science, public relations, journalism, media, marketing or communication studies as well as at least 5 years prior experience of communications or media relations, including at national, international and strategic levels. You must have significant, prior experience in external and media relations in Sweden - preferably within an international organisation - as well as a demonstrated network of professional contacts within the Swedish media landscape. A good understanding of media related to science, technology, innovation, and sustainability is essential.

For this role, we need someone who is professionally fluent in written and spoken Swedish and English, and who has excellent writing skills for public relations and media purposes. You should have the capability to build and maintain strong relationships and networks with key stakeholders both internally and externally. The ability to independently plan and structure your work while effectively collaborating as a member of the Communications and Engagement Team is crucial. Sharing competence and creating learning opportunities for yourself, the team and the organisation should be a natural part of your work ethic.

As an individual, you value diversity in every form and thrive in an international environment. You should enjoy navigating both the academic and corporate worlds, identifying opportunities for effective and efficient communications. Believing in team delivery, you celebrate successes and embrace learnings together with your colleagues.

To apply:

A career at ESS gives you the opportunity to contribute to the future discoveries within neutron science at a stunning, brand-new workplace filled with innovative minds and brilliant people from across the globe. We offer market competitive, individualised compensation which is differentiated according to role, responsibilities, individual skills, abilities and achievements as well as monthly pension contributions on top of your salary.

If you see yourself in what we’re looking for, please provide your CV and motivation letter in English by clicking on “apply” and following the instructions. Please be aware that we can only accept direct applications made via the ESS website. Submit your application as soon as you can and quote the job reference number ESD-46900 in your application.

This role requires additional background screening processes and health and safety checks, which will be performed during the recruitment process.

For further information regarding the position, please contact Talent Acquisition Specialist Daniel Nordin Baker on [email protected] 

For trade union information, please contact Unionen representative Mikael Johansson on [email protected] or SACO/Swedish Association of Graduate Engineers representative Marc Kickulies at [email protected] Visa mindre

Instrument Scientist for BIFROST

The European Spallation Source (ESS) is a partnership organization of 13 European member countries located in the city of Lund, Sweden. The ESS is hiring motivated and inspiring people from across the globe to design, construct and operate the world’s most powerful neutron source. We seek collaborative, talented people in a range of fields who are excited about playing a part in the future of science in Europe. About the role: The ESS is at an exciting t... Visa mer
The European Spallation Source (ESS) is a partnership organization of 13 European member countries located in the city of Lund, Sweden. The ESS is hiring motivated and inspiring people from across the globe to design, construct and operate the world’s most powerful neutron source. We seek collaborative, talented people in a range of fields who are excited about playing a part in the future of science in Europe.

About the role:

The ESS is at an exciting turning point. It is in transition from being a construction site, to being an operating facility. To help us realise our goal of being the most powerful neutron material research facility in the world, we are seeking to appoint an Instrument Scientist to join the Spectroscopy Division within the Science Directorate at ESS. You will work as an instrument scientist on the BIFROST instrument, an extreme environment cold spectrometer, with tasks that include:

Within the Bifrost team


• Ensure the successful completion of the Bifrost instrument project in close collaboration with the Bifrost team;
• Focus on the installation of sample environment, detector capabilities and data curation and analysis;
• Drive the instrument through cold and hot commissioning plans and into First Science;
• In the future - develop the operation in collaboration with the user community.

Within the spectroscopy division there are opportunities to


• Perform the planning, design, and evaluation of future instrumentation concepts through calculations, simulations and test-experiments.

Within the Science directorate you will be expected to


• Contribute to the development of relevant ESS support facilities and infrastructure.

As an instrument scientist we expect you to


• Conduct scientific or technical research and author scientific or technical publications;
• Establish and maintain constructive contacts with universities, laboratories and other relevant actors;
• Take part in peer review of scientific publications, grant proposals, research, and facilities;
• Represent ESS at appropriate conferences and workshops;
• Present scientific and technical research at the relevant conferences and workshops, and in seminars and lectures;
• Engage with the scientific community through involvement in standards groups, conference organization and professional bodies as appropriate;
• Supervise post docs and students and participate in teaching activities, as appropriate.

About you:

To thrive with us in the Spectroscopy Division, you need to be a self-motivated person who is keen to support an instrument team in order to get it ready for first neutrons. You should be a ‘hands-on’ person who is open to learn new things along the way.

First and foremost, we need someone who is suitably qualified and experienced. Ideally, this means a PhD in physical, chemical or materials sciences with research interests and a publication record aligned with the science case of the BIFROST instrument. Experience and technical interest in instrumentation and spectroscopy, preferably using time of flight techniques is a prerequisite for this role.

Any additional prior experience or knowledge working with neutron scattering instrumentation, data treatment and modelling at a level sufficient to guide the development of instrument specific software, programming experience - preferably in Python - or experience with neutron optics and Monte Carlo ray tracing simulations would be a distinct advantage. 

We are building ESS from the ground up, so we need someone who is comfortable not only following procedures, but also creating them. We attach great importance to personality and attitude, so we're looking for a real team player: Someone who is sociable, has excellent communication skills, who likes to collaborate with different people and who is committed to helping this amazing project to realise its full potential. We need a hands-on self-starter who is able to work in a structured, orderly, responsible and – most importantly – safe way.

The working language of ESS is English but it would be great if you could also work in Swedish as well. For this role, we need someone who can start as soon as possible!

What can we offer?

Aside from the chance to work at truly unique big science project, you can also expect:


• An opportunity to contribute to the future discoveries within neutron science.
• Full relocation support if not already based in Sweden.
• A stunning, brand new workplace filled with innovative minds and brilliant people from across the globe.
• A challenging, innovative and stimulating work environment.
• Market competitive compensation that is individual and differentiated according to role, responsibilities, individual skills, abilities and achievements.
• 30 days of annual leave, as well as more than 10 days of public holiday and company days off or days with limited working hours.
• Monthly pension contributions on top of your salary.
• Flexible working arrangements and a real work-life balance.

If you see yourself in what we’re looking for, please provide your CV and motivation letter in English by clicking on “apply” and following the instructions. Please be aware that we can only accept direct applications made via the ESS website.

Certain roles at ESS require health and safety checks and/or security clearance procedures, which will be performed as part of the recruitment process.

Duration & Location

The position is a 3 year fixed-term, full-time position located in Lund, Sweden.

Application & Contact

Please provide your CV in English by clicking on “apply” and following the instructions.

The closing date for this position is 17 October 2025.

For further information please contact the Division Head for Spectroscopy Pascale Deen, [email protected].


For further information regarding the recruitment process, please contact Recruitment Partner, Kate Quaak, [email protected].

For trade union information, please contact Unionen representative Mikael Johansson at [email protected] or SACO/Swedish Association of Graduate Engineers representative Marc Kickulies at [email protected]

 

We look forward to receiving your application! Visa mindre

Electrical Systems and Maintenance Services Group Leader

The European Spallation Source (ESS) is one of the largest science and technology infrastructure projects being built today. Our goal is to become the brightest source of neutrons for science and technology and be operational by the end of this decade. A state-of-the-art suite of neutron scattering instruments will be made available to address a wide range of scientific fields in fundamental and materials science. Powered by the world’s most advanced linea... Visa mer
The European Spallation Source (ESS) is one of the largest science and technology infrastructure projects being built today. Our goal is to become the brightest source of neutrons for science and technology and be operational by the end of this decade. A state-of-the-art suite of neutron scattering instruments will be made available to address a wide range of scientific fields in fundamental and materials science. Powered by the world’s most advanced linear proton accelerator, ESS will enable cutting-edge research in materials science, energy, health, and the environment for decades to come.

Join us in shaping the future of science - from the ground up.

About this role

As we continue our transition into Steady State Operations, ESS is now looking for a motivated and experienced Group Leader to head our Electrical Systems and Maintenance Services group. In this key role within the Operations Division, you will oversee the operation, maintenance, and compliance of ESS's electrical distribution systems, including low and high voltage networks.

As a group leader, you will be assigned ESS electrical leader and electrical operations leader roles. You will also be part of defining plans for a long-term electrical compliance at ESS. Additionally, you will be responsible for preparing and executing long term plan to grow the group to provide electrical maintenance central services to the rest of the ESS organisation.

This hands-on technical and people leadership role requires a certified and experienced electrician with a deep knowledge of electrical systems, ideally including high voltage expertise. You will be instrumental in leading ESS's electrical operations efforts while planning and implementing strategic initiatives such as compliance frameworks and the further development of on-call support systems.

Day-to-day, you will:


• Manage a diverse team of professionals to provide electrical maintenance services to the ESS organisation as well.
• Ensure electrical systems are reliable and compliant, providing uninterrupted services to the demanding technical and scientific operations of ESS.
• Ensure the operational readiness and maintenance of ESS's electrical distribution systems (low, medium and high voltage) according to required specifications and safety standards.
• Ensure sufficient and proficient electrical maintenance services for the rest of the organisation.
• Organise and lead the work of the group members, acting as the line manager for your team. This includes setting goals, leading performance evaluations, managing training programs, and hiring as needed to grow group capacity.
• Act as ESS's electrical lead and electrical operations leader, taking ownership of development and oversight for procedures for working with electrical systems.
• Develop and execute a plan to ensure ESS meets all relevant electrical compliance requirements over time.
• Provide maintenance services to technical teams across the Machine and Science Directorates ..
• Manage external contracts for maintenance technician services and additional capacity to support ESS teams.
• Organise maintenance tasks performed by both group members and contractors, coordinating with the central work coordination and planning team and Control Room Operations teams to prioritize and execute activities efficiently.
• Improve and develop the on-call setup for the group by cross-training team members.
• Ensure the right competencies are in place to support safe and efficient operations.
• Organise and drive system ownership hand over from project deliveries to operational systems.
• Keep maintenance contracts up to date as required.

About you

For this role, we need a suitably qualified and experienced person. Ideally, you are an experienced, certified electrician with a passion for people leadership and a strong desire to build a collaborative team environment. You bring expertise in electrical systems and maintenance services, with a solid understanding of both low and high voltage distribution systems. Prior, demonstrable experience of leading operations, managing compliance, and ensuring system reliability would make you an ideal candidate for this role.

As a skilled problem-solver, you are someone who excels at managing day-to-day operations while planning strategically for the future. With experience in managing teams, handling contracts, and collaborating with diverse stakeholders, you must be able to effectively balance immediate priorities with long-term goals. Your technical insight and leadership ability inspire those around you to deliver their best work in a fast-paced, safety-focused environment.

As an Electrical Group Leader, you will have the opportunity to play a pivotal role in ensuring that one of the world’s foremost research facilities operates at the highest standards across its electrical systems. Strong interpersonal and communication skills define your approach to building highly functional teams as they allow you to interact effectively with technical systems teams and management stakeholders. You therefore need to have the organisational mindset needed to contribute to – or develop – structured workflows and documentation to optimise operational processes.

The working language of ESS is English, but the ability to speak another European language would be an advantage.

To apply:

At ESS, we offer market competitive, individualised compensation which is differentiated according to role, responsibilities, individual skills, abilities and achievements as well as monthly pension contributions on top of your salary.

If you see yourself in what we’re looking for, please provide your CV and motivation letter in English by clicking on “apply” and following the instructions. Please be aware that we can only accept direct applications made via the ESS website. Submit your application as soon as you can and quote the job reference number ESD-72338 in your application.

This role requires additional background screening processes and health and safety checks, which will be performed during the recruitment process.

For further information regarding the position, please contact Talent Acquisition Specialist Daniel Nordin Baker on [email protected]

For trade union information, please contact Unionen representative Mikael Johansson on [email protected] or SACO/Swedish Association of Graduate Engineers representative Marc Kickulies at [email protected] Visa mindre

Mechanical Systems and Maintenance Services Group Leader

The European Spallation Source (ESS) is one of the largest science and technology infrastructure projects being built today. Our goal is to become the brightest source of neutrons for science and technology and be operational by the end of this decade. A state-of-the-art suite of neutron scattering instruments will be made available to address a wide range of scientific fields in fundamental and materials science. Powered by the world’s most advanced linea... Visa mer
The European Spallation Source (ESS) is one of the largest science and technology infrastructure projects being built today. Our goal is to become the brightest source of neutrons for science and technology and be operational by the end of this decade. A state-of-the-art suite of neutron scattering instruments will be made available to address a wide range of scientific fields in fundamental and materials science. Powered by the world’s most advanced linear proton accelerator, ESS will enable cutting-edge research in materials science, energy, health, and the environment for decades to come.

Join us in shaping the future of science - from the ground up.

About the role:

As we continue our transition into Steady State Operations, ESS is now looking to appoint a skilled and proactive Group Leader to head our Mechanical Systems and Maintenance Services group within the Operations Division. In this critical role, you will oversee the operation, maintenance, and development of mechanical systems – including water cooling, HVAC, and instrument air systems – to ensure their reliable functionality and compliance with required specifications.

As Group Leader, you will oversee of mechanical system operations while providing maintenance services to technical teams that support ESS’s cutting-edge scientific mission. You will manage a team of professionals, lead external contractor agreements, ensure seamless interfacing with other technical systems, and develop forward-looking operational frameworks such as the group’s on-call system. This leadership role offers a dynamic opportunity to contribute to one of the world’s foremost research facilities in a highly collaborative and multidisciplinary environment.

Day-to-day, you will:


• Organise and lead the work of the group members, acting as the line manager for your team. This includes setting goals, leading performance evaluations, managing training programs, and hiring as needed to grow group capacity.
• Ensure the operational readiness and maintenance of ESS’s mechanical systems – including water cooling, HVAC, and instrument air systems – so they meet specified requirements and safety standards.
• Take responsibility for operation, reliability, and maintenance of the systems in the scope of the group to ensure that they interface seamlessly with other technical systems.
• Provide maintenance services to technical teams across the Machine and Science Directorates, coordinating efforts to meet diverse operational demands.
• Manage external contracts for maintenance technician services and additional capacity to provide effective support for ESS teams.
• Organise maintenance tasks carried out by group members and contractors, coordinating closely with the central work coordination and planning team and Control Room Operations teams to prioritise and execute work efficiently.
• Improve and develop the on-call setup for the group by cross-training team members.
• Ensure the right competencies are in place to support safe and efficient operations.
• Organise and drive system ownership hand over from project deliveries to operational systems
• Keep maintenance contracts up to date as required.

About you

For this role, we need a suitably qualified and experienced person. Ideally, you are an experienced leader with a strong technical background in mechanical systems, including water cooling, HVAC, or pressurised air systems, and a proven ability to maintain and operate large-scale infrastructure. As a Group Leader, you bring both technical expertise and team management skills to foster a collaborative work environment while ensuring the operational readiness of critical systems.

As a skilled problem-solver, you are someone who excels at managing day-to-day operations while planning strategically for the future. With experience in managing teams, handling contracts, and collaborating with diverse stakeholders, you must be able to effectively balance immediate priorities with long-term goals. Your technical insight and leadership ability inspire those around you to deliver their best work in a fast-paced, safety-focused environment.

As Mechanical Systems Group Leader, you will have the opportunity to play a pivotal role in ensuring that one of the world’s foremost research facilities operates at the highest standards across its critical mechanical systems. Strong interpersonal and communication skills define your approach to building highly functional teams as they allow you to interact effectively with technical systems teams and management stakeholders. You therefore need to have the organisational mindset needed to contribute to – or develop – structured workflows and documentation to optimise operational processes.

The working language of ESS is English, but the ability to speak another European language would be an advantage.

To apply:

At ESS, we offer market competitive, individualised compensation which is differentiated according to role, responsibilities, individual skills, abilities and achievements as well as monthly pension contributions on top of your salary.

If you see yourself in what we’re looking for, please provide your CV and motivation letter in English by clicking on “apply” and following the instructions. Please be aware that we can only accept direct applications made via the ESS website. Submit your application as soon as you can and quote the job reference number ESD-72339 in your application.

This role requires additional background screening processes and health and safety checks, which will be performed during the recruitment process.

For further information regarding the position, please contact Talent Acquisition Specialist Daniel Nordin Baker on [email protected]

For trade union information, please contact Unionen representative Mikael Johansson on [email protected] or SACO/Swedish Association of Graduate Engineers representative Marc Kickulies at [email protected] Visa mindre

Instrument Operations Engineer for HEIMDAL

The European Spallation Source is one of the largest science and technology infrastructure projects being built today. The project includes the most powerful linear proton accelerator ever built, a five-tonne, helium-cooled tungsten target wheel, state-of-the-art neutron instruments, a suite of laboratories, and a data management and software development centre. It is a brand-new Big Science organisation and we are building it from the ground up. The ESS ... Visa mer
The European Spallation Source is one of the largest science and technology infrastructure projects being built today. The project includes the most powerful linear proton accelerator ever built, a five-tonne, helium-cooled tungsten target wheel, state-of-the-art neutron instruments, a suite of laboratories, and a data management and software development centre. It is a brand-new Big Science organisation and we are building it from the ground up.

The ESS will be a user facility, welcoming researchers from around the world to perform experiments using the neutron instruments and associated facilities. We currently expect to have first neutron production in 2026 and welcome our first external users in 2027.

We are now looking for an Instrument Operations Engineer for the HEIMDAL instrument. The position is with the Diffraction & Imaging Division.

About the division

The Diffraction & Imaging Division consists of the scientific staff that are leading the instrument construction projects and the staff that will eventually execute the day-to-day operations of six neutron instruments. The upcoming responsibilities of the division are


• Finalize installation of the instruments
• Plan and implement further developments and upgrades of the instruments
• Commissioning of the instruments, both with and without neutrons
• Deliver state-of-the-art scientific capabilities for internal and external users to enable the wider science community to advance science and technology

About the role

As an Instrument Operations Engineer you will:


• Join a team of scientists, engineers, and technicians aiming to prepare a neutron instrument for first user operation and beyond
• Collaborate closely with engineers and technicians in specialist disciplines at ESS

Between now and the start of commissioning with neutrons (“hot commissioning”):


• Prepare, execute, and document test plans for instrument components (“cold commissioning), working with the instrument scientist and engineer and in liaison with staff in specialist disciplines
• Support the instrument scientists in preparing safety documentation, including standard operating procedures and operations manuals for an instrument.
• Prepare for and participate in commissioning experiments at other facilities to test components for an instrument (e.g. testing of sample environment equipment)
• Participate in the mechanical design and realization of modifications to an instrument required during installation and testing

After the start of hot commissioning:


• Support the instrument scientists in preparing, executing and documenting testing of an instrument with neutrons (“hot commissioning”)
• Plan, manage and/or execute scheduled and unscheduled maintenance of the instrument
• Act as the system owner for an instrument, keeping the maintenance records and engineering documentation up to date with changes.

• Responsiblity for instrument specific components
• Coordination with specialized technology groups (Choppers, Detectors, Motion Control, etc.) and support teams (vacuum, rigging, survey and alignment)
• Working with operational groups (Hall Coordinators, ESH, Control Room Operators)

• Participate in the mechanical design and realization of upgrades for an instrument
• Support user experiments on the instrument by e.g. building mechanical and/or electrical support systems in the in-house workshop, and helping to set-up sample environments, this includes:

• Writing and Review of Experiment Hazard Analyses
• Providing assistance in sample mounting
• Setting up of instrument configurations
• Assisting in user experiments, including training users on instrument operations


About you

We are looking for a self-motivated person who is keen to support an instrument team in order to get it ready for first neutrons. You should be a ‘hands-on’ person and open to learn new things along the way. You will have: 


• A bachelor’s or masters degree in Engineering or the Physical Sciences, or equivalent technical experience
• Experience in the hands-on management of complex technical equipment
• Excellent communication and interpersonal skills to be able to interact effectively with a diverse group of scientists, engineers, and technical staff
• Excellent oral and written English skills

Physical requirements for this job include the use of hand, eye and ear protection gear, stooping, kneeling, lifting, and sitting or standing for extended periods of time.

It would be beneficial if you will also have:


• Experience with neutron scattering experiments
• Practical experience with high magnetic field equipment
• Experience with the development, operation, and maintenance of complex scientific equipment
• Ability to perform simple mechanical design (CAD) and work with designers
• Knowledge of other European languages would be an advantage
• Experience in programming (python, Matlab, C++ or similar)
• Experience working in an international research environment

We are building ESS from the ground up, so we need someone who is comfortable not only following procedures, but also creating them. We attach great importance to personality and attitude, so we're looking for a real team player: Someone who is sociable, has excellent communication skills and who likes to collaborate with different people.

Duration & Location

The position is a 3 year fixed term role and the workplace will be situated in Lund, Sweden. Travelling is expected if the need arises.

Application & Contact

Please provide your curriculum vitae and cover letter in English by clicking on “apply” and following the instructions. Note that we only accept applications via the ESS website or ESS intranet. Internal candidates are encouraged to apply through the intranet. We accept candidates into the recruitment process continuously, so please do not hesitate to apply. This position will remain open until a suitable candidate has been found.

Certain roles at ESS require health and safety checks and/or security clearance procedures, which will be performed as part of the recruitment process.

For further information regarding the position, please contact Mikhail Feygenson, Head of Diffraction and Imaging Division, [email protected]

For more information about the recruitment process, please contact Kathryn Quaak, HR Officer, [email protected]

We look forward to receiving your application soon! Visa mindre

Chief of Staff

The European Spallation Source (ESS) is poised to become Europe’s flagship neutron research facility, advancing material science with cutting-edge technology. ESS will enable groundbreaking experiments to deepen our understanding of matter and tackle pressing global challenges in energy, health, and the environment. As a European Research Infrastructure Consortium (ERIC) uniting 13 member states, ESS is completing its construction phase and transitioning t... Visa mer
The European Spallation Source (ESS) is poised to become Europe’s flagship neutron research facility, advancing material science with cutting-edge technology. ESS will enable groundbreaking experiments to deepen our understanding of matter and tackle pressing global challenges in energy, health, and the environment. As a European Research Infrastructure Consortium (ERIC) uniting 13 member states, ESS is completing its construction phase and transitioning to full user operations by late 2027. To drive this transformative journey, we are seeking an experienced and dynamic Chief of Staff to work closely with the ESS Director General and to lead the ESS Executive Office.

About this role:
This is a new role at ESS. As Chief of Staff, you will report directly to the Director General where you will play a central role in driving ESS’s strategic priorities within ESS’s commitment to create impact through performance built on collaboration. You will lead the Executive Office, which integrates the Governance and Compliance Office.

You will act as a trusted advisor and partner to the DG, supporting the formulation and execution of organizational goals, enabling cross-departmental collaboration, and ensuring operational oversight and follow-through on critical initiatives. Additionally, you will serve as a primary interface with ESS member states and other stakeholders, fostering strong relationships while maintaining oversight of risk management, governance, and policy development.

As ESS transitions from its construction phase to full user operations, the scope of this role will naturally adapt requiring a close alignment with the Project Directorate during the transition period.

Key Responsibilities:

The Chief of Staff leads the Executive Office, including direct line-management of key staff within the Governance and Compliance Offices. These functional areas are critical for maintaining effective governance, ensuring regulatory compliance, and managing risks. The Chief of Staff will ensure their seamless integration and alignment with ESS’s strategic goals.

1. Strategic Planning and Decision-Making Support:


• Collaborate with the Director General and the Executive Board on the development, refinement, and execution of our strategic vision.
• Enable data-driven decision-making by performing thorough analyses and presenting actionable options for achieving strategic goals; provide risk-benefit evaluations when necessary.
• Define and execute ESS’s Operations and Development Plan, including resource allocation, budget preparation and staffing.

2. Programme and Initiative Oversight:


• Implement and monitor progress on major strategic initiatives and projects, ensuring they remain on track.
• Facilitate resource management, evaluate risks, and resolve issues that could hinder successful delivery of high-priority projects.

3. Operational Oversight:


• Ensure alignment between the organization’s strategic priorities and operational delivery, tracking progress, identifying obstacles, and driving action.
• Assume the responsibility and authority to monitor, manage, and improve processes within the organization. This includes:

• Developing and implementing organizational policies and workflows within the ESS Integrated Management System (IMS) to ensure efficiency and compliance.
• Managing performance frameworks and risk management systems.



4. Governance Support:


• Ensure the smooth interaction and collaboration between ESS leadership and its governance bodies (e.g., Council, advisory committees).
• Provide support for governance processes, decision follow-ups, and administrative coordination.

5. Stakeholder Management:


• Foster productive relationships with key external stakeholders, including ministries, funding agencies and the European Commission.
• Help ESS fulfil its obligations and maintain presence in critical international scientific and policy networks like ESFRI, LENS, ERIC Forum, and EIROforum

About you:
Your leadership will reflect a balance of technical expertise, operational discipline, and strategic foresight, ensuring that ESS meets its scientific and societal goals. You will be a trusted advisor to the Director General and a key driver of innovation, collaboration, and excellence across the organisation. Therefore, we are seeking an experienced and rigorous leader who can bring:


• An advanced degree in Public Administration, International Relations, Business, Organisational Development, Law, or a related discipline.
• Extensive leadership experience in senior advisory, managerial, or operational roles, preferably within complex international organizations.
• The demonstrable, proven ability to operationalise strategic plans and lead cross-functional teams toward achieving measurable outcomes in line with expectations.
• Demonstrated expertise in change management, governance, compliance, and policy frameworks, with a proven track record of enhancing organisational efficiency.
• Strong organizational and analytical capabilities, coupled with an energetic, results-driven personality.
• Exceptional interpersonal and communication skills, with the ability to engage effectively across hierarchical and cultural contexts.
• Sensitivity to balancing compliance and governance responsibilities with operational demands.
• The flexibility and adaptability required to build rapport with successive leadership teams to maintain organisational continuity during transitions.

ESS is an English language workplace. Therefore, fluency in English with excellent communication and interpersonal skills is essential. Knowledge of Swedish or other European languages would be an advantage.

This is a permanent position with a 6-month probationary period and your workplace will be in Lund, Sweden.

To Apply:
To request a full information packet about this prestigious appointment, please contact Eva Nielsen via [email protected]


If you see yourself in this role, please submit your CV and motivation letter in English by clicking on "apply" and following the instructions. We can only accept direct applications made via the ESS website, so submit your application as soon as possible. Please quote the job reference number ESD-71052 in your application.

This role requires health and safety checks as well as enhanced security clearance procedures, which will be performed as part of the recruitment process.

We look forward to receiving your application soon. Visa mindre

Instrument Operations Engineer for MAGiC

The European Spallation Source is one of the largest science and technology infrastructure projects being built today. The project includes the most powerful linear proton accelerator ever built, a five-tonne, helium-cooled tungsten target wheel, state-of-the-art neutron instruments, a suite of laboratories, and a data management and software development centre. It is a brand-new Big Science organisation and we are building it from the ground up. The ESS ... Visa mer
The European Spallation Source is one of the largest science and technology infrastructure projects being built today. The project includes the most powerful linear proton accelerator ever built, a five-tonne, helium-cooled tungsten target wheel, state-of-the-art neutron instruments, a suite of laboratories, and a data management and software development centre. It is a brand-new Big Science organisation and we are building it from the ground up.

The ESS will be a user facility, welcoming researchers from around the world to perform experiments using the neutron instruments and associated facilities. We currently expect to have first neutron production in 2026 and welcome our first external users in 2027.

We are now looking for an Instrument Operations Engineer for the MAGiC instrument. The position is with the Diffraction & Imaging Division.

About the division

The Diffraction & Imaging Division consists of the scientific staff that are leading the instrument construction projects and the staff that will eventually execute the day-to-day operations of six neutron instruments. The upcoming responsibilities of the division are


• Finalize installation of the instruments
• Plan and implement further developments and upgrades of the instruments
• Commissioning of the instruments, both with and without neutrons
• Deliver state-of-the-art scientific capabilities for internal and external users to enable the wider science community to advance science and technology

About the role

As an Instrument Operations Engineer you will:


• Join a team of scientists, engineers, and technicians aiming to prepare a neutron instrument for first user operation and beyond
• Collaborate closely with engineers and technicians in specialist disciplines at ESS

Between now and the start of commissioning with neutrons (“hot commissioning”):


• Prepare, execute, and document test plans for instrument components (“cold commissioning), working with the instrument scientist and engineer and in liaison with staff in specialist disciplines
• Support the instrument scientists in preparing safety documentation, including standard operating procedures and operations manuals for an instrument.
• Prepare for and participate in commissioning experiments at other facilities to test components for an instrument (e.g. testing of sample environment equipment)
• Participate in the mechanical design and realization of modifications to an instrument required during installation and testing

After the start of hot commissioning:


• Support the instrument scientists in preparing, executing and documenting testing of an instrument with neutrons (“hot commissioning”)
• Plan, manage and/or execute scheduled and unscheduled maintenance of the instrument
• Act as the system owner for an instrument, keeping the maintenance records and engineering documentation up to date with changes.

• Responsiblity for instrument specific components
• Coordination with specialized technology groups (Choppers, Detectors, Motion Control, etc.) and support teams (vacuum, rigging, survey and alignment)
• Working with operational groups (Hall Coordinators, ESH, Control Room Operators)

• Participate in the mechanical design and realization of upgrades for an instrument
• Support user experiments on the instrument by e.g. building mechanical and/or electrical support systems in the in-house workshop, and helping to set-up sample environments, this includes:

• Writing and Review of Experiment Hazard Analyses
• Providing assistance in sample mounting
• Setting up of instrument configurations
• Assisting in user experiments, including training users on instrument operations


About you

We are looking for a self-motivated person who is keen to support an instrument team in order to get it ready for first neutrons. You should be a ‘hands-on’ person and open to learn new things along the way. You will have: 


• A bachelor’s or masters degree in Engineering or the Physical Sciences, or equivalent technical experience
• Experience in the hands-on management of complex technical equipment
• Excellent communication and interpersonal skills to be able to interact effectively with a diverse group of scientists, engineers, and technical staff
• Excellent oral and written English skills

Physical requirements for this job include the use of hand, eye and ear protection gear, stooping, kneeling, lifting, and sitting or standing for extended periods of time.

It would be beneficial if you will also have:


• Experience with neutron scattering experiments
• Practical experience with high magnetic field equipment
• Experience with the development, operation, and maintenance of complex scientific equipment
• Ability to perform simple mechanical design (CAD) and work with designers
• Knowledge of other European languages would be an advantage
• Experience in programming (python, Matlab, C++ or similar)
• Experience working in an international research environment

We are building ESS from the ground up, so we need someone who is comfortable not only following procedures, but also creating them. We attach great importance to personality and attitude, so we're looking for a real team player: Someone who is sociable, has excellent communication skills and who likes to collaborate with different people.

Duration & Location

The position is a 3 year fixed term role and the workplace will be situated in Lund, Sweden. Travelling is expected if the need arises.

Application & Contact

Please provide your curriculum vitae and cover letter in English by clicking on “apply” and following the instructions. Note that we only accept applications via the ESS website or ESS intranet. Internal candidates are encouraged to apply through the intranet. We accept candidates into the recruitment process continuously, so please do not hesitate to apply. This position will remain open until a suitable candidate has been found.

Certain roles at ESS require health and safety checks and/or security clearance procedures, which will be performed as part of the recruitment process.

For further information regarding the position, please contact Mikhail Feygenson, Head of Diffraction and Imaging Division, [email protected]

For more information about the recruitment process, please contact Kathryn Quaak, HR Officer, [email protected]

We look forward to receiving your application soon! Visa mindre

Engineering and Infrastructure Director

The European Spallation Source (ESS) is poised to become Europe’s flagship neutron research facility, advancing the field of material science using cutting-edge technology. ESS will enable groundbreaking experiments that deepen our understanding of matter and address some of the most pressing global challenges in energy, health, and the environment. As a European Research Infrastructure Consortium (ERIC) uniting 13 member states, ESS is completing its cons... Visa mer
The European Spallation Source (ESS) is poised to become Europe’s flagship neutron research facility, advancing the field of material science using cutting-edge technology. ESS will enable groundbreaking experiments that deepen our understanding of matter and address some of the most pressing global challenges in energy, health, and the environment. As a European Research Infrastructure Consortium (ERIC) uniting 13 member states, ESS is completing its construction phase and transitioning towards full user operations by the end of 2027. We are now seeking an experienced and dynamic Engineering & Infrastructure Director to play a pivotal role in this transformative journey.

Your role:

The ESS organisation is managed by the Director General and its Executive Board of Directors. As of August 2025, ESS has four directorates: Science, Administration, Project and the Operations & Machine Directorate. We will now add a fifth directorate into our organisational structure, which will be called the Engineering and Infrastructure (EID) Directorate. The Engineering and Infrastructure Directorate provides strategic and operational support to ESS through centralised engineering and integration services, information technology, and facility management. At a later stage it is anticipated that the Directorate will also oversee programme and project management.

You will report directly to the Director General and, as a member of the Executive Board, will contribute to the strategic and operational leadership of ESS. As such, your key responsibilities will include, but are not limited to:


• Providing strategic direction for the Engineering and Infrastructure Directorate to ensure its functions support both the end of the current project phase and future long-term steady-state operations.
• Developing and implementing long-term strategies to maintain and enhance the ESS engineering capabilities, IT infrastructure, and facility management services.
• Ensuring that ESS maintains a high level of multi-disciplinary engineering expertise that addresses both design and field engineering aspects.
• Ensuring the delivery of effective integration services across the facility.
• Ensuring ESS has the necessary software tools, digital infrastructure, security, and governance to support business and technical operations and scientific research.
• Driving initiatives to enhance operational efficiency, sustainability, and safety across the Directorate.
• Managing key stakeholder relationships, including governance bodies, technical advisory committees, and external partners as appropriate.
• Driving effective resource allocation.
• Leading a team of senior managers to ensure alignment with ESS’s performance goals and strategic objectives.
• Championing a culture of accountability and continuous improvement.

Working at ESS means contributing to one of the most exciting scientific ventures in Europe. You’ll have the opportunity to shape the future of material science using neutrons while addressing critical societal challenges. We offer a collaborative and inclusive workplace in a vibrant, international city known for its rich history and innovation culture.

The position is a 5-year assignment, with the option to renew for a second 5-year term by mutual agreement. Your workplace will be in Lund, Sweden, and full relocation support - including securing work authorisation - is provided if required.

About you:

Your leadership will reflect a balance of technical expertise, operational discipline, and strategic foresight, ensuring that ESS meets its scientific and societal goals. You will be a trusted advisor to the Director General and a key driver of innovation, collaboration, and excellence across the organisation. Therefore, we are seeking an experienced and rigorous leader who can bring:


• A master’s degree (or higher) in engineering, physics or a closely related technical specialism.
• Significant leadership experience gained in a large, international, and technically complex organisation.
• A proven track record in engineering complex, bespoke technical systems within a research or industrial setting.
• Deep knowledge of systems engineering principles, integration processes, and best practices for large-scale scientific or industrial facilities.
• The gravitas and industry recognised visibility necessary to understand the complexities of this role.
• Knowledge of IT governance, cybersecurity, and digital transformation in complex organisations.
• Experience of managing stakeholder relationships, including governance bodies and external technical partners.
• Experience in contract negotiations, project management, and resource allocation for large-scale engineering or infrastructure projects.
• A background in collaborating with partner institutions for the delivery of in-kind contributions for successful operations.
• Substantial experience leading and developing teams in a large, complex, international, and fast-paced environment.
• Strong strategic planning, analytical, numerical, and writing skills.
• The capability to work effectively at both strategic and operational levels, ensuring progress and delivering results.

ESS is an English language workplace. Therefore, fluency in English with excellent communication and interpersonal skills is essential. Knowledge of Swedish or another European language would be an advantage.

To apply:

To request a full information packet about this prestigious appointment, please contact Eva Nielsen via [email protected]

At ESS we offer talented and passionate people a unique opportunity to be involved in operating a world-leading facility for materials research. Besides attractive employment and relocation conditions, ESS provides a unique opportunity to influence the future of science and technology. You will also enjoy being part of a company culture that promotes collaboration and achievement.

If you see yourself in this role, please submit your CV and motivation letter in English by clicking on "apply" and following the instructions. We can only accept direct applications made via the ESS website, so submit your application as soon as possible. Please quote the job reference number ESD-65132 in your application.

This role requires health and safety checks as well as enhanced security clearance procedures, which will be performed as part of the recruitment process.

We look forward to receiving your application soon. Visa mindre

Postdoc - TR-QENS and TR-SANS in soft matter

Come and build the future of Science with us! About the role: The European Spallation Source (ESS) Spectroscopy Division is currently looking for a post-doctoral fellow (3 years) in Time-Resolved Neutron Scattering on Silk-Based Materials, working at the intersection of biomaterials science, soft matter physics, and neutron scattering methodology. PROJECT DESCRIPTION Evolution of structure and dynamics during assembly pathways of silk-based materials ... Visa mer
Come and build the future of Science with us!

About the role:

The European Spallation Source (ESS) Spectroscopy Division is currently looking for a post-doctoral fellow (3 years) in Time-Resolved Neutron Scattering on Silk-Based Materials, working at the intersection of biomaterials science, soft matter physics, and neutron scattering methodology.

PROJECT DESCRIPTION

Evolution of structure and dynamics during assembly pathways of silk-based materials

Silk-based materials are renowned for their unique mechanical, biocompatible, and stimuli-responsive properties. Yet, a detailed mechanistic understanding of the natural spinning and assembly processes remains elusive, preventing us from fully reproduce these properties in biomaterials. This project aims at uncovering the structural and dynamical evolution of silk assembly pathways—including the nature of transient intermediate structures—using time-resolved small-angle neutron scattering (TR-SANS) and time-resolved quasielastic neutron scattering (TR-QENS). The investigation will focus on both native silk (e.g. from silkworms) and technical-grade silk, and it will extend to silk-based composites used in cultural heritage conservation, in partnership with the University of Florence and Research Center for Colloid and Surface Science (CSGI Florence).

The project is situated at the intersection of materials science, biophysics, and instrumental method development, and will directly contribute to establishing advanced time-resolved capabilities at ESS instruments including CSPEC, and MIRACLES. This is an exciting opportunity to contribute to world-class scientific methodology development and engage in impactful research with interdisciplinary applications, from biomaterials design to cultural heritage preservation, collaborating with highly experienced researchers in a dynamic and stimulating environment. 

Description of the workplace

You will be based in the Spectroscopy Division at the European Spallation Source in Lund. The supervising team is composed of researchers in the Spectroscopy Division at the ESS (Daria Noferini and Benedetta Rosi) and in the Chemistry Department of Lund University (Felix Roosen-Runge and Cedric Dicko). The project will mainly use proposal-based access to neutron scattering instruments, both at the ESS and other relevant Large Scale Facilities. Complementary characterisation will be done with lab-based instrumentation, including SAXS, advanced DLS/SLS instruments, confocal and optical microscopy, relevant variants of optical spectroscopy, calorimetry, NMR and rheology. You will also collaborate with other relevant divisions at the ESS and external partners, and you will have the possibility to take part to relevant activities at COMMONS Centre of Excellence and LINXS Institute of Advanced Neutron and X-ray Science in Lund.

Duties and Responsibilities


• Prepare and characterize silk-based samples using complementary techniques at Lund University
• Participate in proposal writing, design, data collection and analysis of (TR-)SANS and (TR-)QENS experiments at the ESS (e.g at LOKI, CSPEC, MIRALCES) and other international large-scale facilities (e.g., ILL, ISIS) on silk-based samples.
• Prepare progress reports, present findings at conferences, and publish research in peer-reviewed journals.
• Contribute to the development and testing of TR-QENS methodologies at ESS.

Qualifications

Essential qualifications:  


• Ph.D. in Physics, Chemistry, Materials Science, or a related field.
• Strong demonstrated experience in data analysis and fitting.
• Experience with scattering and/or spectroscopy techniques.
• Expertise in relevant programming languages (e.g. Python, Julia, Matlab…).
• Ability to work independently and collaboratively within an interdisciplinary team.
• Proficiency in scientific writing and presenting in English.
• Willingness and ability to travel internationally for beamtime and collaborative research.

Desirable qualifications:  


• Experience with neutron scattering (SANS/QENS) experiments and data analysis.
• Strong research background in soft matter.
• Proficiency with Python.
• Familiarity with lab-based advanced characterization techniques (e.g., SAXS, DLS/SLS, microscopy, spectroscopy, calorimetry).
• Chemistry/biophysics laboratory skills.
• Experience with time-resolved experiments.
• Previous work on silk-based systems, protein-based or biopolymer hydrogels, or biomaterials design.
• Experience with implementing or adapting methodologies for neutron instrumentation.

This is a full-time, fixed-term position of 3 years based at the ESS Campus in Lund, Sweden.

If you see yourself in what we’re looking for, please provide your CV and motivation letter in English by clicking on “apply” and following the instructions. Please be aware that we can only accept direct applications made via the ESS website.

Certain roles at ESS require health and safety checks and/or security clearance procedures, which will be performed as part of the recruitment process.

We review applications continuously, so don’t miss out! The last day for receiving application is October 20, 2025 - so submit your application as soon as you can. Please quote the job reference number ESD-69918 in your application.

For more information regarding the ESS recruitment process, please contact Kathryn Quaak – Recruitment partner – at [email protected]. For further information regarding the position, please contact Pascale Deen, Head of Spectroscopy at [email protected].

For trade union information, please contact Unionen representative Mikael Johansson on [email protected] or SACO/Swedish Association of Graduate Engineers representative Marc Kickulies at [email protected] 

We look forward to receiving your application soon! Visa mindre

Verkstadstekniker till manuell verkstad

Vi söker en verkstadstekniker för bearbetning av små delar samt tillverkning av specialanpassad utrustning och komponenter för forskningsändamål inom Sample Environment-gruppen, som stödjer ESS vetenskapliga program. I "sample environment" grupp, ingenjörer och tekniker specialiserar på utveckling och underhåll av avancerad utrustning för vetenskapliga prov som forskare studerar på ESS. Men, du behöver en vetenskaplig backgrund själv. Vi behöver dina spec... Visa mer
Vi söker en verkstadstekniker för bearbetning av små delar samt tillverkning av specialanpassad utrustning och komponenter för forskningsändamål inom Sample Environment-gruppen, som stödjer ESS vetenskapliga program.

I "sample environment" grupp, ingenjörer och tekniker specialiserar på utveckling och underhåll av avancerad utrustning för vetenskapliga prov som forskare studerar på ESS. Men, du behöver en vetenskaplig backgrund själv. Vi behöver dina specialistkompetenser inom manuell bearbetning av specialanpassad utrustning och komponenter.

Om rollen:
I denna roll kommer du att stödja ESS-forskare och gästforskare genom att bearbeta precisionsdetaljer samt samarbeta med forskare och ingenjörer för att designa och ta fram prototyper av olika provhållare och specialutrustning. En viktig del av arbetet är att omsätta idéer till praktiska, fysiska lösningar.

Du kommer också att bidra till drift och underhåll av verkstaden samt samarbeta med ingenjörer i utveckling, testning, installation, underhåll och reparation av utrustning.

Tjänsten innebär även möjlighet till praktisk erfarenhet vid internationella forskningsanläggningar jämförbara med ESS, vilket kan medföra vissa resor utanför Sverige under de första två åren. Tjänsten kan innebära också sporadisk jourtjänstgöring under ESS driftperioder, som förväntas inledas inom två år.

Dina arbetsuppgifter kommer att omfatta:


• Bearbetning av små precisionsdetaljer med manuell verkstadsutrustning (svarv, fräs, borrning, slipning etc.) samt viss CNC-bearbetning och FDM 3D-utskrift
• Montering av både mindre och större mekaniska system
• Utförande av efterbearbetning, inklusive uppspänning, justering och modifieringar
• Medverkan vid framtagning av prototyper till provhållare och specialutrustning
• Omsätta idéer till fungerande fysiska komponenter
• Bidra till drift och underhåll av verkstaden
• Samarbeta med forskare och ingenjörer vid utveckling, testning, installation, underhåll och reparation av utrustning

Om dig:
Vi söker en praktiskt lagd tekniker med bakgrund inom maskinteknik och gedigen erfarenhet av manuellt verkstadsarbete. Du bör känna dig trygg med att utföra efterbearbetning i både svarv och fräs, inklusive uppspänning, justering och noggrann modifiering av befintliga komponenter med stor omsorg och känsla för detaljer. Erfarenhet av svetsning och lödning, kabeldragning, tunnplåtsarbete och rörbockning är meriterande, särskilt om det kompletterar dina kärnkompetenser inom bearbetning. God förmåga att tolka tekniska ritningar är en förutsättning.

Du är stolt över att lösa problem med hjälp av mekanik, trivs med att förverkliga idéer i praktisk form och har en samarbetsvillig och serviceinriktad inställning till ditt arbete. Du är nyfiken, anpassningsbar och bidrar gärna i olika typer av uppgifter. Ett genuint intresse för att reparera, förbättra eller konstruera mekaniska system är avgörande.

Du bör kunna uttrycka dig på engelska både i dokumentation och i samtal med kollegor.

Följande erfarenheter eller färdigheter är inte krav men ses som meriterande för tjänsten:

Prototyparbete och tekniskt stöd för forskningsutrustning: Erfarenhet från miljöer där idéer omsätts i fysiska verktyg eller utrustning – såsom laboratorier, testanläggningar eller tekniska verkstäder – med praktiskt deltagande i konstruktion, anpassning eller

Startdatum, varaktighet och plats
Tjänsten ska tillsättas så snart som möjligt. Det är en tillsvidareanställning med placering i Lund, Sverige.

Vad kan vi erbjuda?
Förutom att bidra till den framgångsrika lanseringen av Sveriges största vetenskapliga infrastruktur och ett flaggskepp bland europeiska forskningsinstitut kan du också förvänta dig:


• En möjlighet att bidra till framtida vetenskapliga upptäckter
• En fantastisk, mycket internationell och helt ny arbetsplats fylld med innovativa sinnen och briljanta människor från många olika yrken
• En utmanande, spännande och tempofylld arbetsmiljö
• Marknadsmässig ersättning, individuellt anpassad efter din roll, dina ansvarsområden, dina färdigheter och dina prestationer
• 25 dagars årlig semester, plus mer än 10 allmänna helgdagar och företagsbestämda lediga dagar eller dagar med reducerad arbetstid
• Månatliga pensionsinbetalningar utöver din lön
• Flexibla arbetsvillkor och en genuin balans mellan arbete och fritid

Ansökan och kontakt

Vänligen bifoga ditt CV på engelska genom att klicka på "ansök" och följa instruktionerna. Sista ansökningsdag är den 10 oktober 2025.

För mer information om ESS rekryteringsprocessen, vänligen följ denna länk https://europeanspallationsource.se/ess-recruitment-process

För ytterligare information om tjänsten, vänligen kontakta linjechefen, Hanna Wacklin-Knecht, Head of Scientific Support Division, [email protected].

För ytterligare information om rekryteringsprocessen, vänligen kontakta rekryteringspartner, Kate Quaak, [email protected].

För facklig information, vänligen kontakta Unionens representant Mikael Johansson på [email protected] eller SACO/Sveriges Ingenjörers representant Marc Kickulies på [email protected]

Vi ser fram emot din ansökan! Visa mindre

Detector Subsystem Specialist

The European Spallation Source (ESS) is one of the largest science and technology infrastructure projects being built today. Powered by the world’s most advanced linear proton accelerator, ESS will enable cutting-edge research in materials science, energy, health, and the environment for decades to come. Join us in shaping the future of science - from the ground up. About the role: ESS is at an exciting turning point. It is in transition from being a co... Visa mer
The European Spallation Source (ESS) is one of the largest science and technology infrastructure projects being built today. Powered by the world’s most advanced linear proton accelerator, ESS will enable cutting-edge research in materials science, energy, health, and the environment for decades to come.

Join us in shaping the future of science - from the ground up.

About the role:

ESS is at an exciting turning point. It is in transition from being a construction site, to being an operating facility. To further our efforts, we are now looking for a Detector/Detector subsystem configuration specialist to join our Detector Group. In this role, you’ll play a pivotal part in designing, building, and commissioning sophisticated neutron detector systems for world-class neutron instruments. Your expertise will drive technologies that shape the future of experimental science.

Day-to-day, you will:


• Make decisions to meet technical requirements as appropriate.
• Act as Electrical Operation Lead (EOL) and Electrical Safety Lead (ESL), carrying out all corresponding assignments as required and according to regulations.
• Serve as a single point-of-contact for the development, installation, and maintenance of detector gas systems.
• Be the grounding diagnostics expert, liaising with colleagues to identify, diagnose, and correct detector operational issues.
• Perform systems diagnostics and reverse engineer detector components as required.
• Provide technical insights and guidance on challenging detector issues as requested.
• Achieve tangible productivity under broadly stated goals.
• Configure, design, procure, assemble, test, evaluate, iterate, fabricate, deploy, calibrate, commission, and support detector systems for neutron-scattering instruments.
• Follow best practices, safety directives, and the code of professional conduct.
• Document and report all efforts thoroughly.
• Develop and nurture networks of suppliers, scientific collaborators, and in-kind partners.

This is a permanent position with a six-month probationary period and is based at the ESS Campus in Lund, Sweden.

About you:

The ideal candidate for this role a self-motivated person with demonstrable experience in the field of detector installation and subsystem integration – ideally for neutron detectors at a big science, or similar scale research facility. Fluency in systems diagnostics, reverse engineering, and the ability to be tangibly productive under broadly stated goals are requirements for this position.

You therefore need to have broad experience with construction, testing, conditioning, installation, integration, commissioning and steady-state operation of detectors, including all related subsystems. These subsystems include gas, low voltage, high voltage, instrumentation electronics, slow controls and readout systems. You comply rigorously with all safety regulations and best practice and pay great attention to detail. In your work, you always striving for the utmost quality and refining methods and techniques to improve the detector deliverable. Experience with the types of neutron detectors to be deployed at the ESS instruments, or the underlying technologies, would be a distinct advantage.

We’re building ESS from the ground up, so we need someone who is comfortable not only following procedures but also creating them. We attach great importance to personality and attitude, so we're looking for a real team player: Someone who is sociable, has excellent communication skills and who likes to collaborate with a multi-cultural team of world-leading experts.

ESS is an English language workplace, but the ability to speak another European language is always an advantage.

To apply:

A career at ESS gives you the opportunity to contribute to the future discoveries within neutron science at a stunning, brand-new workplace filled with innovative minds and brilliant people from across the globe. We offer market competitive, individualised compensation which is differentiated according to role, responsibilities, individual skills, abilities and achievements as well as monthly pension contributions on top of your salary.

If you see yourself in what we’re looking for, please provide your CV and motivation letter in English by clicking on “apply” and following the instructions. Please be aware that we can only accept direct applications made via the ESS website. Submit your application as soon as you can and quote the job reference number ESD-56062 in your application.

This role requires additional background screening processes and health and safety checks, which will be performed during the recruitment process.

For trade union information, please contact Unionen representative Mikael Johansson on [email protected] or SACO/Swedish Association of Graduate Engineers representative Marc Kickulies at [email protected] Visa mindre

Senior Scientist

The Machine Directorate at the European Spallation Source (ESS) in Lund, Sweden, invites applications for a Senior Scientist. Description of directorate/division The ESS Target Division is part of the ESS Operations & Machine Directorate with responsibility to design, develop, procure, install, commission and test the systems needed to convert the energetic proton beam coming from the accelerator to neutron beams that are utilized for experiments. The fir... Visa mer
The Machine Directorate at the European Spallation Source (ESS) in Lund, Sweden, invites applications for a Senior Scientist.

Description of directorate/division
The ESS Target Division is part of the ESS Operations & Machine Directorate with responsibility to design, develop, procure, install, commission and test the systems needed to convert the energetic proton beam coming from the accelerator to neutron beams that are utilized for experiments. The first step in this process is production of high energy neutrons through a spallation process involving the proton beam interaction with a tungsten target. The fast, high energy neutrons that are released in the spallation process are slowed down to the energies that are suitable for different types of experiments at ESS, and then delivered to the instruments through beam ports. Key features of the target station are the target itself, the neutron moderator and reflector system, and the neutron beam-extraction system.

Description of main responsibilities
Support the target station projects, as a senior expert in materials engineering. Supervision of Ph.D and M.Sc. thesis, which is needed for resolving key materials issues for the construction of the ESS target station.

Qualifications
More than 10 years of research records in metallurgical science. Experience of working in an international environment is essential. Excellent oral and written English skills are a prerequisite; knowledge of other European languages would be an advantage.

Our work environment is characterised by fast growth, high rate of work, and an international atmosphere with highly academic personnel. You must therefore enjoy the diversity of such and have a personality suited for the challenges it holds. In this growing organisation you will have the possibility to take part in developing new routines and processes. Our work environment is exciting and forward thinking and relies heavily on personal initiative.

What ESS can offer 
At ESS we offer people with talent and passion a unique opportunity to be involved in the development and building of a world leading facility for materials research. Besides attractive employment and relocation conditions, the flexibility to balance work life with private life and good opportunities to further enhance your skills; you will also enjoy being part of an organisational culture that promotes and supports internal career growth. We pride ourselves in having successful collaboration across different functions, and as the facility continues to grow we will keep nurturing the international and vibrant environment welcoming people from all across the world. 

Duration & Location
Permanent, full-time position with a 6 month probationary period. Your work place will be located in Lund, Sweden.

Application & Contact
Please provide your curriculum vitae and cover letter in English by clicking on “apply” and following the instructions. Please note we only accept applications via the ESS website.

We look forward to receiving your application. Visa mindre

Neutron Detector Scientist

The European Spallation Source (ESS) is one of the largest science and technology infrastructure projects being built today. Our goal is to become the brightest source of neutrons for science and technology and be operational by the end of this decade. A state of the art suite of neutron scattering instruments will be made available to address a wide range of scientific fields in fundamental and materials science. Powered by the world’s most advanced linea... Visa mer
The European Spallation Source (ESS) is one of the largest science and technology infrastructure projects being built today. Our goal is to become the brightest source of neutrons for science and technology and be operational by the end of this decade. A state of the art suite of neutron scattering instruments will be made available to address a wide range of scientific fields in fundamental and materials science. Powered by the world’s most advanced linear proton accelerator, ESS will enable cutting-edge research in materials science, energy, health, and the environment for decades to come.

Join us in shaping the future of science - from the ground up.

About the role:

ESS is at an exciting turning point. It is in transition from being a construction site, to being an operating facility. To further our efforts, we are now looking for a Detector Scientist to join our Detector Group. In this role, you’ll play a pivotal part in designing, building, and commissioning sophisticated neutron detector systems for world-class neutron instruments. Your expertise will drive technologies that shape the future of experimental science. You will manage the Helium-3 Work Unit and lead detector efforts critical to the instruments CSPEC, BIFROST, MIRACLES, and VESPA. Working collaboratively across multidisciplinary teams, you will oversee budgets, schedules, and technical execution in alignment with ESS's project goals.

Day-to-day, you will:


• Conceive, design, procure, assemble, test, deploy, and commission neutron detector systems.
• Lead the Helium-3 Work Unit, driving its technical planning, procurement, and execution.
• Coordinate detector efforts for the delivery of state-of-the-art Multitube detectors.
• Develop and maintain networks of suppliers, collaborators, and in-kind partners.
• Ensure compliance with best practices, safety guidelines, and ESS codes of conduct.
• Document efforts rigorously and support colleagues in achieving project milestones.
• Manage team assignments, budgets, schedules, and change control processes effectively.
• Represent the Detector Group and contribute to ESS's success across project phases.
• Oversee task implementation to meet strict scheduling constraints.
• Build and delegate tasks within the Work Unit team to achieve technical excellence.
• Communicate with ESS and external partners to ensure seamless task execution.
• Lead procurements following ESS guidelines and exercise professional judgment in all project decisions.

This is a permanent position with a six-month probationary period and is based at the ESS Campus in Lund, Sweden.

About you:

Our ideal candidate for this role will hold a PhD in physics or engineering and can demonstrate a strong academic background and ideally several years of highly related experience, including experience leading the industrialization of a post-PhD project involving all aspects of the detector/hardware/software/firmware chain.

Your experience should encompass the instrumentation and use of gaseous wire-chamber detectors, ideally but not necessarily position-sensitive He-3 tubes for the detection of neutrons. Proficiency in programming and data analysis is essential, with a large preference for experience in Python and C/C++. Knowledge of firmware is an asset. Additionally, familiarity with detector simulation software such as GEANT4 is highly desirable. Some knowledge of EPICS would be advantageous, as would some knowledge of analogue and digital electronics.

Whilst experience in the corresponding scientific techniques is advantageous, it is not mandatory. However, you must possess the hands-on practical skills necessary to prepare experimental setups for the precision evaluation of the performance of detectors (including beam tests at offsite facilities). We’re building ESS from the ground up, so we need someone who is comfortable not only following procedures but also creating them. We attach great importance to personality and attitude, so we're looking for a hands-on self-starter who can work in a structured, orderly, responsible and – most importantly – safe way. You should thrive in a dynamic environment where your responsibilities span multiple projects.

ESS is an English language workplace, but the ability to speak another European language would be an advantage.

To Apply:

A career at ESS gives you the opportunity to contribute to the future discoveries within neutron science at a stunning, brand-new workplace filled with innovative minds and brilliant people from across the globe. We offer market competitive, individualised compensation which is differentiated according to role, responsibilities, individual skills, abilities and achievements as well as monthly pension contributions on top of your salary.

If you see yourself in what we’re looking for, please provide your CV and motivation letter in English by clicking on “apply” and following the instructions. Please be aware that we can only accept direct applications made via the ESS website. Submit your application as soon as you can and quote the job reference number ESD-70342 in your application.

This role requires additional background screening processes and health and safety checks, which will be performed during the recruitment process.

For further information regarding the position, please contact Talent Acquisition Specialist Daniel Nordin Baker on [email protected] or Kevin Fissum - Detector Group Leader - via [email protected] 

For trade union information, please contact Unionen representative Mikael Johansson on [email protected] or SACO/Swedish Association of Graduate Engineers representative Marc Kickulies at [email protected] Visa mindre

Laboratory Mechanical Engineer

The European Spallation Source (ESS) is one of the largest science and technology infrastructure projects being built today. Our goal is to become the brightest source of neutrons for science and technology and be operational by the end of this decade. A state of the art suite of neutron scattering instruments will be made available to address a wide range of scientific fields in fundamental and materials science. Powered by the world’s most advanced linea... Visa mer
The European Spallation Source (ESS) is one of the largest science and technology infrastructure projects being built today. Our goal is to become the brightest source of neutrons for science and technology and be operational by the end of this decade. A state of the art suite of neutron scattering instruments will be made available to address a wide range of scientific fields in fundamental and materials science. Powered by the world’s most advanced linear proton accelerator, ESS will enable cutting-edge research in materials science, energy, health, and the environment for decades to come.

Join us in shaping the future of science - from the ground up.

About the role:

We are seeking a Laboratory Mechanical Engineer to join our Mechanical Measurements Lab (MML) in the Mechanical Engineering and Technology (META) Section. This role represents a unique opportunity for a laboratory or mechanical engineer to experience the best of both worlds: Project engineering, hands-on mechanical design work coupled with practical laboratory-based procedures, processes and experiments.

We are looking for someone with project engineering and leadership skills to drive initiatives from design through implementation. The ideal candidate will combine technical expertise with the ability to lead projects, plan, coordinate teams, and ensure successful delivery from concept through execution for innovative solutions in a fast-paced lab environment. You therefore need to bring a balance of hands-on engineering knowledge and project management skills to ensure timely, high-quality outcomes.

In this role, you’ll tackle both well-established mechanical measurements such as Modal Analysis, Vibration Analysis, Structural Health Monitoring, Material Testing, and advanced techniques as Resonant Ultrasound Spectroscopy and Transient Grating Spectroscopy under challenging conditions like vacuum or radiation. You'll be the driving force behind leading engineering projects, designing, analysing, and troubleshooting cutting-edge mechanical systems, transforming concepts into fully functional prototypes and engineering solutions.

This role is also about leadership and ownership. You’ll be responsible for creating and validating 3D models and 2D drawings in CAD, generating technical reports, and delivering robust solutions that align with ESS-wide project requirements, including projects for superconducting applications. From conceptual design to production oversight in both underground labs and surface assembly halls, you’ll actively participate in leading teams, system assembly, measurements, manufacturing follow-ups, and hands-on testing. Collaborating with experts across disciplines, you’ll ensure every design is both groundbreaking and practical.

Your creativity, precision, and problem-solving mindset will be key for completing tasks such as reviewing tolerances, testing manufacturability, and refining assembly processes. With access to state-of-the-art tools like CATIA and our in-house ESS CAD management system, you’ll lead design evolution, provide technical support, and deliver first-rate solutions.

This is a full-time, permanent position based at the ESS campus in Lund, Sweden.

About you:

First and foremost, we need someone who is suitably qualified and experienced. Ideally, you will have appropriate academic and technical qualifications, such as a Higher Technical or University engineering degree in mechanical engineering or another equivalent engineering degree. However any relevant experience in a similar role is critical as qualification that you hold.

A strong background in project engineering for lab-based initiatives, coupled with experience in leading work-packages and teams, will be considered key assets for this role. A minimum of 5 years of professional experience in mechanical engineering or a related field is required, with proven leadership in engineering projects regarded as a critical competence for this position.

In this unique and interesting role, we need someone with a good level of competency with 3D & 2D design using CAD and CATIA. The ideal candidate will understand both Geometric Dimensioning and Tolerancing and its application to production and review of drawings under ISO standards, as well as the rules and norms for mechanical manufacturing in accordance with applicable and interfacing electrical regulations.

Prior experience of conducting Non-Destructive and Destructive Testing and laboratory measurements would be an advantage.

A key element of this role will be the publishing of experimental results and scientific papers - so an established academic publication history is desirable. We attach great importance to personality and attitude, so we're looking for a real team player: Someone who is sociable, has excellent communication skills, who likes to collaborate with different people and who is committed to helping this amazing project to realise its full potential.

The working language of ESS is English but it the ability to speak Swedish or another European language would be an advantage.

To apply:


A career at ESS gives you the opportunity to contribute to the future discoveries within neutron science at a stunning, brand-new workplace filled with innovative minds and brilliant people from across the globe. We offer market competitive, individualised compensation which is differentiated according to role, responsibilities, individual skills, abilities and achievements as well as monthly pension contributions on top of your salary.

If you see yourself in what we’re looking for, please provide your CV and motivation letter in English by clicking on “apply” and following the instructions. Please be aware that we can only accept direct applications made via the ESS website. Submit your application as soon as you can and quote the job reference number ESD-68681 in your application.

This role requires additional background screening processes and health and safety checks, which will be performed during the recruitment process.

For further information regarding the position, please contact Talent Acquisition Specialist Daniel Nordin Baker on [email protected] or hiring manager Nick Gazis - via [email protected] 

For trade union information, please contact Unionen representative Mikael Johansson on [email protected] or SACO/Swedish Association of Graduate Engineers representative Marc Kickulies at [email protected] Visa mindre

FPGA Engineer

The European Spallation Source (ESS) is one of the largest science and technology infrastructure projects being built today. Our goal is to become the brightest source of neutrons for science and technology and be operational by the end of this decade. A state-of-the-art suite of neutron scattering instruments will be made available to address a wide range of scientific fields in fundamental and materials science. Powered by the world’s most advanced linea... Visa mer
The European Spallation Source (ESS) is one of the largest science and technology infrastructure projects being built today. Our goal is to become the brightest source of neutrons for science and technology and be operational by the end of this decade. A state-of-the-art suite of neutron scattering instruments will be made available to address a wide range of scientific fields in fundamental and materials science. Powered by the world’s most advanced linear proton accelerator, ESS will enable cutting-edge research in materials science, energy, health, and the environment for decades to come.

About the role:

As our new FPGA Engineer, you will play a key role in developing and maintaining firmware solutions critical to real-time data acquisition and control systems at the heart of our particle accelerator. Working within our beam diagnostics section, you’ll collaborate across a diverse range of disciplines to deliver robust, high-performance firmware that provides our scientists with the “eyes” needed to see how our proton beam is behaving

Day-to-day, you will:


• Develop FPGA-based solutions for high-performance beam instrumentation systems.
• Implement signal and image processing algorithms to achieve optimal system performance and reliability.
• Lead the architectural planning and design for digital systems associated with beam diagnostics.
• Collaborate with other organizational units to define and establish standards for FPGA development and overall digital architecture.
• Verify and validate FPGA implementations against functional and performance requirements.
• Deliver projects within the allocated timelines and budgets while maintaining quality standards.
• Conduct thorough testing and verification of FPGA implementations.
• Provide documentation and training on FPGA implementations, digital architecture guidelines, and verification processes to relevant stakeholders.
• Ensure alignment between FPGA development and the broader goals of the ESS organization.
• Report progress, challenges, and results to the Section Leader.
• Approve specifications for digital architectures and instrumentation systems within the scope of beam diagnostics.
• Make decisions regarding hardware/software optimization strategies for FPGA-based systems.
• Select tools and platforms for FPGA development and verification.
• Define and maintain guidelines for digital architecture standards in collaboration with organizational units across ESS.

This is a full-time, permanent position based at the ESS Campus in Lund, Sweden.

About you:

This is not an entry level role. We’re seeking a suitably qualified and experienced FPGA developer with a practical mindset and a collaborative spirit. A bachelor’s degree in engineering, electronics, computer science or a related field is a requirement for this position. A higher degree would be an advantage. You should be used to working hands-on with hardware and enjoy solving complex engineering challenges that make a difference. We need someone to bring a proactive, structured approach and take ownership of your work – from design through implementation and long-term support.

You need to have significant, demonstrable FPGA development experience, which includes robust familiarity with Xilinx Vivado, as well as strong skills in firmware development. You’re need to be confident working with high-speed data acquisition, MTCA or similar crate standards, and ideally have C/C++ development experience. Experience and knowledge about quality assurance and verification of control systems, preferably using automated test tools is essential.

You are someone who cares about quality, safety, and system performance, and you are familiar with testing frameworks, documentation standards, and lifecycle management tools. Experience in scientific or research infrastructure projects is a strong advantage. We attach great importance to personality and attitude, so we're looking for a real team player: Someone who is sociable, who likes to collaborate with different people and who is committed to helping this amazing project to realise its full potential.

English is the working language of ESS, so you need to be able to communicate clearly in English, both verbally and in writing, so you can develop and maintain high-quality technical documentation.

To apply:

A career at ESS gives you the opportunity to contribute to the future discoveries within neutron science at a stunning, brand-new workplace filled with innovative minds and brilliant people from across the globe. We offer market competitive, individualised compensation which is differentiated according to role, responsibilities, individual skills, abilities and achievements as well as monthly pension contributions on top of your salary.

If you see yourself in what we’re looking for, please provide your CV and motivation letter in English by clicking on “apply” and following the instructions. Please be aware that we can only accept direct applications made via the ESS website. Submit your application as soon as you can and quote the job reference number ESD-64694 in your application.

This role requires additional background screening processes and health and safety checks, which will be performed during the recruitment process.

For further information regarding the position, please contact Talent Acquisition Specialist Daniel Nordin Baker on [email protected] or hiring manager Tom Shea via [email protected]

For trade union information, please contact Unionen representative Mikael Johansson on [email protected] or SACO/Swedish Association of Graduate Engineers representative Marc Kickulies at [email protected] Visa mindre

Senior Project Manager

The European Spallation Source (ESS) is one of the largest science and technology infrastructure projects being built today. Our goal is to become the brightest source of neutrons for science and technology and be operational by the end of this decade. A state-of-the-art suite of neutron scattering instruments will be made available to address a wide range of scientific fields in fundamental and materials science. Powered by the world’s most advanced linea... Visa mer
The European Spallation Source (ESS) is one of the largest science and technology infrastructure projects being built today. Our goal is to become the brightest source of neutrons for science and technology and be operational by the end of this decade. A state-of-the-art suite of neutron scattering instruments will be made available to address a wide range of scientific fields in fundamental and materials science. Powered by the world’s most advanced linear proton accelerator, ESS will enable cutting-edge research in materials science, energy, health, and the environment for decades to come.

Join us in shaping the future of science - from the ground up.

About the role:

ESS is at a critical, but exciting turning point. It is in the final stages of transitioning from the construction and commissioning stage to being a world-class, operating facility. To help us realise our goal of being the most powerful neutron source in the world, we are looking to appoint a Senior Project Manager to join the ESS Project Directorate.

In this role, you will provide project management support to our Business and Functions (B&F) area and to our Operations and Machine Directorate to deliver the final stage of the transition from our current project phase to the steady state operations (SSO) phase of the facility. As such, this is a full-time, fixed-term opportunity for a period of three years. The role is based at the ESS main campus in Lund, Sweden.

Day-to-day, you will:


• Ensure that realistic project and quality plans are prepared and maintained as well as provide regular and accurate reports to stakeholders as appropriate.
• Drive project schedules to foster a delivery mindset within the focus areas.
• Maintain the Control Account Plan including Planned Budgeted Cost for Work Scheduled (BCWS).
• Perform verification and control of costs charged to the control account, including Actual Cost of Work Performed (ACWP).
• Validate work accomplished, schedule progress - Budgeted Cost for Work Performed (BCWP).
• Update Estimates to Complete (ETC) for work packages and also validate Estimates At Complete (EAC).
• Conduct formal cost and schedule variance analysis and develop recovery plans required to recover schedule or cost variances.
• Managing control account risks – both threats and opportunities.
• Develop detailed action plans should risks materialise to recover schedule and/or cost deviations.
• Process change requests for changes to budget, schedule or technical scope of the control account.
• Take on delegated responsibilities from the ESS Project Director as and when required.

About you:

For this role, we are looking for a suitably qualified and experienced project management professional with a solid and extensive background in managing major projects throughout the design, installation and commission phases. You must bring a track-record of delivering change in varied environments and have the confidence to work alongside stakeholders from all levels of an organisation – both internally and externally. You are practiced in creating and maintaining project management processes, including initiation, planning, executing, monitoring, risk management, change control, schedules and documentation.

Whilst prior experience of working at a neutron source or spallation facility is not required for this role, prior experience of working with big science projects would be a definite advantage. Since this is a fixed-term position, you need to be able to assimilate a lot of information about the project in a very short space of time. Furthermore, you need to bring professional experience in IPM, APM, XLPM or equivalent, as well as Microsoft Office and P6. As a person you have strong communication skills, a delivery mentality, and the ability to challenge procedures and processes. The proven ability to work strategically and to see the wider context – whilst not losing track of planning, organising, and following up – is essential.

Fluency in written and spoken English is a prerequisite. The ability to speak Swedish or another European language would be beneficial.

To apply:

A career at ESS gives you the opportunity to contribute to the future discoveries within neutron science at a stunning, brand-new workplace filled with innovative minds and brilliant people from across the globe. We offer market competitive, individualised compensation which is differentiated according to role, responsibilities, individual skills, abilities and achievements as well as monthly pension contributions on top of your salary.

If you see yourself in what we’re looking for, please provide your CV and motivation letter in English by clicking on “apply” and following the instructions. Please be aware that we can only accept direct applications made via the ESS website. Submit your application as soon as you can and quote the job reference number ESD-69296 in your application.

This role requires additional background screening processes and health and safety checks, which will be performed during the recruitment process.

For further information regarding the position, please contact Talent Acquisition Specialist Daniel Nordin Baker on [email protected] 

For trade union information, please contact Unionen representative Mikael Johansson on [email protected] or SACO/Swedish Association of Graduate Engineers representative Marc Kickulies at [email protected] Visa mindre

Finance Administrator

The European Spallation Source is one of the largest science and technology infrastructure projects being built today. The project includes the most powerful linear proton accelerator ever built, a five-tonne, helium-cooled tungsten target wheel, 15 state-of-the-art neutron instruments, a suite of laboratories, and a super-computing data management and software development centre. In the context of its history and future as a scientific organisation, howev... Visa mer
The European Spallation Source is one of the largest science and technology infrastructure projects being built today. The project includes the most powerful linear proton accelerator ever built, a five-tonne, helium-cooled tungsten target wheel, 15 state-of-the-art neutron instruments, a suite of laboratories, and a super-computing data management and software development centre. In the context of its history and future as a scientific organisation, however, it is more than the sum of its parts. It is a brand-new Big Science organisation, and we are building it from the ground up.

Come and shape the future of science with us!


We are now looking to appoint a Finance Administrator for the Finance group. 

About the role
The Finance & Business Control Division maintains and supports ESS’ fiscal responsibilities through accounting, controlling, and financial compliance. We provide financial oversight and business controlling services to ESS. We cover accounting, VAT, re-imbursements, Member contributions, financing, cash flow, financial reporting, analyses, monitoring, business planning, and large insurances.

As Finance Administrator for accounts payable your main area of work will be to support the Finance Group with the processing of invoices in complience with financial policies and procedures. This includes taking care of mails from our suppliers, registration of invoices, following up on statements and payments to make sure invoices are paid in time. In addition, you will work on consolidating databases. In addition to your regular responsibilities, you will support the finance team with other processes. We see significant potential to further develop the scope of this role.

This is a full-time, permanent position based at the ESS Campus in Lund, Sweden.

About you
The ideal candidate holds a Bachelor's degree in Accounting, Business, or Economics and possesses a solid understanding of Swedish accounting standards. Prior experience in accounts payable is highly desirable. 

We highly value personality and attitude and are looking for a genuine team player. The right candidate is sociable, with excellent communication skills, and thrives when collaborating with a diverse group of colleagues in an international environment.  

The role requires someone who is a quick learner, driven, and eager to develop and master new skills. To succeed, you must be committed and thorough, as well as have a flexible mindset and the ability to prioritize. You demonstrate strong initiative in your work and is never afraid to ask questions when faced with challenges. With a high service-oriented attitude, you ensure that every interaction is handled with care and professionalism. 

Fluency in both written and spoken English is required, and proficiency in Swedish is also essential.

We offer
A career at ESS gives you the opportunity to contribute to the future discoveries within neutron science at a stunning, brand-new workplace filled with innovative minds and brilliant people from across the globe. We offer market competitive, individualised compensation which is differentiated according to role, responsibilities, individual skills, abilities and achievements as well as monthly pension contributions on top of your salary. You can learn more about the exciting benefits of working at ESS on our careers webpage.

Start date: September 2025, or as soon as possible by mutual agreement.

To apply
If you see yourself in what we are looking for, please provide your CV and motivation letter in English by clicking on “apply” and following the instructions. The last day to apply is 6 August, 2025.

Please be advised that, due to the summer holiday period, response times to any inquiries will be slightly delayed.

We look forward to receiving your application!

Please be aware that we can only accept direct applications made via the ESS website.

Certain roles require additional background screening processes and health and safety checks, which will be performed during the recruitment process.
For more information regarding the ESS recruitment process in general, please follow this link: Careers | ESS


We have made our media choice regarding recruitments and kindly decline contact with media sellers. Visa mindre

Support Section Leader - Neutron Detector Group

The European Spallation Source (ESS) is one of the largest science and technology infrastructure projects being built today. Powered by the world’s most advanced linear proton accelerator, ESS will enable cutting-edge research in materials science, energy, health, and the environment for decades to come. Join us in shaping the future of science - from the ground up. About the role: ESS is entering a new era. We are transitioning from construction to ope... Visa mer
The European Spallation Source (ESS) is one of the largest science and technology infrastructure projects being built today. Powered by the world’s most advanced linear proton accelerator, ESS will enable cutting-edge research in materials science, energy, health, and the environment for decades to come.

Join us in shaping the future of science - from the ground up.

About the role:

ESS is entering a new era. We are transitioning from construction to operations, and our Detector Group (DetG) is central to this evolution. We are now looking for an experienced and people-focused scientist or engineer to lead our Support Section within the Detector Group.

In this leadership role, you’ll be responsible for supporting the growth, performance, and wellbeing of a multi-disciplinary team of detector scientists and engineers. You will act as a bridge between DetG Support Section members and senior group leadership, helping shape strategy while ensuring that individual voices are heard and supported. The role itself is split into a 40% management position with a 60% detector scientist responsibility.

Alongside your leadership responsibilities, you will also remain technically active, contributing directly to detector R&D projects that match your expertise. You’ll play a visible role in the development of neutron detection systems — supporting everything from early-stage design through to integration, commissioning, and scientific use.

What you’ll do:


• Lead, manage, and mentor the Support Section of the Detector Group.
• Provide career guidance and development support to section members.
• Represent the Support Section in strategic and operational discussions with senior DetG leadership.
• Contribute technically to ongoing and future detector development initiatives.
• Present scientific and technical work at internal reviews, external conferences, and in publications.
• Ensure compliance with safety practices, quality standards, and engineering documentation protocols.

This is a three-year, fixed-term position and is based at the ESS Campus in Lund, Sweden.

About you:

You hold a PhD in physics, engineering, or related, and can demonstrate a strong academic background and several years of highly related experience. Your experience preferentially includes leading a post-PhD neutron detector development project which has involved the ESS detector community. You enjoy working with people, and are approachable, respectful, and collaborative by nature. You work to see every individual, have a talent for considering perspectives different from your own, and are committed to the provision of a positive everyday work environment. You have demonstrable organizational and managerial skills and are knowledgeable of and versed in the ESS way-of-working.

We are building ESS from the ground up, so we need someone who is comfortable not only following procedures, but also creating them. We attach great importance to personality and attitude, so we're looking for a real team player. Excellent communication and interpersonal skills are vital for effective collaboration with a diverse group of scientists, engineers, and technical staff within a multidisciplinary team where everyone is committed to helping this amazing project to realise its full potential. We need a hands-on self-starter who is able to work in a structured, orderly, responsible and – most importantly – safe way.

The working language of ESS is English and we need someone who can start as soon as possible.

To apply:

A career at ESS gives you the opportunity to contribute to the future discoveries within neutron science at a stunning, brand-new workplace filled with innovative minds and brilliant people from across the globe. We offer market competitive, individualised compensation which is differentiated according to role, responsibilities, individual skills, abilities and achievements as well as monthly pension contributions on top of your salary.

If you see yourself in what we’re looking for, please provide your CV and motivation letter in English by clicking on “apply” and following the instructions. Please be aware that we can only accept direct applications made via the ESS website. Submit your application as soon as you can and quote the job reference number ESD-68370 in your application.

This role requires additional background screening processes and health and safety checks, which will be performed during the recruitment process.

For further information regarding the position, please contact Talent Acquisition Specialist Daniel Nordin Baker on [email protected] or Detector Group Leader Kevin Fissum via [email protected]

For trade union information, please contact Unionen representative Mikael Johansson on [email protected] or SACO/Swedish Association of Graduate Engineers representative Marc Kickulies at [email protected] Visa mindre

Sample Environment Group Leader

The European Spallation Source (ESS) is one of the largest science and technology infrastructure projects being built today. Our goal is to become the brightest source of neutrons for science and technology and be operational by the end of this decade. A state of the art suite of neutron scattering instruments will be made available to address a wide range of scientific fields in fundamental and materials science. Powered by the world’s most advanced linea... Visa mer
The European Spallation Source (ESS) is one of the largest science and technology infrastructure projects being built today. Our goal is to become the brightest source of neutrons for science and technology and be operational by the end of this decade. A state of the art suite of neutron scattering instruments will be made available to address a wide range of scientific fields in fundamental and materials science. Powered by the world’s most advanced linear proton accelerator, ESS will enable cutting-edge research in materials science, energy, health, and the environment for decades to come.

Join us in shaping the future of science - from the ground up.

About the role

Within the Science Directorate of ESS, the Scientific Support Division provides the ESS neutron science progam with experimental support with sample environments, user laboratories, deuteration, and hall coordination in close collaboration with Instrument Divisions.

The Sample Environment group at ESS is preparing to support all sample environments used on ESS instruments by providing systems for soft matter, life science and chemistry experiments, as well as equipment for magnetic/electric fields, cryogenic temperatures, high- temperature, high-pressure, gas handling and mechanical processing.

The ESS sample environment group is seeking to appoint a group leader to manage the group and lead the development of an internationally competitive suite of sample environments. The sample environment group leader will report to the Head of Scientific Support, and will be responsible for managing all aspects of the sample environment group’s operations to ensure efficiency and performance in accordance with ESS objectives and strategy for the neutron science programme. As the Sample Environment group leader you will occupy a key position in the science directorate.

Day-to-day, you will be expected to:


• Build-up, train and manage the Sample Environment group with an emphasis on teamwork, performance and safety;
• Oversee the completion, installation and commissioning of the ESS sample environments for the start of the user programme
• Develop strategies for the technical evolution towards an internationally competitive sample environment suite and its optimum scientific use on the instruments;
• Lead the group’s actions towards supporting scientific excellence and high quality of sample environment services;
• Develop and manage the operational sample environment service at ESS, including on-call support;
• Support the sample environment group and ESS user programme in own area of expertise;
• Promote good collaboration and communication with ESS instrument teams and technical services
• Represent the group’s interests towards internal and external stakeholders
• Establish and maintain effective links with other sample environment groups at other large scale research infrastructures.

About you:

Our ideal candidate is a confident, service-minded sample environment professional with a natural talent for leading teams and coordinating complex technical support for world-class scientific research. Whether you're managing people, systems, or resources, you bring structure, clarity, and reliability to everything you do - always with a focus on safety, efficiency, and user support. You have an engineering or scientific university education or extensive work experience in sample environments, as well as significant own hands-on experience of sample environment development and operations at a large scale facility, including supporting scientist and users.

You are expected to have documented experience and deep understanding of:


•  Sample environment support for research use, including operations, user support, development, and design of new equipment;  
•  Supervising engineering and technical staff;
•  Organising and managing a sample environment support service and workshops;
•  Planning and managing budgets as well as operations, including on-call support;
•  Scheduling and managing projects to clear timelines and priorities;
•  Collaborating proactively with a range of internal and external stakeholders;
•  Working in a multidisciplinary and international environment;
•  Management of sample environment and workshop safety, including hazardous materials.

Additional merits that constitute an advantage include:


• Experience leading a sample environment service at an operational international user facility;
• Hands-on experience working in a sample environment service at a large-scale research infrastructure;
• Experience and understanding of neutron scattering research;
• Experience with international collaboration and networking within similar facilities;  
• Attracting external funding to enhance core-activities.

This is a full-time, permanent position based at the ESS Campus in Lund, Sweden.

To apply:

A career at ESS gives you the opportunity to contribute to the future discoveries within neutron science at a stunning, brand-new workplace filled with innovative minds and brilliant people from across the globe. We offer market competitive, individualised compensation which is differentiated according to role, responsibilities, individual skills, abilities and achievements as well as monthly pension contributions on top of your salary.

If you see yourself in what we’re looking for, please provide your CV and motivation letter in English by clicking on “apply” and following the instructions. Please be aware that we can only accept direct applications made via the ESS website. Submit your application as soon as you can and quote the job reference number ESD-68023 in your application.

This role requires additional background screening processes and health and safety checks, which will be performed during the recruitment process.

For further information regarding the position, please contact Talent Acquisition Specialist Kathryn Quaak at [email protected] or Hiring Manager Hanna Wacklin-Knecht on [email protected]

For trade union information, please contact Unionen representative Mikael Johansson on [email protected] or SACO/Swedish Association of Graduate Engineers representative Marc Kickulies at [email protected]

We look forward to receiving your application! Visa mindre

Instrument Operations Engineer

The European Spallation Source is one of the largest science and technology infrastructure projects being built today. The project includes the most powerful linear proton accelerator ever built, a five-tonne, helium-cooled tungsten target wheel, state-of-the-art neutron instruments, a suite of laboratories, and a data management and software development centre. It is a brand-new Big Science organisation and we are building it from the ground up. The ESS ... Visa mer
The European Spallation Source is one of the largest science and technology infrastructure projects being built today. The project includes the most powerful linear proton accelerator ever built, a five-tonne, helium-cooled tungsten target wheel, state-of-the-art neutron instruments, a suite of laboratories, and a data management and software development centre. It is a brand-new Big Science organisation and we are building it from the ground up.

The ESS will be a user facility, welcoming researchers from around the world to perform experiments using the neutron instruments and associated facilities. We currently expect to have first neutron production in 2025 and welcome our first external users in 2027.

We are now looking for an Instrument Operations Engineer for the CSPEC instrument. The position is within the Spectroscopy Division.

About the division

The spectroscopy division is responsible for 5 instruments that probe material dynamic using inelastic neutron scattering. A wide variety of behaviours can be probed to determine material functionalities ranging from diffusional or hopping motions of atoms, the rotational modes of molecules, sound modes and molecular vibrations, recoil in quantum fluids, magnetic and quantum excitations or even electronic transitions. The 5 instruments of the spectroscopy division are MIRACLES, a backscattering spectrometer, CSPEC, a cold time of flight spectrometer, BIFROST, the extreme environment spectrometer, T-REX, a thermal time of flight spectrometer and VESPA, a vibrational spectrometer.  This role will support CSPEC.

About the role

As an Instrument Operations Engineer you will:


• Support the instrument team with the final installation of the instrument,
• Participate in the mechanical design and realization of modifications to an instrument required during installation, commissioning, upgrade and operation,
• Prepare, execute, and document test plans for the instrument components (“Cold commissioning”) working with the instrument scientist, engineer, IPL, and in liaison with staff in specialist disciplines/technical groups,
• Support the preparation of safety documentation, including standard operating procedures and operations manuals for instruments SRR,
• Plan, manage and execute scheduled and unscheduled maintenance of the instrument throughout its lifetime. Coordinate with support groups (vacuum, choppers, motion control, sample environment, etc…) maintenance activities,
• Support the instrument scientists, data scientists and users in the successful planning and execution of experiments,
• Analyse and develop solutions for successful integration and execution of novel experiments and equipment with the instrument,
• Support other instrument IOEs and support groups through close collaboration on related projects and cross training.

About you

We are looking for a self-motivated person who is keen to support an instrument team in order to get it ready for first neutrons. You should be a ‘hands-on’ person and open to learn new things along the way. You will have: 


• A minimum of 5 years of experience in a technical or vocational environment related to the project or a bachelor’s degree in Engineering or the Physical Sciences,
• Hands-on experience with complex technical equipment,
• Excellent communication and interpersonal skills to be able to interact effectively with a diverse group of scientists, engineers, and technical staff,
• Excellent oral and written English skills.

Physical requirements for this job include the use of hand, eye and ear protection gear, stooping, kneeling, lifting, and sitting or standing for extended periods of time.

Ideally, you will also have:


• Experience with neutron experiments and neutron scattering procedures,
• Familiarity with workshop tools and equipment is a plus, but training can be provided,
• Experience with the development, operation, and maintenance of complex scientific equipment,
• Ability to perform simple mechanical design (CAD) and work with designers,
• Experience working in an international research environment.

What ESS will offer


• an opportunity to contribute to the future of neutron science 
• a workplace full of creative individuals and people from all over the world
• a challenging, exciting, and fast-paced work environment
• market competitive compensation that is individual and differentiated according to role, responsibilities, individual skills, abilities, and achievements
• benefits including 30 days of annual leave as well as more than 10 days of public holidays and company days off or days with limited working hours, flexible working arrangements, and a focus on work-life balance.
• where applicable, relocation support and allowances may be available.

Duration & Location

The position is a 3 year fixed-term role and the workplace will be situated in Lund, Sweden. Travelling is expected if the need arises.

Application & Contact

Please provide your curriculum vitae and cover letter in English by clicking on “apply” and following the instructions. The deadline for applications is 03 February 2025.

Note that we only accept applications via the ESS website or ESS intranet. Internal candidates are encouraged to apply through the intranet. We accept candidates into the recruitment process continuously, so please do not hesitate to apply.

Certain roles at ESS require health and safety checks and/or security clearance procedures, which will be performed as part of the recruitment process.

For further information regarding the position, please contact Pascale Deen, Head of Spectroscopy Division, [email protected]

For more information about the recruitment process, please contact Kathryn Quaak, HR Officer, [email protected]

We look forward to receiving your application! Visa mindre

Group Leader for Experimental Hall Coordinators

The European Spallation Source (ESS) is one of the largest science and technology infrastructure projects being built today. Our goal is to become the brightest source of neutrons for science and technology and be operational by the end of this decade. A state of the art suite of neutron scattering instruments will be made available to address a wide range of scientific fields in fundamental and materials science. Powered by the world’s most advanced linea... Visa mer
The European Spallation Source (ESS) is one of the largest science and technology infrastructure projects being built today. Our goal is to become the brightest source of neutrons for science and technology and be operational by the end of this decade. A state of the art suite of neutron scattering instruments will be made available to address a wide range of scientific fields in fundamental and materials science. Powered by the world’s most advanced linear proton accelerator, ESS will enable cutting-edge research in materials science, energy, health, and the environment for decades to come.

Join us in shaping the future of science - from the ground up.

About the role:

Within the Science Directorate of ESS, the Scientific Support Division provides the ESS neutron science progam with experimental support with sample environments, user laboratories, deuteration, and hall coordination in close collaboration with the Instrument Divisions.

We are now seeking to appoint a Group Leader to steer the newly formed Hall Coordination group at ESS. The Hall Coordination group will support the neutron science programme by providing 24/7 technical support in the experimental halls and adjacent laboratory buildings during neutron production days, as well as supporting general facility maintenance, coordination of activities in the experimental halls, and upgrade programs during shutdown periods.

As the Hall Coordination group leader you will occupy a key position as the main point of coordination between the neutron science program in the experimental halls and the main control room and machine operations. You will also collaborate closely with facility management, ESH&S (Environment, Safety, Health & Security) on ensuring safety in the experimental areas.

Through leading the team responsible for providing technical and operational support across the neutron experimental halls at ESS, you must ultimately ensure that daily operations run smoothly, safely, and efficiently - while enabling seamless support for the scientific user programme.

Day-to-day, you will:


• Build, train, and manage the hall coordination team, with a focus on teamwork, performance, and safety.
• Plan and deliver 3-shift support during neutron production days.
• Coordinate the transition of the halls from construction to full operation, in close collaboration with instrument installation teams.
• Act as the primary liaison between the experimental halls and the Main Control Room.
• Lead daily hall meetings, maintaining a strong safety culture, and overseeing day-to-day coordination of activities.
• Manage the experiment hall coordination efforts, including maintenance during shutdown periods and cross-team collaboration with Facility Management and other technical groups.
• Promote open communication and contributing to the professional growth of team members through training and feedback.

This is a full-time, permanent position based at the ESS Campus in Lund, Sweden. The position includes being part of ESS Crisis Organisation as a First Responder, which requires passing a security check, treadmill test to handle breathing apparatus and an annual medical check-up."

About you:

Our ideal candidate is a confident, service-minded professional with a natural talent for leading teams and coordinating complex technical  support for world-class scientific research. Whether you're managing people, systems, or resources, you bring structure, clarity, and reliability to everything you do - always with a focus on safety, efficiency, and user support.

You have a bachelor’s degree in engineering, physics, or a related field. However, equivalent expertise through extensive hands-on experience in technical services is also acceptable for this role. You’ve worked in fast-paced, multidisciplinary environments, ideally within a research infrastructure or large-scale technical facility, where you've led teams, supported scientists, and ensured the seamless delivery of operations.

You’re a natural coordinator who is skilled at managing technicians, integrating services across departments, and liaising with both internal stakeholders and external providers. You understand the unique demands of shared experimental areas and have a keen eye for ensuring operational readiness, equipment upkeep, and a strong safety culture. You’re proactive when it comes to identifying risks, solving problems, planning work, and responding to unexpected challenges, including emergency situations.

Experience in radiological, chemical, or high-hazard environments is a strong asset, as is any background supporting 24/7 operations or experiment hall coordination at research facilities. You are someone who can remain calm under pressure, bring a collaborative mindset, and who has an unwavering commitment to enabling great science through great support.

To apply:

A career at ESS gives you the opportunity to contribute to the future discoveries within neutron science at a stunning, brand-new workplace filled with innovative minds and brilliant people from across the globe. We offer market competitive, individualised compensation which is differentiated according to role, responsibilities, individual skills, abilities and achievements as well as monthly pension contributions on top of your salary.

If you see yourself in what we’re looking for, please provide your CV and motivation letter in English by clicking on “apply” and following the instructions. Please be aware that we can only accept direct applications made via the ESS website. Submit your application as soon as you can and quote the job reference number ESD-68025 in your application.

This role requires additional background screening processes and health and safety checks, which will be performed during the recruitment process.

For further information regarding the position, please contact Talent Acquisition Specialist Daniel Nordin Baker on [email protected] or Hanna Wacklin-Knecht - Head of the Scientific Support Division - via [email protected] 

For trade union information, please contact Unionen representative Mikael Johansson on [email protected] or SACO/Swedish Association of Graduate Engineers representative Marc Kickulies at [email protected]

We look forward to receiving your application! Visa mindre

Deuteration Chemist

The European Spallation Source (ESS) is one of the largest science and technology infrastructure projects being built today. Our goal is to become the brightest source of neutrons for science and technology and be operational by the end of this decade. A state of the art suite of neutron scattering instruments will be made available to address a wide range of scientific fields in fundamental and materials science. Powered by the world’s most advanced linea... Visa mer
The European Spallation Source (ESS) is one of the largest science and technology infrastructure projects being built today. Our goal is to become the brightest source of neutrons for science and technology and be operational by the end of this decade. A state of the art suite of neutron scattering instruments will be made available to address a wide range of scientific fields in fundamental and materials science. Powered by the world’s most advanced linear proton accelerator, ESS will enable cutting-edge research in materials science, energy, health, and the environment for decades to come.

Join us in shaping the future of science - from the ground up.

About the role:

The Scientific Support Division at ESS is looking for an Deuteration Chemist to support the ESS neutron user program. The Deuteration group at ESS operates a support laboratory for scientific users of the ESS neutron instruments with a focus on providing deuterium-labelled samples via both chemical synthesis and biological deuteration in cell cultures. We support scientists from material, life science and soft matter communities using a broad range neutron scattering techniques.

In this role, you'll play an important role in the synthesis of a range of deuterated molecules requested by ESS users as well as method development for chemical deuteration and collaboration with other international deuteration laboratories on chemical deuteration methods.

Day-to-day, you will:


• Execute projects as part of deuteration services for neutron experiment users, including the production, purification and characterization of organic molecules through a variety of synthesis routes and analytical methods.
• Maintain and operate the chemical deuteration laboratory at ESS, in collaboration with the Support Laboratories group.
• Contribute to the planning, organization and operation of deuteration services including proposal calls for deuteration, feasibility reviews and proposal work scheduling.
• Participate in scientific collaborations with internal and external stakeholders and contribute to publications in peer-reviewed journals and conference proceedings.

This is a full-time, permanent position based at the ESS Campus in Lund, Sweden.

About you:

We're seeking an experienced and highly motivated synthetic organic chemist with a PhD and a strong track record of custom synthesis for research use, scientific publications, and practical problem-solving. In addition to designing synthetic pathways and optimising purification methods, you also bring deep expertise in modern analytical techniques - including NMR, HPLC, MS, LCMS, GCMS, UV-Vis, and IR.

You take pride in delivering reliable results on time, and you thrive in both independent and collaborative settings. Comfortable working across disciplines, you bring a proactive mindset and an eagerness to contribute to a fast-paced, international research environment. Communicating clearly in English - both written and spoken - comes naturally to you, and you're confident engaging with colleagues from a wide range of technical backgrounds.

If you’ve worked with deuteration or hydrogen/deuterium exchange reactions, that’s a strong advantage. So is experience operating pressure vessels or Parr reactors, scouting novel synthetic routes, or supporting user-driven synthesis in research or contract environments. You’re someone who wants to contribute to the bigger picture - not just the chemistry, but also the critical importance of lab safety, shared infrastructure, and keeping instruments in top condition. Most importantly, you bring curiosity, scientific rigour, and a team-oriented spirit to everything you do.

To apply:


A career at ESS gives you the opportunity to contribute to the future discoveries within neutron science at a stunning, brand-new workplace filled with innovative minds and brilliant people from across the globe. We offer market competitive, individualised compensation which is differentiated according to role, responsibilities, individual skills, abilities and achievements as well as monthly pension contributions on top of your salary.

If you see yourself in what we’re looking for, please provide your CV and motivation letter in English by clicking on “apply” and following the instructions. Please be aware that we can only accept direct applications made via the ESS website. Submit your application as soon as you can and quote the job reference number ESD-68099 in your application.

This role requires additional background screening processes and health and safety checks, which will be performed during the recruitment process.

For further information regarding the position, please contact Talent Acquisition Specialist Daniel Nordin Baker on [email protected] or Hanna Wacklin-Knecht - Head of the Scientific Support Division - via [email protected] 

For trade union information, please contact Unionen representative Mikael Johansson on [email protected] or SACO/Swedish Association of Graduate Engineers representative Marc Kickulies at [email protected] Visa mindre

Electronics Engineer

The European Spallation Source is one of the largest science and technology infrastructure projects being built today. The project includes the most powerful linear proton accelerator ever built, a five-tonne, helium-cooled tungsten target wheel, 15 state-of-the-art neutron instruments, a suite of laboratories, and a supercomputing data management and software development centre. In the context of its history and future as a scientific organisation, howeve... Visa mer
The European Spallation Source is one of the largest science and technology infrastructure projects being built today. The project includes the most powerful linear proton accelerator ever built, a five-tonne, helium-cooled tungsten target wheel, 15 state-of-the-art neutron instruments, a suite of laboratories, and a supercomputing data management and software development centre. In the context of its history and future as a scientific organisation, however, it is more than the sum of its parts. It is a brand-new Big Science organisation and being built from the ground up.

Come and shape the future of science with us.

About the role:

ESS is at an exciting turning point. It is in transition from being a construction site, to being an operating facility. To help us realise our goal of being the most powerful neutron source in the world, we now need an Electronics Engineer to join our Protection Systems Group.

In this critical role, you will interact with various ESS stakeholders to define requirements, design and develop embedded subsystems for machine protection. Broadly speaking, this will involve documenting/analysing requirements, participating in creating test and validation plans according to requirements, designing embedded system solutions, preparing for technical reviews, troubleshooting and optimising existing solutions, supporting the delivered systems as well as documenting requirements for machine protection systems (e.g. Fast Interlock System for Target).

This is a permanent position based based at the ESS campus in Lund, Sweden.


About you:

To thrive with us in the Protection Systems Group you need to be driven, responsive and good at spotting both problems and opportunities. You need to be a highly motivated person who isn’t afraid to get stuck in from day one.

First and foremost, we need someone who is suitably qualified and experienced. Ideally, you will have appropriate technical qualifications, however relevant experience in a similar role is more critical than the type of qualification you hold. For this position, we need someone with a proven track record of working with hardware for electronics and digital electronics, as well as significant experience of modern FPGAs (Xilinx IP cores, Microblaze, etc.). Knowledge of uTCA systems would be an asset.

It would be a distinct advantage if you have prior experience of working with analog electronics, signal standards such as LVDS, RS485, TTL and communication standards such as SPI, I2C, UART. The ideal candidate will be familiar with optical components such as SFP and/or fibers and will be fluent in C/C++/Python programming languages. Linux knowledge would be highly advantageous for this role.

We are building ESS from the ground up, so we need someone who is comfortable not only following procedures, but also creating them. We attach great importance to personality and attitude, so we're looking for a real team player: Someone who is sociable, has excellent communication skills, who likes to collaborate with different people and who is committed to helping this amazing project to realise its full potential. We need a hands-on self-starter who is able to work in a structured, orderly, responsible and – most importantly – safe way.

The working language of ESS is English, and we need someone who can start as soon as possible.


To apply:

A career at ESS gives you the opportunity to contribute to the future discoveries within neutron science at a stunning, brand-new workplace filled with innovative minds and brilliant people from across the globe. We offer market competitive, individualised compensation which is differentiated according to role, responsibilities, individual skills, abilities and achievements as well as monthly pension contributions on top of your salary.

If you see yourself in what we’re looking for, please provide your CV and motivation letter in English by clicking on “apply” and following the instructions. Please be aware that we can only accept direct applications made via the ESS website. Submit your application as soon as you can and quote the job reference number ESD-67730 in your application.

This role requires additional background screening processes and health and safety checks, which will be performed during the recruitment process.

For further information regarding the position, please contact Talent Acquisition Specialist Daniel Nordin Baker on [email protected] or Protection Systems Group Leader Annika Nordt via [email protected]  

For trade union information, please contact Unionen representative Mikael Johansson on [email protected] or SACO/Swedish Association of Graduate Engineers representative Marc Kickulies at [email protected] Visa mindre

Support Section Leader - Neutron Detector Group

The European Spallation Source (ESS) is one of the largest science and technology infrastructure projects being built today. Powered by the world’s most advanced linear proton accelerator, ESS will enable cutting-edge research in materials science, energy, health, and the environment for decades to come. Join us in shaping the future of science - from the ground up. About the role: ESS is entering a new era. We are transitioning from construction to ope... Visa mer
The European Spallation Source (ESS) is one of the largest science and technology infrastructure projects being built today. Powered by the world’s most advanced linear proton accelerator, ESS will enable cutting-edge research in materials science, energy, health, and the environment for decades to come.

Join us in shaping the future of science - from the ground up.

About the role:

ESS is entering a new era. We are transitioning from construction to operations, and our Detector Group (DetG) is central to this evolution. We are now looking for an experienced and people-focused scientist or engineer to lead our Support Section within the Detector Group.

In this leadership role, you’ll be responsible for supporting the growth, performance, and wellbeing of a multi-disciplinary team of detector scientists and engineers. You will act as a bridge between DetG Support Section members and senior group leadership, helping shape strategy while ensuring that individual voices are heard and supported. The role itself is split into a 40% management position with a 60% detector scientist responsibility.

Alongside your leadership responsibilities, you will also remain technically active, contributing directly to detector R&D projects that match your expertise. You’ll play a visible role in the development of neutron detection systems — supporting everything from early-stage design through to integration, commissioning, and scientific use.

What you’ll do:


• Lead, manage, and mentor the Support Section of the Detector Group.
• Provide career guidance and development support to section members.
• Represent the Support Section in strategic and operational discussions with senior DetG leadership.
• Contribute technically to ongoing and future detector development initiatives.
• Present scientific and technical work at internal reviews, external conferences, and in publications.
• Ensure compliance with safety practices, quality standards, and engineering documentation protocols.

This is a three-year, fixed-term position and is based at the ESS Campus in Lund, Sweden.

About you:

You hold a PhD in physics, engineering, or related, and can demonstrate a strong academic background and several years of highly related experience. Your experience preferentially includes leading a post-PhD neutron detector development project which has involved the ESS detector community. You enjoy working with people, and are approachable, respectful, and collaborative by nature. You work to see every individual, have a talent for considering perspectives different from your own, and are committed to the provision of a positive everyday work environment. You have demonstrable organizational and managerial skills and are knowledgeable of and versed in the ESS way-of-working.

We are building ESS from the ground up, so we need someone who is comfortable not only following procedures, but also creating them. We attach great importance to personality and attitude, so we're looking for a real team player. Excellent communication and interpersonal skills are vital for effective collaboration with a diverse group of scientists, engineers, and technical staff within a multidisciplinary team where everyone is committed to helping this amazing project to realise its full potential. We need a hands-on self-starter who is able to work in a structured, orderly, responsible and – most importantly – safe way.

The working language of ESS is English and we need someone who can start as soon as possible.

To apply:

A career at ESS gives you the opportunity to contribute to the future discoveries within neutron science at a stunning, brand-new workplace filled with innovative minds and brilliant people from across the globe. We offer market competitive, individualised compensation which is differentiated according to role, responsibilities, individual skills, abilities and achievements as well as monthly pension contributions on top of your salary.

If you see yourself in what we’re looking for, please provide your CV and motivation letter in English by clicking on “apply” and following the instructions. Please be aware that we can only accept direct applications made via the ESS website. Submit your application as soon as you can and quote the job reference number ESD-68370 in your application.

This role requires additional background screening processes and health and safety checks, which will be performed during the recruitment process.

For further information regarding the position, please contact Talent Acquisition Specialist Daniel Nordin Baker on [email protected] or Detector Group Leader Kevin Fissum via [email protected]

For trade union information, please contact Unionen representative Mikael Johansson on [email protected] or SACO/Swedish Association of Graduate Engineers representative Marc Kickulies at [email protected] Visa mindre

Automation Engineer- Motion Safety

The European Spallation Source ERIC (ESS) is a partnership organisation of 13 European member countries located in the city of Lund, Sweden. The ESS is one of the largest science and technology infrastructure projects being built today. In the context of its history and future as a scientific organisation, however, it is more than the sum of its parts. It is a brand-new Big Science organisation, and we are building it from the ground up.   Come and build ... Visa mer
The European Spallation Source ERIC (ESS) is a partnership organisation of 13 European member countries located in the city of Lund, Sweden. The ESS is one of the largest science and technology infrastructure projects being built today. In the context of its history and future as a scientific organisation, however, it is more than the sum of its parts. It is a brand-new Big Science organisation, and we are building it from the ground up.  

Come and build the future of Science with us!  

About the role

The ESS is at an exciting turning point - it is in transition from being a construction site, to being an operating facility. To help us realise our goal of being the most powerful neutron source in the world, we are now seeking to appoint an Automation Engineer for the Motion Control & Automation Group (MCAG). The MCAG is responsible for deploying PLC motion control systems to the Neutron Scattering Instruments, delivered by European in-kind partners to ESS. The task of the group is to develop standards for motion at ESS and work with partners to implement these across the whole facility. The focus of the group is to support the construction of neutron instruments in NSS.

The position requires an expert in Motion Control and Functional Safety of Moving Machinery especially for the evaluation and implementation of motion safety requirements into the Safety-Related Parts of the Control System (SRP/CS).

Your main area of responsibility as an Automation Engineer for Motion Safety will be to represent the efforts on Functional Safety of Moving Machinery for Neutron Instruments within the Common Motion Control & Automation (CMCA) Project.

In the construction phase:


• Coordinate with the instrument team in evaluating the motion hazards; define & document motion safety requirements according to EN ISO 12100 and 13849.
• Support the MCA eplan team in designing and verifying the necessary safety circuits.
• Test and validate the system after installation.
• Prepare and compile all necessary documentation and represent CMCA in the Instrument Safety Readiness Reviews (ISRR).
• Point of contact for colleagues and in-kind partners in this competence area.
• Communicate and link between external safety experts, the different Instruments Teams, in-kind partners, the ESS MCAG and other ESS groups relevant for motion safety.

In the operation phase:
• Constantly apply above tasks after large service, reconstruction or enhancement/ enlargement measures of Neutron Instruments.
• Organise the regular hazard evaluations and validation measures for experiments on instruments especially on user-owned equipment.
• Support user operation by evaluating for motion safety; implement and validate

This is a permanent position based in Lund, Sweden, and we need someone who can start as soon as practically possible.

About you

To thrive in this role, we believe that you have a university degree (MSc, BSc) in Electrical or Mechatronic Engineering with a strong focus on Motion Control and Automation. You have experience in the evaluation, design, test, validation and documentation of functional safety systems in industrial or scientific environment. Experience in managing small development projects and interfacing with scientists and scientific project managers is important.

Furthermore, you have:


• Knowledge about the workflow of implementing functional safety in moving machinery, preferably according to EN ISO 13849 and EN 61800-5-2.
• Experience in preparing documentation according to the engineering workflow of a functional safety system to comply with the relevant European directives and standards.
• Fluency in written and spoken English.

Additional experiences that will be an advantage for the appointed candidate include: 


• Experience in the design of motion control systems preferably for scientific large-scale user facilities
• Knowledge of scientific instruments and its associated motion control and safety techniques.

We believe that you enjoy communication and collaborating with a large number of internal and external stakeholders, and you feel comfortable working in an international environment. You should be self-motivated and be used to make decisions and deliver according to deadlines and milestones. Writing and documenting comes naturally to you, and you have confidence in organising and running efficient and successful meetings. 

Interested? We sure hope so.  

If you see yourself in what we’re looking for, please provide your CV and motivation letter in English by clicking on “apply” and following the instructions. Please be aware that we can only accept direct applications made via the ESS website. We will review applications continuously, so please apply as soon as you can. The deadline for applications is 07 July, 2025 at the latest.

Certain roles at ESS require health and safety and/or security checks, which may be carried out during the recruitment process.  

For more information regarding the ESS recruitment process, please see https://europeanspallationsource.se/careers or contact Recruitment Officer Kathryn Quaak at [email protected]  

For further information regarding the position, please contact the hiring manager Thomas Gahl at [email protected]  

For trade union information, please contact Unionen representative Mikael Johansson at [email protected] or SACO/Swedish Association of Graduate Engineers representative Marc Kickulies at [email protected]  

We look forward to receiving your application! Visa mindre

Automation & Control System Engineer

The European Spallation Source is one of the largest science and technology infrastructure projects being built today. The project includes the most powerful linear proton accelerator ever built, a five-tonne, helium-cooled tungsten target wheel, 15 state-of-the-art neutron instruments, a suite of laboratories, and a supercomputing data management and software development centre. In the context of its history and future as a scientific organisation, howeve... Visa mer
The European Spallation Source is one of the largest science and technology infrastructure projects being built today. The project includes the most powerful linear proton accelerator ever built, a five-tonne, helium-cooled tungsten target wheel, 15 state-of-the-art neutron instruments, a suite of laboratories, and a supercomputing data management and software development centre. In the context of its history and future as a scientific organisation, however, it is more than the sum of its parts. It is a brand-new Big Science organisation and we are building it from the ground up.

Come and build the future of Science with us!

About the role:

The ESS is at an exciting turning point. It is in transition from being a construction site, to being an operating facility. To help us realise our goal of being the most powerful neutron source in the world, we are now looking for an Automation & Control System Engineer to join the Automation Section, located within our Integrated Control Systems (ICS) Division.

The scope of the Automation Section is to design, develop, deliver and maintain control systems based on industrial automation technology such as Programmable Logic Controllers (PLC) and to integrate them with the EPICS (Experimental Physics and Industrial Control System) software infrastructure. The Automation Section develops and maintains also the control system operator interfaces (OPIs), as well as the archive and alarm configurations of the PLC-based control systems.

As an Automation and Control System Engineer at ESS your responsibilities will be the following:


• Lead the development, integration, verification, and validation of control systems, ensuring compliance with relevant procedures and standards.
• Define schedule and costs while exploring innovative approaches and conceptualizing solutions.
• Document design/development
• Review other engineering designs
• Stay current with emerging start-of-the-art technologies.
• Collaborate with system owners to facilitate successful deployment of integrated control systems.
• Provide technical support to team members on PLC technologies and EPICS integration.
• Develop and maintain key control projects, including the new PLC/EPICS Integrator tool.

About you:

As a person, you are proactive, self-motivated, responsible, structured and eager to grow in a fast-paced, impact-driven environment. You enjoy working both independently and together with others within a team. You are comfortable communicating with both technical teams and external stakeholders.

We believe that you meet the following qualifications:


• Master’s degree in Automation Engineering, Electrical Engineering, or a related field.
• Proven experience in control system design and implementation within a research facility or industrial setting.
• Possess strong expertise in PLC programming, according to standard IEC 61131-3, Siemens tools such as Openness and Test Suite Advanced, EPICS software tools. including SNL and Sequencer module.
• Possess excellent knowledge of Python, C/C++. Knowledge of pytest and PySide6 modules is an advantage
• Familiarity with accelerator systems technology is advantageous.
• Strong skills in technical writing, reporting, and documentation.
• Strong ability in independent problem-solving and solution development.
• Proficient in communication across diverse teams to support effective collaboration.
• Excellent oral and written English skills

Duration & Location

This is a full-time, permanent position based at the ESS Campus in Lund, Sweden.

What can we offer?

Aside from the chance to work at truly unique big science project, you can also expect:


• An opportunity to contribute to the future discoveries within neutron science.
• A stunning, brand-new workplace filled with innovative minds and brilliant people from across the globe.
• A challenging, innovative and stimulating work environment.
• Market competitive compensation that is individual and differentiated according to role, responsibilities, individual skills, abilities and achievements.
• 30 days of annual leave, as well as more than 10 days of public holiday and company days off or days with limited working hours.
• Monthly pension contributions on top of your salary.
• Flexible working arrangements and a real work-life balance.

If you see yourself in what we’re looking for, please provide your CV and motivation letter in English by clicking on “apply” and following the instructions. Please be aware that we can only accept direct applications made via the ESS website.

Certain roles at ESS require health and safety checks and/or security clearance procedures, which will be performed as part of the recruitment process.

We review applications continuously, so don’t miss out! Submit your application as soon as you can and quote the job reference number ESD-66728 in your application.

For more information regarding the ESS recruitment process, please contact Sara Tenggren – HR Generalist – at [email protected]. For further information regarding the position, please contact Alfio Rizzo –Section Leader Automation – via [email protected]

For trade union information, please contact Unionen representative Mikael Johansson on [email protected] or SACO/Swedish Association of Graduate Engineers representative Marc Kickulies at [email protected] 

We look forward to receiving your application soon! Visa mindre

Electrical and Control Systems Technician

The European Spallation Source is one of the largest science and technology infrastructure projects being built today. The project includes the most powerful linear proton accelerator ever built, a five-tonne, helium-cooled tungsten target wheel, 15 state-of-the-art neutron instruments, a suite of laboratories, and a supercomputing data management and software development centre. In the context of its history and future as a scientific organisation, howeve... Visa mer
The European Spallation Source is one of the largest science and technology infrastructure projects being built today. The project includes the most powerful linear proton accelerator ever built, a five-tonne, helium-cooled tungsten target wheel, 15 state-of-the-art neutron instruments, a suite of laboratories, and a supercomputing data management and software development centre. In the context of its history and future as a scientific organisation, however, it is more than the sum of its parts. It is a brand-new Big Science organisation and we are building it from the ground up.

Come and build the future of Science with us!

About the role:

We are seeking to appoint a Technician to join our Neutron Chopper Systems group. A neutron chopper is a specialised electromechanical device that can shape a particle beam using disks that rotate at very high speeds (20,000 rpm). As a Technician for Neutron Chopper Systems at ESS, you will play a key role in supporting the design, development, and maintenance of complex control, electrical and mechanical systems integral to the operation of the facility. You will provide expert technical advice to electrical, mechatronics, control and mechanical engineers, offering insights on production methods, best practices, and process improvements as needed.

Your main areas of responsibilities as a Technician for Neutron Chopper Systems will include:


• Maintenance, assembly, manufacturing, installation, commissioning and testing of electrical, electronic and mechanical high speed rotating systems (motors, PLC, controllers, servo drives, cabinets, sensors, cabling).
• Cabinet/rack integration, including layout, mounting of components, wiring of signal and power cabling, and final system verification.
• Routing and terminating electrical and data cabling (including shielding, crimping and connecting and measuring) in accordance with ESS standards.
• Assisting in vibration and balancing tests of rotating components to ensure safe and reliable operation at high speeds.
• To offer expert technical advice to electrical, mechatronics and control engineers in relation to productions methods, best practice and as required.
• Handling workshop equipment, tools, including small soldering. Small and large component assembly and handling (including components >100kg).
• Execution of the R&D, testing programs and quality control process, as required.
• Procurement of electrical electronic and control parts and keeping stock control and inventory.
• Maintaining the chopper facilities ready for use and ensuring the safety of these working spaces.
• Other workshop related tasks, including administrative aspects and documentation.

Some limited travelling and working abroad may be required. This is a permanent position with a six-month probationary period and is based at the ESS campus in Lund, Sweden. 

About you:

We are looking for a technician with practical experience in technical workshops and, ideally, building demonstrators, handling and maintaining medical equipment or similar complex devices. In particular, you should have the following experience:


• A certified professional education in the field of Mechanical, Electromechanics or Mechatronic Technology (electrical, mechatronics technician, Industrial technician or similar certified professions) would be an advantage.
• 5 or more years of experience in an engineering or other highly technical environment is a prerequisite.
• Proven mechanical dexterity, able to manipulate precision jobs and to assemble complex parts.
• Certified training for work on Low Voltage Systems (<400V) and/or experience of electrical assembly of cabinets and/or troubleshooting PLCs and motion control systems would be considered a strong advantage.
• The ability to read and interpret wiring diagrams, schematics, and mechanical drawings Certified training for work on Low Voltage Systems (<400V) and/or experience of troubleshooting PLCs and motion control systems would be considered a strong advantage.
• Practical experience with workshop electrical measuring equipment, isolation, resistance, impedance, etc.
• Very good oral and written English skills are a prerequisite; knowledge of Swedish would be an advantage.

Wide-ranging experience of mechanical or electronic processes and practices is desirable. Hands-on experience with rack integration, signal and power cabling, cable termination, and grounding practices as well as familiarity with servo and stepper motors, drives, and encoder/resolver systems would be an advantage.

Other requirements important to the position are the ability to have an attention to detail, the ability to take on multiple tasks, adaptability, be a team player, and having a strong safety ethic.

What can we offer?

A career at ESS gives you the opportunity to contribute to the future discoveries within neutron science at a stunning, brand-new workplace filled with innovative minds and brilliant people from across the globe. We offer market competitive, individualised compensation which is differentiated according to role, responsibilities, individual skills, abilities and achievements as well as monthly pension contributions on top of your salary. You can learn more about the exciting benefits of working at ESS on our careers page.

If you see yourself in what we’re looking for, please provide your CV and motivation letter in English by clicking on “apply” and following the instructions. Please be aware that we can only accept direct applications made via the ESS website.

Certain roles at ESS require health and safety checks and/or security clearance procedures, which will be performed as part of the recruitment process.

We review applications continuously, so don’t miss out! Submit your application as soon as you can and quote the job reference number ESD-50891 in your application.

For more information regarding the ESS recruitment process, please contact Daniel Nordin Baker – Recruitment partner – at [email protected]. For further information regarding the position, please contact the hiring manager on [email protected] 

For trade union information, please contact Unionen representative Mikael Johansson on [email protected] or SACO/Swedish Association of Graduate Engineers representative Marc Kickulies at [email protected] 

We look forward to receiving your application soon! Visa mindre

Safety Engineer for GDS

The European Spallation Source is one of the largest science and technology infrastructure projects being built today. The project includes the most powerful linear proton accelerator ever built, a five-tonne, helium-cooled tungsten target wheel, 15 state-of-the-art neutron instruments, a suite of laboratories, and a supercomputing data management and software development centre. In the context of its history and future as a scientific organisation, howeve... Visa mer
The European Spallation Source is one of the largest science and technology infrastructure projects being built today. The project includes the most powerful linear proton accelerator ever built, a five-tonne, helium-cooled tungsten target wheel, 15 state-of-the-art neutron instruments, a suite of laboratories, and a supercomputing data management and software development centre. In the context of its history and future as a scientific organisation, however, it is more than the sum of its parts. It is a brand-new Big Science organisation and being built from the ground up.

Come and shape the future of science with us.

About the role:

The ESS is at an exciting turning point. It is in transition from being a construction site, to being an operating facility. To help us realise our goal of being the most powerful neutron source in the world, we now need an Engineer for Safety Critical Systems to join our Protection Systems Group.

In this critical role, you will act as System Coordinator for dedicated Gas Detection Systems (GDS). This means that you will be the main contact person for questions/issues related to the dedicated GDSs. In addition, you will also capture requirements, needs and plans related to system life cycle management, drive and coordinate development activities throughout all design, verification, operational, and maintenance phases with allocated resources and relevant stakeholders, resolve technical issues and coordinate the development of the documentation for the dedicated GDSs.

Other tasks within this role will include leading the activities for seamless integration of designated GDSs into interfacing systems and parent system operation, providing support during test phases, and ensuring?safety functions for the dedicated GDSs are derived consistently from risk assessment documents. You will also make sure that all relevant functional requirements are captured consistently.

This is a permanent position based at the ESS campus in Lund, Sweden.

About you:

To thrive with us in the Protection Systems Group you need to be driven, responsive and good at spotting both problems and opportunities. You need to be a highly motivated person who isn’t afraid to get stuck in from day one.
First and foremost, we need someone who is suitably qualified and experienced. Ideally, you will have appropriate technical qualifications, however relevant experience in a similar role is more critical than the type of qualification you hold. For this position, we need someone with a proven track record of performing engineering design and related duties and ensuring that designs comply with relevant standards, regulations and procedures and that designs are in line with ESS availability goals.

It would be a distinct advantage if you have prior experience with development, verification and documentation of gas detection systems.

We are building ESS from the ground up, so we need someone who is comfortable not only following procedures but also creating them. We attach great importance to personality and attitude, so we're looking for a real team player: Someone who is sociable, has excellent communication skills, who likes to collaborate with different people and who is committed to helping this amazing project to realise its full potential. We need a hands-on self-starter who can work in a structured, orderly, responsible and – most importantly – safe way.

The working language of ESS is English, and we need someone who can start as soon as possible.

To apply:

A career at ESS gives you the opportunity to contribute to the future discoveries within neutron science at a stunning, brand-new workplace filled with innovative minds and brilliant people from across the globe. We offer market competitive, individualised compensation which is differentiated according to role, responsibilities, individual skills, abilities and achievements as well as monthly pension contributions on top of your salary.

If you see yourself in what we’re looking for, please provide your CV and motivation letter in English by clicking on “apply” and following the instructions. Please be aware that we can only accept direct applications made via the ESS website. Submit your application as soon as you can and quote the job reference number ESD-68062 in your application.

This role requires additional background screening processes and health and safety checks, which will be performed during the recruitment process.

For further information regarding the position, please contact Talent Acquisition Specialist Daniel Nordin Baker on [email protected] or Protection Systems Group Leader Annika Nordt via [email protected]  

For trade union information, please contact Unionen representative Mikael Johansson on [email protected] or SACO/Swedish Association of Graduate Engineers representative Marc Kickulies at [email protected] Visa mindre

Safety Engineer for PSS

The European Spallation Source is one of the largest science and technology infrastructure projects being built today. The project includes the most powerful linear proton accelerator ever built, a five-tonne, helium-cooled tungsten target wheel, 15 state-of-the-art neutron instruments, a suite of laboratories, and a supercomputing data management and software development centre. In the context of its history and future as a scientific organisation, howeve... Visa mer
The European Spallation Source is one of the largest science and technology infrastructure projects being built today. The project includes the most powerful linear proton accelerator ever built, a five-tonne, helium-cooled tungsten target wheel, 15 state-of-the-art neutron instruments, a suite of laboratories, and a supercomputing data management and software development centre. In the context of its history and future as a scientific organisation, however, it is more than the sum of its parts. It is a brand-new Big Science organisation and being built from the ground up.

Come and shape the future of science with us.

About the role:

ESS is at an exciting turning point. It is in transition from being a construction site, to being an operating facility. To help us realise our goal of being the most powerful neutron source in the world, we now need an Engineer for Safety Critical Systems to join our Protection Systems Group.

In this critical role, you will act as System Coordinator for dedicated Personnel Safety Systems (PSS). This means that you will be the main contact person for questions/issues related to the dedicated PSSs. In addition, you will also capture requirements, needs and plans related to system life cycle management, drive and coordinate development activities throughout all design, verification, operational, and maintenance phases with allocated resources and relevant stakeholders, resolve technical issues and coordinate the development of the documentation for the dedicated PSSs.

Other tasks within this role will include leading the activities for seamless integration of designated PSSs into interfacing systems and parent system operation, providing support during test phases, and ensuring?safety functions for the dedicated PSSs are derived consistently from risk assessment documents. You will also make sure that all relevant functional requirements are captured consistently.

This is a permanent position based at the ESS campus in Lund, Sweden.

About you:

To thrive with us in the Protection Systems Group you need to be driven, responsive and good at spotting both problems and opportunities. You need to be a highly motivated person who isn’t afraid to get stuck in from day one.

First and foremost, we need someone who is suitably qualified and experienced. Ideally, you will have appropriate technical qualifications, however relevant experience in a similar role is more critical than the type of qualification you hold. For this position, we need someone with a proven track record of performing engineering design and related duties and ensuring that designs comply with relevant standards, regulations and procedures and that designs are in line with ESS availability goals.

It would be a distinct advantage if you have prior experience with development, verification and documentation of interfaces between personnel safety systems and equipment in an accelerator, or other similar "big science" facilities.

We are building ESS from the ground up, so we need someone who is comfortable not only following procedures but also creating them. We attach great importance to personality and attitude, so we're looking for a real team player: Someone who is sociable, has excellent communication skills, who likes to collaborate with different people and who is committed to helping this amazing project to realise its full potential. We need a hands-on self-starter who can work in a structured, orderly, responsible and – most importantly – safe way.

The working language of ESS is English, and we need someone who can start as soon as possible.

To apply:

A career at ESS gives you the opportunity to contribute to the future discoveries within neutron science at a stunning, brand-new workplace filled with innovative minds and brilliant people from across the globe. We offer market competitive, individualised compensation which is differentiated according to role, responsibilities, individual skills, abilities and achievements as well as monthly pension contributions on top of your salary.

If you see yourself in what we’re looking for, please provide your CV and motivation letter in English by clicking on “apply” and following the instructions. Please be aware that we can only accept direct applications made via the ESS website. Submit your application as soon as you can and quote the job reference number ESD-68063 in your application.

This role requires additional background screening processes and health and safety checks, which will be performed during the recruitment process.

For further information regarding the position, please contact Talent Acquisition Specialist Daniel Nordin Baker on [email protected] or Protection Systems Group Leader Annika Nordt via [email protected]  

For trade union information, please contact Unionen representative Mikael Johansson on [email protected] or SACO/Swedish Association of Graduate Engineers representative Marc Kickulies at [email protected] Visa mindre

Instrument Scientist for LOKI

The European Spallation Source (ESS) is a partnership organization of 13 European member countries located in the city of Lund, Sweden. The ESS is hiring motivated and inspiring people from across the globe to design, construct and operate the world’s most powerful neutron source. We seek collaborative, talented people in a range of fields who are excited about playing a part in the future of science in Europe. The LoKI instrument at ESS (currently within... Visa mer
The European Spallation Source (ESS) is a partnership organization of 13 European member countries located in the city of Lund, Sweden. The ESS is hiring motivated and inspiring people from across the globe to design, construct and operate the world’s most powerful neutron source. We seek collaborative, talented people in a range of fields who are excited about playing a part in the future of science in Europe.

The LoKI instrument at ESS (currently within the Neutron Scattering Systems Division) is looking for an Instrument Scientist. This is a critical role that exists within the Division of Large-Scale Structures. LoKI is a small-angle neutron scattering instrument designed specifically with the needs of the soft matter, materials, and bio-science communities in mind, and will be among the first instruments to become operational at ESS. Supported by the LOKI team including the lead scientist, data scientist, operations engineer, and our in-kind partner, ISIS Neutron and Muon Source, you will be tasked with helping to deliver the LOKI instrument to hot commissioning and prepare the instrument for user operations. Further, your responsibilities and qualifications will include:

About the team:

The tasks and responsibilities of the LOKI instrument team include but are not limited to:


• Finalize installation of the LOKI instrument
• Commissioning of the instrument, both with and without neutrons
• Plan and implement further developments and upgrades of the instrument
• Deliver state-of-the-art scientific capabilities for internal and external users to enable the wider science community to advance science and technology
• Push the state-of-the-art capabilities of small-angle neutron scattering

Your role and responsibilities:


• Work with the LOKI team, and our in-kind partner ISIS, to plan and execute the instrument cold and hot commissioning.
• Help to prepare “First Science” experiments to be carried out during the initial operation phase of ESS.
• Provide expertise in the scientific application of small-angle neutron scattering and in small-angle neutron scattering method development.
• Continue and develop your own research in line with the LOKI science case.
• Establish and maintain collaborations with universities, laboratories and other relevant actors.
• Engage with the international small-angle scattering community, e.g. through presentations at conferences/workshops and experiments at other facilities.
• Once in operation, support the user programme at ESS by performing local contacting duties and collaborative research.

Required qualifications:


• PhD in the physical sciences with research interests and publication record aligned with the science focus of the LOKI instrument, which includes soft matter, biophysics, and materials science.
• Experience and technical interest in small-angle neutron scattering, preferably using time-of-flight techniques, including knowledge of data treatment and modeling.
• Ability to work in a team with people of a variety of disciplines in an international collaboration.
• Excellent oral and written English skills
• Flexibility to travel. The project requires occasional travel between ESS and partner facilities.

Additional desirable qualifications and experience:


• Operation and development of neutron instrumentation and/or instrument control.
• Programming experience in Python.
• Complementary experience from and competence in small-angle X-ray scattering.

Duration & Location

The position is a 3-year full-time position located in Lund, Sweden.

Application & Contact

Please provide your CV in English by clicking on “apply” and following the instructions.

The position will be open until filled.

For more information regarding the ESS recruitment process, please follow this link https://europeanspallationsource.se/ess-recruitment- process.

For further information regarding the position, please contact the Line Manager, Andrew Jackson, Head of the Large-Scale Structures Division, [email protected].

For further information regarding the recruitment process, please contact Recruitment Partner, Kate Quaak, [email protected].

For trade union information please contact Unionen / Conny Wendt at +46 72 179 24 63 or SACO / Swedish Association of Graduate Engineers/ Yngve Levinson at +46 72 179 21 65

We look forward to receiving your application! Visa mindre

Main Control Room Shift Leader

The European Spallation Source is one of the largest science and technology infrastructure projects being built today. The project includes the most powerful linear proton accelerator ever built, a five-tonne, helium-cooled tungsten target wheel, 15 state-of-the-art neutron instruments, a suite of laboratories, and a super-computing data management and software development centre. In the context of its history and future as a scientific organisation, howev... Visa mer
The European Spallation Source is one of the largest science and technology infrastructure projects being built today. The project includes the most powerful linear proton accelerator ever built, a five-tonne, helium-cooled tungsten target wheel, 15 state-of-the-art neutron instruments, a suite of laboratories, and a super-computing data management and software development centre. In the context of its history and future as a scientific organisation, however, it is more than the sum of its parts. It is a brand new Big Science organisation and we are building it from the ground up.

Come and build the future of Science with us!

About the role:

As a Control Room Shift Leader, you will play a pivotal role in ensuring the safe and efficient operation of the world’s most powerful neutron source. Operating within our state-of-the-art Main Control Room – which runs 24/7 - you will lead shifts that monitor and operate the neutron source and its technical infrastructure, while also supervising operators and making real-time decisions about beam operations whilst ensuring system safety.

However, this role comes with several unique challenges that require resilience, adaptability, and a proactive mindset:


• Smaller Team, Broader Responsibilities: ESS is a brand new facility with a tight team - meaning you will need to cover a wide range of tasks and responsibilities. You’ll need to see the bigger picture and manage various technical systems and infrastructure concurrently.
• Evolving Role: As ESS is a new facility still under construction and development, many of the role’s details and processes are not yet fully defined. You’ll need to be comfortable and thrive working in an environment where you collaborate with many different technical systems groups to help shape procedures, ways of working, and quickly adapt to ongoing changes.
• Shift Work: This position requires regularly working overnight and weekend shifts on an established shift pattern.
• Extensive Documentation: You will be responsible for maintaining detailed logs, updating databases, and ensuring strict compliance with operational protocols and safety regulations. There is a significant amount of technical documentation to familiarise yourself with, and it will be essential to stay on top of this as the facility develops.

As the shift leader, you are a primary contact for both radiological and conventional safety issues during your shifts. You must ensure that all operations comply with safety standards and be prepared to respond to emergencies swiftly and decisively. Additionally, you will work closely with study leaders and systems experts during machine development and commissioning shifts to balance testing needs with operational safety. Ensuring accurate logbook maintenance and keeping the Accelerator Fault Tracker database up-to-date will also be key parts of your role.

About you:

To thrive as a Main Control Room Shift Leader, you must be motivated, adaptable, and proactive, with a passion for problem-solving and a strong commitment to safety. This is a hands-on role where attention to detail, leadership, and sound decision-making are critical, especially in a 24/7 operational environment.

You should have a degree in physics, engineering, computer sciences, or a related field, coupled with several years of experience working in a particle accelerator facility or similar environment. Prior experience working in a control room with a 24/7 shift rotation is highly desirable. Knowledge of control systems (especially EPICS), and skills in software development (e.g., Python, Java, C/C++) would be an advantage.

Beyond technical background and relevant experience, we place great emphasis on the right personal skills for this particular role. The shift leader is in charge of operating the facility while on shift, and needs to execute the role in a safe and responsible manner. As you will be responsible for leading teams and ensuring smooth and safe operations, strong interpersonal skills and the right mindset are required to get this job done.

Our ideal candidate will be comfortable both following established procedures and helping develop new ones as we continue to build and refine our operations. You need to be comfortable working under pressure, making prompt and clear decisions that may involve tough choices or calculated risks. Strong interpersonal skills are essential, Given that ESS is a new facility with many evolving aspects, we are seeking someone who can adapt to change, see the broader perspective, and help establish the foundation for a successful and safe future.

Fluency in English—both written and spoken—is essential, as it is the working language at ESS. The position is permanent with six-month initial probation period and you will be based at the ESS campus in Lund, Sweden. This job can not be performed remotely.

To apply:

To apply, please provide your CV and motivation letter by clicking on “apply” and following the instructions. Please be aware that we can only accept direct applications made via the ESS website. Quote the job reference number ESD-35083 in your application. 

This position is subject to enhanced screening and background checks, which will be performed as part of the recruitment process.

For more information regarding the ESS recruitment process, please follow this link https://europeanspallationsource.se/ess-recruitment-process. For further information regarding the recruitment process, please contact Talent Acquisition Specialist Daniel Nordin Baker on [email protected] 

For trade union information, please contact Unionen representative Mikael Johansson on [email protected] or SACO/Swedish Association of Graduate Engineers representative Marc Kickulies at [email protected]

We look forward to receiving your application! Visa mindre

Postdoctoral Mechanical Engineer

The European Spallation Source is one of the largest science and technology infrastructure projects being built today. The project includes the most powerful linear proton accelerator ever built, a five-tonne, helium-cooled tungsten target wheel, 15 state-of-the-art neutron instruments, a suite of laboratories, and a supercomputing data management and software development centre. In the context of its history and future as a scientific organisation, howeve... Visa mer
The European Spallation Source is one of the largest science and technology infrastructure projects being built today. The project includes the most powerful linear proton accelerator ever built, a five-tonne, helium-cooled tungsten target wheel, 15 state-of-the-art neutron instruments, a suite of laboratories, and a supercomputing data management and software development centre. In the context of its history and future as a scientific organisation, however, it is more than the sum of its parts. It is a brand-new Big Science organisation and we are building it from the ground up.

Come and build the future of Science with us!

About the role:

ESS is at an exciting turning point. It is in transition from being a construction site, to being an operating facility. To help us realise our goal of being the most powerful neutron source in the world, we are looking for Postdoctoral Mechanical Engineer for a 2 year fixed- term position to work on the design of the ESSnuSB+ WP2 within the Work Package 2 (WP2) for Engineering & Infrastructure.

The deliverables of WP2 is the detailed design on the civil and machine design and geotechnical study that is needed on the site of European Spallation Source – ESS and the Zinkruvan site for starting realizing the ESSnuSB+. The design will consist of the Linac, Target Station (2nd), Near Detector on ESS premises and Far Detector, auxiliary systems and infrastructure. Considerations of the cost estimate for this work is also planned along.

All installations on the ESS site will have to take into account and integrate with, as well as take advantage of, the existing ESS infrastructure for the generation of spallation neutrons. Likewise, the excavation of the very large caverns 1’000 m under ground level in Zinkgruvan will have to take into account and integrate with, as well as take advantage of, the existing mining infrastructure. The WP2 will also study the requirements for the different licensing rules and legal permissions required for the ESSnuSB+ installations as well as the safety regulations imposed by the authorities.

About you:

In this position, you will be responsible for the design infrastructure for a neutrino research facility, including underground structures, support buildings, and utilities. Conducting feasibility studies and structural analysis for the proposed designs and developing cost estimates, material specifications, and construction plans. Your role will also encompass providing schedule estimations for infrastructure development and collaborating with physicists, engineers, and project managers to ensure infrastructure aligns with research needs. The role needs someone to comply with safety, environmental, and engineering standards and contribute to technical reports, and project documentation.

Requirements:


• PhD in Mechanical/Design/Structural/Civil/Electrical Engineering, Applied Physics or a related field
• Proficiency in CAD design (preferably CATIA)
• Experience with Finite Element Analysis (FEA)
• Experience in large-scale infrastructure or underground construction projects

Considered an asset:


• Background in structural analysis, and geotechnical engineering
• Knowledge with cost estimation and project scheduling tools
• Knowledge of regulatory and safety standards relevant to large infrastructure projects

In this position, working with people is a critical skill. The succesfull candidate will be able to assemble requirements from multiple scientific stakeholders and generate engineering requirements. Your skills in engineering analyzing, writing, reporting and problem solving will be tested in daily basis for this assignment that requires self-driven attitude and proactive performance. Success metrics will be delivering results to meet customer expectations adhering to rules and dollowing instructions.

This is a full-time, 2 year fixed-term role based at the ESS Campus in Lund, Sweden. It requires someone who is able to work with various groups and individuals, while also being able to drive deliverables related to the project.

The working language of ESS is English, so the ability to communicate to a very high level in English is also a requirement.

What can we offer?

Aside from the chance to work at truly unique big science project, you can also expect:  An opportunity to contribute to the future discoveries within neutron science.

 A stunning, brand new workplace filled with innovative minds and brilliant people from across the globe.  A challenging, innovative and stimulating work environment.

 Market competitive compensation that is individual and differentiated according to role, responsibilities, individual skills, abilities and achievements.

 30 days of annual leave, as well as more than 10 days of public holiday and company days off or days with limited working hours.  Monthly pension contributions on top of your salary.

If you see yourself in what we’re looking for, please provide your CV and motivation letter in English by clicking on “apply” and following the instructions. Please be aware that we can only accept direct applications made via the ESS website and be sure to quote the job reference number ESD-64502 in your application.

Certain roles at ESS require health and safety checks and/or security clearance procedures, which will be performed as part of the recruitment process.

For more information regarding the ESS recruitment process, please contact Kathryn Quaak – Recruitment partner – at [email protected]. For further information regarding the position, please contact the hiring manager via [email protected]

For trade union information, please contact Unionen representative Mikael Johansson on [email protected] or SACO/Swedish Association of Graduate Engineers representative Marc Kickulies at [email protected]

We look forward to receiving your application soon! Visa mindre

Summer worker – Radiation Protection

The European Spallation Source (ESS) in Lund, Sweden is a partnership of 13 European countries with the mission to design, construct and operate the world’s most powerful neutron source. Working with us means being part of a challenging and exciting work environment, at a stunning, brand new workplace filled with innovative minds and brilliant people from across the globe.We are now looking to appoint a summer worker for the Radiation Protection group in... Visa mer
The European Spallation Source (ESS) in Lund, Sweden is a partnership of 13 European countries with the mission to design, construct and operate the world’s most powerful neutron source.

Working with us means being part of a challenging and exciting work environment, at a stunning, brand new workplace filled with innovative minds and brilliant people from across the globe.We are now looking to appoint a summer worker for the Radiation Protection group in the Environmental Safety Health and Security division. 

About the position
The Radiation Protection group is responsible for all matters related to risks from ionising radiation for both workers and the public at the ESS site. The group is also involved in the operational activities of radioactive waste handling and is currently preparing for the future waste handling once ESS start to operate.

As a summer worker your main tasks will be to:


• support testing of the water purification plant in the radioactive waste handling facility.
• support organising and digitizing documents related to radiation protection.
• support daily tasks related to the personal dosimetry activities.
• perform testing of hand-held radiation protection instruments.

About you
To be a suitable candidate for this position, you should possess the following:


• An interest in technical and natural sciences.
• Good written and oral communication skills in English.
• Minimum age 18 years.

We believe that you enjoy communicating and collaborating with a variety of people in an international environment. You are good at taking initiative and not afraid to ask questions. You have the ability to stay focused on a given task.
 
Duration and location
This is a summer work position of one month. Planned start date is 1 July, 2025 or per agreement.
Your workplace is on-site at ESS in Lund, Sweden. 
 
How to apply
Please provide your CV in English by clicking on “apply” and following the instructions. Please note that we only accept applications via the ESS website. The last day to apply is 3 June, 2025.
 
We look forward to receiving your application!

Please be aware that we can only accept direct applications made via the ESS website.

This role requires additional background screening processes and health and safety checks, which will be performed during the recruitment process.
For more information regarding the ESS recruitment process in general, please follow this link: Careers | ESS


We have made our media choice regarding recruitments and kindly decline contact with media sellers. Visa mindre

Summer worker - X-ray Imaging

The European Spallation Source (ESS) in Lund, Sweden is a partnership of 13 European countries with the mission to design, construct and operate the world’s most powerful neutron source. Working with us means being part of a challenging and exciting work environment, at a stunning, brand new workplace filled with innovative minds and brilliant people from across the globe.  We are now looking to appoint a summer worker for the ODIN Instrument team in th... Visa mer
The European Spallation Source (ESS) in Lund, Sweden is a partnership of 13 European countries with the mission to design, construct and operate the world’s most powerful neutron source.

Working with us means being part of a challenging and exciting work environment, at a stunning, brand new workplace filled with innovative minds and brilliant people from across the globe. 

We are now looking to appoint a summer worker for the ODIN Instrument team in the Diffraction and Imaging division.

About the position
The ODIN team is responsible for developing a neutron imaging instrument that will enable time-resolved 2D and 3D studies of complex materials and processes. As a unique feature, ODIN will also include a laboratory-based X-ray point source to enable dual-modality imaging, combining neutron and X-ray techniques within the same experimental environment.

As a summer worker in the ODIN team, your main tasks will be to support the ongoing development of geometric calibration procedures for the X-ray imaging setup. This includes implementing and validating calibration routines, analyzing imaging data, and contributing to the documentation and open-source codebase. 

About you
A suitable background for this position would be:


• Ongoing or completed MSc studies in physics, engineering, imaging science, or a related field.
• Experience or coursework in imaging, image processing, mathematical modelling, or scientific programming (e.g. Python).
• Good written and oral communication skills in English.
• Minimum age 18 years.

We believe that you enjoy solving problems, working independently, and collaborating with a variety of people in an international environment. You are curious, self-motivated, and not afraid to ask questions or try new approaches. 

Duration and location
This is a summer work position of 4 weeks. Planned start date is June 16, 2025 or per agreement.
Your workplace is on-site at ESS in Lund, Sweden.  

How to apply
Please provide your CV in English by clicking on “apply” and following the instructions. Please note that we only accept applications via the ESS website. The last day to apply is 1 June, 2025.

Please be aware that we can only accept direct applications made via the ESS website.

This role requires additional background screening processes and health and safety checks, which will be performed during the recruitment process.

For more information regarding the ESS recruitment process in general, please follow this link: Careers | ESS


We look forward to receiving your application!



We have made our media choice regarding recruitments and kindly decline contact with media sellers. Visa mindre

Summer worker – Neutron Scattering Design Engineer

The European Spallation Source (ESS) in Lund, Sweden is a partnership of 13 European countries with the mission to design, construct and operate the world’s most powerful neutron source. Working with us means being part of a challenging and exciting work environment, at a stunning, brand new workplace filled with innovative minds and brilliant people from across the globe.We are now looking to appoint a summer worker for the Technical Projects group in t... Visa mer
The European Spallation Source (ESS) in Lund, Sweden is a partnership of 13 European countries with the mission to design, construct and operate the world’s most powerful neutron source.

Working with us means being part of a challenging and exciting work environment, at a stunning, brand new workplace filled with innovative minds and brilliant people from across the globe.We are now looking to appoint a summer worker for the Technical Projects group in the Neutron Scattering Systems division.



About the position
The Technical Projects Group is responsible for management of engineering of the neutron beam instruments, design and manufacturing of the neutron bunker and radiation shielding, design support for common projects (such as choppers, detectors, beam monitors and shutter systems), delivery of electrical infrastructure and integration of instrument electrical systems. The group is also expected to provide design support for sample environment equipment (which is part of Science Directorate project scope).

As a Design Engineer summer worker, your main tasks will be to work on design, drafting and administration work delegated by the Mechanical Engineering, Technology & Analysis Group leader.



About you
A suitable background for this position would be:


• On going university education in Engineering
• Experience of coding, particularly Python
• Work experience in Neutron Scattering Systems would be a significant advantage
• Good written and oral communication skills in English
• Minimum age 18 years.

We believe that you enjoy communicating and collaborating with a variety of people in an international environment working across many different disciplines. You are good at taking initiative and not afraid to ask questions.



Duration and location
This is a summer work position of 8 weeks. 
Planned start date is 1 July, 2025 or per agreement.

Your workplace is on-site at ESS in Lund, Sweden. 



How to apply
Please provide your CV in English by clicking on “apply” and following the instructions. Please note that we only accept applications via the ESS website. The last day to apply is 26 May, 2025.

Certain roles at ESS require health and safety and/or security checks, which may be carried out during the recruitment process.    

We look forward to receiving your application! Visa mindre

Postdoctoral Mechanical Engineer

The European Spallation Source is one of the largest science and technology infrastructure projects being built today. The project includes the most powerful linear proton accelerator ever built, a five-tonne, helium-cooled tungsten target wheel, 15 state-of-the-art neutron instruments, a suite of laboratories, and a supercomputing data management and software development centre. In the context of its history and future as a scientific organisation, howeve... Visa mer
The European Spallation Source is one of the largest science and technology infrastructure projects being built today. The project includes the most powerful linear proton accelerator ever built, a five-tonne, helium-cooled tungsten target wheel, 15 state-of-the-art neutron instruments, a suite of laboratories, and a supercomputing data management and software development centre. In the context of its history and future as a scientific organisation, however, it is more than the sum of its parts. It is a brand-new Big Science organisation and we are building it from the ground up.

Come and build the future of Science with us!

About the role:

ESS is at an exciting turning point. It is in transition from being a construction site, to being an operating facility. To help us realise our goal of being the most powerful neutron source in the world, we are looking for Postdoctoral Mechanical Engineer for a 2 year fixed- term position to work on the design of the ESSnuSB+ WP2 within the Work Package 2 (WP2) for Engineering & Infrastructure.

The deliverables of WP2 is the detailed design on the civil and machine design and geotechnical study that is needed on the site of European Spallation Source – ESS and the Zinkruvan site for starting realizing the ESSnuSB+. The design will consist of the Linac, Target Station (2nd), Near Detector on ESS premises and Far Detector, auxiliary systems and infrastructure. Considerations of the cost estimate for this work is also planned along.

All installations on the ESS site will have to take into account and integrate with, as well as take advantage of, the existing ESS infrastructure for the generation of spallation neutrons. Likewise, the excavation of the very large caverns 1’000 m under ground level in Zinkgruvan will have to take into account and integrate with, as well as take advantage of, the existing mining infrastructure. The WP2 will also study the requirements for the different licensing rules and legal permissions required for the ESSnuSB+ installations as well as the safety regulations imposed by the authorities.

About you:

In this position, you will be responsible for the design infrastructure for a neutrino research facility, including underground structures, support buildings, and utilities. Conducting feasibility studies and structural analysis for the proposed designs and developing cost estimates, material specifications, and construction plans. Your role will also encompass providing schedule estimations for infrastructure development and collaborating with physicists, engineers, and project managers to ensure infrastructure aligns with research needs. The role needs someone to comply with safety, environmental, and engineering standards and contribute to technical reports, and project documentation.

Requirements:


• D. in Mechanical/Design/Structural Engineering, or a related field
• Proficiency in CAD design (preferably CATIA)
• Experience with Finite Element Analysis (FEA)
• Experience in large-scale infrastructure or underground construction projects

Considered an asset:


• Background in structural analysis, and geotechnical engineering
• Knowledge with cost estimation and project scheduling tools
• Knowledge of regulatory and safety standards relevant to large infrastructure projects

In this position, working with people is a critical skill. The succesfull candidate will be able to assemble requirements from multiple scientific stakeholders and generate engineering requirements. Your skills in engineering analyzing, writing, reporting and problem solving will be tested in daily basis for this assignment that requires self-driven attitude and proactive performance. Success metrics will be delivering results to meet customer expectations adhering to rules and dollowing instructions.

This is a full-time, 2 year fixed-term role based at the ESS Campus in Lund, Sweden. It requires someone who is able to work with various groups and individuals, while also being able to drive deliverables related to the project.

The working language of ESS is English, so the ability to communicate to a very high level in English is also a requirement.

What can we offer?

Aside from the chance to work at truly unique big science project, you can also expect:  An opportunity to contribute to the future discoveries within neutron science.

 A stunning, brand new workplace filled with innovative minds and brilliant people from across the globe.  A challenging, innovative and stimulating work environment.

 Market competitive compensation that is individual and differentiated according to role, responsibilities, individual skills, abilities and achievements.

 30 days of annual leave, as well as more than 10 days of public holiday and company days off or days with limited working hours.  Monthly pension contributions on top of your salary.

If you see yourself in what we’re looking for, please provide your CV and motivation letter in English by clicking on “apply” and following the instructions. Please be aware that we can only accept direct applications made via the ESS website and be sure to quote the job reference number ESD-64502 in your application.

Certain roles at ESS require health and safety checks and/or security clearance procedures, which will be performed as part of the recruitment process.

For more information regarding the ESS recruitment process, please contact Kathryn Quaak – Recruitment partner – at [email protected]. For further information regarding the position, please contact the hiring manager via [email protected]

For trade union information, please contact Unionen representative Mikael Johansson on [email protected] or SACO/Swedish Association of Graduate Engineers representative Marc Kickulies at [email protected]

We look forward to receiving your application soon! Visa mindre

Summer worker – Occupational Health, Safety & Environment

The European Spallation Source (ESS) in Lund, Sweden is a partnership of 13 European countries with the mission to design, construct and operate the world’s most powerful neutron source.  Working with us means being part of a challenging and exciting work environment, at a stunning, brand new workplace filled with innovative minds and brilliant people from across the globe.  About the position  We are now looking to appoint a summer worker for the Occup... Visa mer
The European Spallation Source (ESS) in Lund, Sweden is a partnership of 13 European countries with the mission to design, construct and operate the world’s most powerful neutron source. 

Working with us means being part of a challenging and exciting work environment, at a stunning, brand new workplace filled with innovative minds and brilliant people from across the globe. 

About the position 

We are now looking to appoint a summer worker for the Occupational Health, Safety and Environment (OHS&E) group in the Environment, Safety, Health & Security (ESH&S) division.  

The group is responsible for developing, supporting, monitoring and assuring the implementation of policies, rules, procedures, objectives, and best practices at all levels of the organisation in matters of OHS&E. 

As an OHS&E summer worker your main tasks will be to update ESS rules with the Swedish Work Environment Authority’s new regulatory structure and help mapping requirements, prepare material to develop an online ergonomic training, and update/develop the rules for non-flammable compressed gas handling and storage. 

About you 

A suitable background for this position would be:


• Education and/or work experience in Occupational Health and Safety.
• Knowledge of the Swedish Work Environment Authority regulations.
• Good written and oral communication skills in English.
• Knowledge of Swedish.
• Minimum age 18 years.

We believe that you enjoy communicating and collaborating with a variety of people in an international environment. You are good at taking initiative and not afraid to ask questions.

You are accustomed to using various, regular IT tools and programs, and find it easy to learn new systems. 

Duration and location 

This is a summer work position of 6 to 8 weeks. 

Planned start date is 16th June, 2025 or per agreement.

Your workplace is on-site at ESS in Lund, Sweden.  

How to apply 

Please provide your CV in English by clicking on “apply” and following the instructions. Please note that we only accept applications via the ESS website. The last day to apply is 19th May, 2025. 

Certain roles at ESS require health and safety and/or security checks, which may be carried out during the recruitment process.   

For further information regarding the position, please contact Recruiting Manager Helen Boyer at [email protected]   

For trade union information, please contact Unionen representative Mikael Johansson at [email protected] or SACO/Swedish Association of Graduate Engineers representative Marc Kickulies at [email protected]   

We look forward to receiving your application! Visa mindre

Senior Software Developer

The European Spallation Source is one of the largest science and technology infrastructure projects being built today. The project includes the most powerful linear proton accelerator ever built, a five-tonne, helium-cooled tungsten target wheel, 15 state-of-the-art neutron instruments, a suite of laboratories, and a super-computing data management and software development centre. In the context of its history and future as a scientific organisation, howev... Visa mer
The European Spallation Source is one of the largest science and technology infrastructure projects being built today. The project includes the most powerful linear proton accelerator ever built, a five-tonne, helium-cooled tungsten target wheel, 15 state-of-the-art neutron instruments, a suite of laboratories, and a super-computing data management and software development centre. In the context of its history and future as a scientific organisation, however, it is more than the sum of its parts. It is a brand-new Big Science organisation, and we are building it from the ground up.

Come and shape the future of science with us!


About the role

The Experiment Control and Data Collection group (ECDC) at ESS aims to produce the right tools for scientists to carry out cutting edge research, using all the capabilities of our next generation neutron facility. The group focuses on optimising user experience, building and supporting the software data acquisition chain, and assisting scientists with controls and data acquisition needs.  

We are now looking for a Senior Software Developer to design and implement advanced software solutions for experiment control and data acquisition workflows in a large-scale scientific environment. In this role, you will be an essential part of developing and maintaining scientific experiment control software such as NICOS and related user interfaces. You'll take part in verifying, validating, and testing software critical to experiment control, data acquisition, and processing. Your work will directly contribute to integrating scientific systems and refining experimental workflows, while optimising data streaming solutions. You’ll support commissioning activities and day-to-day user operations, ensuring control systems are reliable, efficient, and user-friendly. This includes performing essential maintenance and contributing to the automation for deployment, smart diagnostics, and fault recovery. 

Collaboration will be central to your role, as you’ll work closely with Instrument Scientists, the Integrated Control Systems division, the Data Management & Software Centre, Technology groups and in-kind partners to enhance functionality and performance. You'll also help manage contributions to open-source software, foster collaboration with other research facilities, and drive continuous improvement in system architecture, development practices, and operational automation. In addition, you will take ownership of selected software projects, providing technical leadership and light project management to coordinate tasks, align priorities, and ensure timely delivery to support the transition from commissioning to full operations. 

This is a permanent position with a six-month probationary period and is based at the ESS campus in Lund, Sweden. 

About you

This role demands someone with a strong academic background in physics or computer science. Therefore, an advanced degree (MSc or PhD) in Computer Science, Physics, Software Engineering, or a related field is mandatory for this role. We need someone with at least five years of experience at a similar large-scale user facility, and who can bring a software engineering mindset, excellent collaboration skills and a proven capacity to work effectively across multidisciplinary teams. 

To thrive in this role, you need to have demonstrable programming skills in Python working in Linux environments, familiarity with data acquisition systems, instrumentation, and hardware/software integration as well as significant prior experience with EPICS or other scientific control systems i.e TANGO, event-driven architectures, and data streaming technologies. Prior experience in distributed computing, parallel processing, or data handling is also required. 

Additional expertise in programming languages such as C++, Rust, or JavaScript would be advantageous, as would a sound understanding of Agile methodologies, CI/CD workflows, and DevOps practices. Experience contributing to open-source software development is also meritorious, as this reflects the collaborative, innovation-driven mindset we value in our team. Personality and attitude are key, as we value strong communication and a genuine drive to help the project reach its full potential. The working language of ESS is English - but the ability to communicate in Swedish is always a bonus.  

At ESS, we always look for proactive team players who thrive in building processes from scratch, and who are eager to collaborate across diverse backgrounds. If you are self-starting, hands-on problem-solver with a passion for contributing to the success of our groundbreaking ESS project, then we would love to hear from you. 

What we offer

A career at ESS gives you the opportunity to contribute to the future discoveries within neutron science at a stunning, brand-new workplace filled with innovative minds and brilliant people from across the globe. We offer market competitive, individualised compensation which is differentiated according to role, responsibilities, individual skills, abilities and achievements as well as monthly pension contributions on top of your salary. You can learn more about the exciting benefits of working at ESS on our careers page. 

To apply

If you see yourself in what we’re looking for, please provide your CV and motivation letter in English by clicking on “apply” and following the instructions. Please be aware that we can only accept direct applications made via the ESS website. Submit your application as soon as you can and quote the job reference number ESD-63091 in your application. The last day to apply is May 11, 2025.

Please be aware that we can only accept direct applications made via the ESS website.

This role requires additional background screening processes and health and safety checks, which will be performed during the recruitment process.

For more information regarding the ESS recruitment process in general, please follow this link: Careers | ESS


We look forward to receiving your application!



We have made our media choice regarding recruitments and kindly decline contact with media sellers. Visa mindre

Summer worker – Fault reporting and Tracking tools

The European Spallation Source (ESS) in Lund, Sweden is a partnership of 13 European countries with the mission to design, construct and operate the world’s most powerful neutron source.  Working with us means being part of a challenging and exciting work environment, at a stunning, brand new workplace filled with innovative minds and brilliant people from across the globe.  About the position  We are now looking to appoint a summer worker for Control R... Visa mer
The European Spallation Source (ESS) in Lund, Sweden is a partnership of 13 European countries with the mission to design, construct and operate the world’s most powerful neutron source. 

Working with us means being part of a challenging and exciting work environment, at a stunning, brand new workplace filled with innovative minds and brilliant people from across the globe. 

About the position 

We are now looking to appoint a summer worker for Control Room Operations in the Operation division. 

Operations group is responsible for running the neutron source (accelerator and target) along with the conventional facility systems. Moreover, our group is helping and supporting management and maintenance groups with information about availability and faults produced by the proton accelerator systems, target systems and the remaining auxiliary systems. 

As software developer summer worker, you will join the control room operations group to work on the Fault Tracking tools. Your main areas of work will be to explore options to automatize the process of fault tracking and the data analysis coming from the initial tests. The assignment will involve collaboration with other members of operations group, but also in the other divisions like software groups and various stakeholders that are part of the larger scope for Fault Tracking activities. 

About you 

A suitable background for this position would be:


• Enrolled at university, following a degree in one of following faculties: Physics, Computer Science, Engineering, or Electronics.
• Python and/or Java programming experience.
• Basic data analysis experience.
• Basic understating of particle accelerator design and supporting systems.
• Experience with editing content Sharepoint, Confluence, Wiki or similar software.
• Good written and oral communication skills in English.
• Minimum age 18 years.

We believe that you enjoy communicating and collaborating with a variety of people in an international environment. You are good at taking initiative and not afraid to ask questions. 

Duration and location

The position is a summer work position of 10 weeks, or as agreed.

Planned start date is 9 June, 2025 or per agreement.

Your workplace is on-site at ESS in Lund, Sweden.  

How to apply 

Please provide your CV in English by clicking on “apply” and following the instructions. Please note that we only accept applications via the ESS website. The last day to apply is 5 May, 2025. 

Certain roles at ESS require health and safety and/or security checks, which may be carried out during the recruitment process.  

For further information regarding the position, please contact the recruiting responsible, Arek Gorzawski, Control Room shift leader, at [email protected]

For trade union information, please contact Unionen representative Mikael Johansson at [email protected] or SACO/Swedish Association of Graduate Engineers representative Marc Kickulies at [email protected]   

We look forward to receiving your application! Visa mindre

Summer worker – Ray tracing simulations of neutron spectroscopy instruments

The European Spallation Source (ESS) in Lund, Sweden is a partnership of 13 European countries with the mission to design, construct and operate the world’s most powerful neutron source.  Working with us means being part of a challenging and exciting work environment, at a stunning, brand-new workplace filled with innovative minds and brilliant people from across the globe.  About the position  We are now looking to appoint a summer worker for the Spect... Visa mer
The European Spallation Source (ESS) in Lund, Sweden is a partnership of 13 European countries with the mission to design, construct and operate the world’s most powerful neutron source. 

Working with us means being part of a challenging and exciting work environment, at a stunning, brand-new workplace filled with innovative minds and brilliant people from across the globe. 

About the position 

We are now looking to appoint a summer worker for the Spectroscopy Instrument Division. 

The Spectroscopy Instrument Division is responsible for the delivery of the spectroscopy instruments – both those that are currently under construction; MIRACLES, CSPEC, BIFROST, T-REX and VESPA, and those we will build in the future, yet to be determined. 

As a summer worker your main tasks will be to work with neutron scattering scientists to simulate novel instrument concepts using Ray Tracing Methods. 

About you 

A suitable background for this position would be:


• Pursuing an undergraduate degree in Physics or Chemistry.
• Preliminary knowledge of neutron scattering techniques.
• Preliminary knowledge of neutron ray tracing software.
• Good written and oral communication skills in English.
• Minimum age 18 years.

We believe that you enjoy communicating and collaborating with a variety of people in an international environment. You are good at taking initiative and not afraid to ask questions. 

Duration and location 

This is a summer work position of 3-4 months, as agreed.

Planned start date is May/June, 2025 or per agreement.

Your workplace is on-site at ESS in Lund, Sweden.  

How to apply 

Please provide your CV in English by clicking on “apply” and following the instructions. Please note that we only accept applications via the ESS website. The last day to apply is 28 April, 2025. 

Certain roles at ESS require health and safety and/or security checks, which may be carried out during the recruitment process.   

For further information regarding the position, please contact Recruiting Manager Pascale Deen at [email protected]   

For trade union information, please contact Unionen representative Mikael Johansson at [email protected] or SACO/Swedish Association of Graduate Engineers representative Marc Kickulies at [email protected]   

We look forward to receiving your application! Visa mindre

Summer worker – Python Programmer

The European Spallation Source (ESS) in Lund, Sweden is a partnership of 13 European countries with the mission to design, construct and operate the world’s most powerful neutron source.  Working with us means being part of a challenging and exciting work environment, at a stunning, brand new workplace filled with innovative minds and brilliant people from across the globe.  About the position  We are now looking to appoint a summer worker for the Detec... Visa mer
The European Spallation Source (ESS) in Lund, Sweden is a partnership of 13 European countries with the mission to design, construct and operate the world’s most powerful neutron source. 

Working with us means being part of a challenging and exciting work environment, at a stunning, brand new workplace filled with innovative minds and brilliant people from across the globe. 

About the position 

We are now looking to appoint a summer worker for the Detector Group in the Neutron Scattering Systems (NSS) Division.  

The Detector Group is responsible for the design and manufacturing of many of the Neutron detectors used at ESS. 

As Python Programmer summer worker your main tasks will be to help complete the scripts and code used for testing many of the Neutron detectors, from beautifying the code to generation of a graphical interface to speed up the launching and configuration. 

About you 

A suitable background for this position would be:


• Student of Computer Science.
• Knowledge of Python or be willing to learn it.
• Good written and oral communication skills in English.
• Minimum age 18 years.

We believe that you enjoy communicating and collaborating with a variety of people in an international environment. You are good at taking initiative and not afraid to ask questions. 

Duration and location 

This is a summer work position of 2-3 months, as agreed.

Planned start date is week 20 (in May), 2025 or per agreement.

Your workplace will be on-site in Lund, Sweden; 50% at ESS, Partikelgatan, and 50% at ESS Utgard, Scheelevägen. 

How to apply 

Please provide your CV in English by clicking on “apply” and following the instructions. Please note that we only accept applications via the ESS website. The last day to apply is 14 April, 2025. 

Certain roles at ESS require health and safety and/or security checks, which may be carried out during the recruitment process.   

For further information regarding the position, please contact Detector Electronics Engineer Angel Monera Martinez at [email protected]

For trade union information, please contact Unionen representative Mikael Johansson at [email protected] or SACO/Swedish Association of Graduate Engineers representative Marc Kickulies at [email protected]   

We look forward to receiving your application! Visa mindre

Summer worker – Communications

The European Spallation Source ERIC (ESS) in Lund, Sweden is a partnership of 13 European countries with the mission to design, construct and operate the world’s most powerful neutron source.  Working with us means being part of a challenging and exciting work environment, at an international workplace filled with innovative minds and brilliant people from across the globe.  About the position  We are now looking to appoint a summer worker for the Commu... Visa mer
The European Spallation Source ERIC (ESS) in Lund, Sweden is a partnership of 13 European countries with the mission to design, construct and operate the world’s most powerful neutron source. 

Working with us means being part of a challenging and exciting work environment, at an international workplace filled with innovative minds and brilliant people from across the globe. 

About the position 

We are now looking to appoint a summer worker for the Communications group in the Administration Directorate.  

The Communications Group is responsible for managing all of ESS’ external and internal communications and engagement activities, supporting the organisation in its mission to complete the construction of the facility and secure readiness for operations as a leading Neutron Science facility. The responsibilities span across the full strategic and operational scope, meaning that it is the Communications Group who develops, distributes, and follows up communications in all channels.

As a summer worker for the Communications Group, your main area of work will be to support internal and external communications tasks related to a major international Science conference (ICNS 2025) in July, partially hosted by ESS, in Copenhagen and Lund. You will also support with developing and publishing content for various projects in internal and external digital channels (social media, Webpage, Intranet etc.) An internal project identifying and reviewing outdated intranet content will also fall under your responsibilities.

About you 

A suitable background for this position would be:


• You are studying communications.
• Ideally, you have first-hand experience with internal and external communications already.
• You have good written and oral communication skills in English.
• Minimum age 18 years.

You should also enjoy communicating and collaborating with a variety of people in an international environment. You need to be good at taking initiative and are not afraid to ask questions. We attach great importance to personality and attitude, so we're looking for a real team player: someone who is sociable, has excellent communication skills and who likes to collaborate with different people from a variety of backgrounds. 

Duration and location 

This is a summer work position of maximum 12 weeks. The exact length will be determined by agreement. 

The planned start date is 9 June 2025, or by agreement.

Your workplace is on-site at ESS, Partikelgatan 2, Lund, Sweden.  


How to apply 

Please provide your CV in English by clicking on “apply” and following the instructions. Please note that we only accept applications via the ESS website. The last day to apply is 15 April 2025. 

For further information regarding the position, please contact interim Communications Group Leader Lina Andersson at [email protected]

For trade union information, please contact Unionen representative Mikael Johansson at [email protected] or SACO/Swedish Association of Graduate Engineers representative Marc Kickulies at [email protected]    

We look forward to receiving your application! Visa mindre

Summer worker – Human Resources

The European Spallation Source (ESS) in Lund, Sweden is a partnership of 13 European countries with the mission to design, construct and operate the world’s most powerful neutron source.  Working with us means being part of a challenging and exciting work environment, at a stunning, brand new workplace filled with innovative minds and brilliant people from across the globe.  About the position  We are now looking to appoint a summer worker for the Human... Visa mer
The European Spallation Source (ESS) in Lund, Sweden is a partnership of 13 European countries with the mission to design, construct and operate the world’s most powerful neutron source. 

Working with us means being part of a challenging and exciting work environment, at a stunning, brand new workplace filled with innovative minds and brilliant people from across the globe. 

About the position 

We are now looking to appoint a summer worker for the Human Resources Division. The HR team leads the work to define, find, attract, recruit, relocate, develop and retain employees, and also contribute to making ESS an attractive and inspiring workplace. HR supports and coaches the management, line managers and employees in the work to reach ESS strategies and goals. 

As a Human Resources summer worker your main tasks will be to carry out HR related tasks such as general HR admin, archiving, digital clean-up among folders, documents etc., answering queries from the organisation, e.g. verbally, in writing, and via our ticket system, joining meetings, taking and distributing minutes, preparing presentations in PowerPoint, updating our intranet from an HR perspective, proofreading and feedbacking on documents, review HR pages on our external website etc. 

About you 

A suitable background for this position would be:


• Ongoing HR education at university, or similar.
• Some administrative experience.
• Some customer service experience.
• Good written and oral communication skills in English.
• Minimum age 18 years.

We believe that you enjoy communicating and collaborating with a variety of people in an international environment, and helping them out when needed. You are good at taking initiative and not afraid to ask questions in order to move forward with your work. You are also thorough and have an organisational ability. 

Duration and location 

This is a summer work position of 1-2 months, as agreed. 

Planned start date is in June, 2025 or per agreement.

Your workplace is on-site at ESS in Lund, Sweden.  

How to apply 

Please provide your CV in English by clicking on “apply” and following the instructions. Please note that we only accept applications via the ESS website. The last day to apply is 23 April, 2025. 

Certain roles at ESS require health and safety and/or security checks, which may be carried out during the recruitment process.   

For further information regarding the position, please contact Recruiter Åsa Ander at [email protected] 

For trade union information, please contact Unionen representative Mikael Johansson at [email protected] or SACO/Swedish Association of Graduate Engineers representative Marc Kickulies at [email protected]   

We look forward to receiving your application! Visa mindre

Summer worker – Electronics Engineer

The European Spallation Source (ESS) in Lund, Sweden is a partnership of 13 European countries with the mission to design, construct and operate the world’s most powerful neutron source.  Working with us means being part of a challenging and exciting work environment, at a stunning, brand new workplace filled with innovative minds and brilliant people from across the globe.  About the position  We are now looking to appoint a summer worker for the Detec... Visa mer
The European Spallation Source (ESS) in Lund, Sweden is a partnership of 13 European countries with the mission to design, construct and operate the world’s most powerful neutron source. 

Working with us means being part of a challenging and exciting work environment, at a stunning, brand new workplace filled with innovative minds and brilliant people from across the globe. 

About the position 

We are now looking to appoint a summer worker for the Detector Group in the Neutron Scattering Systems (NSS) Division.  

The Detector Group is responsible for the design and manufacturing of many of the Neutron detectors used at ESS. 

As Electronics Engineer summer worker, you will be supporting the design, assembly and testing of electronic equipment in the Detector group. In addition, you will support the scientist of the group in their rack population and cabling. 

About you 

A suitable background for this position would be:


• Student of Electronics Engineering.
• Knowledge of Electronics.
• Good written and oral communication skills in English.
• Minimum age 18 years.

As a person, you prefer a hands-on approach. We believe that you enjoy communicating and collaborating with a variety of people in an international environment. You are good at taking initiative and not afraid to ask questions. 

Duration and location 

This is a summer work position of 2-3 months, as agreed.

Planned start date is week 24 (in June), 2025 or per agreement.

Your workplace will be on-site at ESS Utgard, Scheelevägen, Lund, Sweden. 

How to apply 

Please provide your CV in English by clicking on “apply” and following the instructions. Please note that we only accept applications via the ESS website. The last day to apply is 14 April, 2025. 

Certain roles at ESS require health and safety and/or security checks, which may be carried out during the recruitment process.   

For further information regarding the position, please contact Detector Electronics Engineer Angel Monera Martinez at [email protected] 

For trade union information, please contact Unionen representative Mikael Johansson at [email protected] or SACO/Swedish Association of Graduate Engineers representative Marc Kickulies at [email protected]   

We look forward to receiving your application! Visa mindre

Detector scientist - Helium-3 detectors and systems integration

The European Spallation Source is one of the largest science and technology infrastructure projects being built today. The project includes the most powerful linear proton accelerator ever built, a five-tonne, helium-cooled tungsten target wheel, 15 state-of-the-art neutron instruments, a suite of laboratories, and a supercomputing data management and software development centre. In the context of its history and future as a scientific organisation, howeve... Visa mer
The European Spallation Source is one of the largest science and technology infrastructure projects being built today. The project includes the most powerful linear proton accelerator ever built, a five-tonne, helium-cooled tungsten target wheel, 15 state-of-the-art neutron instruments, a suite of laboratories, and a supercomputing data management and software development centre. In the context of its history and future as a scientific organisation, however, it is more than the sum of its parts. It is a brand-new Big Science organisation and we are building it from the ground up.

Come and build the future of Science with us!

About the role:

ESS is at an exciting turning point. It is in transition from being a construction site, to being an operating facility. To help us realise our goal of being the most powerful neutron source in the world, we are now looking to add a Detector Scientist for Helium-3 detectors and detector system integration to our Detector Group. The Detector Group at ESS has the responsibility for designing, building, testing, commissioning and installing all of the neutron detectors which allow our researchers to "see" their experiments using our neutrons.

As our next Detector Scientist, you’ll be part of ESS's largest and most critical projects where you'll play a pivotal role in testing, installing, and commissioning He-3 detectors and integrating detector systems across the ESS beamlines. Through your daily work tasks, you will have the opportunity to participate in experimental campaigns to evaluate the performance of He-3 detectors, perform data processing and analysis, as well as support the integration, commissioning and operational readiness of detector systems - working closely with engineers and technicians. Adhering to best practices, safety directives, and professional conduct standards, you'll also meticulously document all efforts while nurturing networks of suppliers, collaborators, and partners.

The position is for a 3-year fixed-term agreement based at the ESS Campus in Lund, Sweden with frequent travels at other collaborating partners and neutron science centers.

About you:

Our ideal candidate for this role will hold a PhD in physics or engineering and can demonstrate a strong background in detector instrumentation. While not required, experience in gaseous detector technologies and data acquisition systems is advantageous. However, you should possess the hands-on practical skills necessary to prepare experimental setups for detector performance evaluation. Proficiency in data analysis and programming is essential, with a preference for experience in Python and/or C/C++.

We are building ESS from the ground up, so we need someone who is comfortable not only following procedures, but also creating them. You should thrive in a dynamic environment where your responsibilities span multiple projects. We attach great importance to personality and attitude, so we're looking for a real team player. Excellent communication and interpersonal skills are vital for effective collaboration with a diverse group of scientists, engineers, and technical staff within a multidisciplinary team where everyone is committed to helping this amazing project to realise its full potential. We need a hands-on self-starter who is able to work in a structured, orderly, responsible and – most importantly – safe way.

The working language of ESS is English and we need someone who can start as soon as possible. Knowledge of other European languages would be beneficial.

To apply:

A career at ESS gives you the opportunity to contribute to the future discoveries within neutron science at a stunning, brand-new workplace filled with innovative minds and brilliant people from across the globe. We offer market competitive, individualised compensation which is differentiated according to role, responsibilities, individual skills, abilities and achievements as well as monthly pension contributions on top of your salary.

If you see yourself in what we’re looking for, please provide your CV and motivation letter in English by clicking on “apply” and following the instructions. Please be aware that we can only accept direct applications made via the ESS website. Submit your application as soon as you can and quote the job reference number ESD-56063 in your application.

This role requires additional background screening processes and health and safety checks, which will be performed during the recruitment process.

For further information regarding the position, please contact Talent Acquisition Specialist Daniel Nordin Baker on [email protected]

For trade union information, please contact Unionen representative Mikael Johansson on [email protected] or SACO/Swedish Association of Graduate Engineers representative Marc Kickulies at [email protected]

We look forward to receiving your application! Visa mindre

5-axis CNC Operator

Imagine what we could learn if we could build a machine so powerful that it could look deep inside the very materials that the universe is made from. A device that could actually let us see the atoms and molecules that make up the structure of substances. Imagine the new discoveries we could make, the new materials we could develop and how much we could learn about ourselves and our universe. The European Spallation Source is one of the largest science an... Visa mer
Imagine what we could learn if we could build a machine so powerful that it could look deep inside the very materials that the universe is made from. A device that could actually let us see the atoms and molecules that make up the structure of substances. Imagine the new discoveries we could make, the new materials we could develop and how much we could learn about ourselves and our universe.

The European Spallation Source is one of the largest science and technology infrastructure projects being built today. The project includes the most powerful linear proton accelerator ever built, a five-tonne, helium-cooled tungsten target wheel, 15 state-of-the-art neutron instruments, a suite of laboratories, and a supercomputing data management and software development centre. In the context of its history and future as a scientific organisation, however, it is more than the sum of its parts. It is a brand-new Big Science organisation and we are building it from the ground up.

Come and build the future of Science with us!

About the role:

We are currently seeking a skilled 5-Axis CNC Operator to join our Manufacturing Team. The manufacturing team provides essential services across the entire facility, involving component machining, technical support, and coordination for parts not suitable for in-house production. As we expand our team from five to six members, we are eager to find our new colleague who can contribute to our organization’s success.

In our dynamic work environment, adaptability and motivation are key. The work is short series production runs (often only one to five details of each part) in a wide variety of materials. Our team operates with state-of-the-art machines and tools to ensure high-quality finished products are delivered to every area of the ESS organization.

Key responsibilities


• Programming a 3 or 5 axis milling machine, or turn & mill machine using our Gibbs Cam solution.
• Rigging and setup of a wide variety of jobs on the machine. From small to semi-large.
• Work on conventional machines such as milling machines, lathes and other normally occurring machines in a mechanical workshop.
• Participation in assembly work relating to manufactured parts.
• Performing conventional metrology and quality control relating to manufactured parts.
• Reading and understanding technical drawings (both part drawings as well as large assembly drawings).

About you:

To thrive in this role, we expect you to have at least five years of experience programming and operating 5-axis milling or mill-turn machines, along with familiarity in conventional mechanical workshop machinery, such as manual milling machines, lathes and drilling machines. Proficiency in using a CAM system and experience with practical hands-on work with conventional machine shop tools are essential.

As a member of our close-knit Manufacturing Team, you will collaborate closely with colleagues to achieve shared goals. Success in this role requires a results-oriented, service-minded attitude with a commitment to delivering high-quality work on time. You should also possess an eagerness to learn and share knowledge, embracing new ideas and technologies in the manufacturing sector. Flexibility to adapt quickly to changing priorities and urgent tasks is critical, along with a detail-oriented mindset prioritizing safety for yourself, your coworkers and the machines in mind.

The following skills and certificates would be considered an advantage:


• Forklift driving certificate
• Overhead crane lifting certificate
• Driving license (Car)
• Understanding of Swedish language both written and spoken

This is a permanent position with a six-month probationary period. The position is based in Lund, Sweden.

What can we offer?

Aside from the chance to work at truly unique big science project, you can also expect:


• An opportunity to contribute to the future discoveries within neutron science.
• A stunning, brand new workplace filled with innovative minds and brilliant people from across the globe.
• A challenging, innovative and stimulating work environment.
• Market competitive compensation that is individual and differentiated according to role, responsibilities, individual skills, abilities and achievements.
• 25 days of annual leave, as well as more than 10 days of public holiday and company days off or days with limited working hours.
• Monthly pension contributions on top of your salary.
• Flexible working arrangements and a real work-life balance.

If you see yourself in what we’re looking for, please provide your CV and motivation letter in English by clicking on “apply” and following the instructions. Please be aware that we can only accept direct applications made via the ESS website.

Certain roles at ESS require health and safety checks and/or security clearance procedures, which will be performed as part of the recruitment process.

We review applications continuously, so don’t miss out! Submit your application as soon as you can and quote the job reference number ESD-63706 in your application. 

For more information regarding the ESS recruitment process, please contact Sara Tenggren – HR Generalist – at [email protected]. For further information regarding the position, please contact Fabien Rey – Head of Field Engineering and Site Support Division/ESS Site Manager – via [email protected]

For trade union information, please contact Unionen representative Mikael Johansson on [email protected] or SACO/Swedish Association of Graduate Engineers representative Marc Kickulies at [email protected] 

We look forward to receiving your application soon! Visa mindre

Piping Engineer, with Aveva Admin skills

The European Spallation Source ERIC (ESS) is one of the largest technology infrastructure projects being built today, and aims to be the most powerful neutron source in the world when it is fully operational in 2028. It will enable scientists to study the structure and behavior of matter at the atomic level, opening new possibilities for research and innovation in material science.   About the role  We are now seeking to appoint a Piping Engineer with Av... Visa mer
The European Spallation Source ERIC (ESS) is one of the largest technology infrastructure projects being built today, and aims to be the most powerful neutron source in the world when it is fully operational in 2028. It will enable scientists to study the structure and behavior of matter at the atomic level, opening new possibilities for research and innovation in material science.  

About the role 

We are now seeking to appoint a Piping Engineer with Aveva Admin skills for the Plant & Process Engineering Function, which is part of the Design & Engineering Division. The team is responsible for the specification and design of process systems, such as cooling systems, associated piping systems and mechanical support systems. Configuration and support of the Aveva tool suite, and engineering reviews and support, are also part of the tasks of the group. 

This dual-role opportunity is perfect for professionals eager to apply their industry experience to a project of historic importance.

The main areas of responsibilities associated to the Aveva platform are: 


• Configuring and setting up the Aveva E3D environment including:

• Project templates
• User roles
• Permissions
• Project-specific settings
• Catalogues & specifications for piping, electrical and Aveva supports
• Diagram symbols and templates

• Customizing and configuring the Aveva E3D software to meet the specific needs and requirements of the organization, including customizing user interfaces, workflows, and reports.
• Providing support to engineering teams by assisting with project setup, data management, and troubleshooting issues related to the Aveva E3D software.
• Providing technical support and troubleshooting assistance to users encountering issues with the Aveva E3D software, diagnosing problems and implementing solutions.
• Providing ESS standards and best practices within piping design and Aveva tool. Developing training materials and documentation to onboard new users and train existing users on the use of the Aveva software.
• Identifying the need for additional support provided by Aveva and plan and follow-up deliveries.

The main areas of responsibilities associated to piping design and engineering are: 


• Performing pre-studies, conceptual, system design and detailed design of piping systems and associated mechanical support systems.
• Preparing specifications and documentation for procurement, fabrication and installation of systems and components.
• Supporting in the manufacturing process, installation, testing and commissioning of equipment and systems.

This is a permanent, on-site position in Lund, Sweden, and we need someone who can start as soon as practically possible. 

About you 

To thrive in this role, we believe that you have a relevant engineering degree, or education and experience that we deem relevant for the role, such as experience from industrial plants or equivalent. You have approximately five years’ working experience or more, from the tasks mentioned above, and your knowledge on components, dimensioning, standards and directives, as well as the installation process, is good. 

Proficiency in the Aveva tool suite is a requirement. It is also beneficial if you have worked professionally as an Aveva Administrator before, but we would be willing to train a candidate who fulfils other requirements. Furthermore, proficiency in written and spoken English is a requirement. 

We believe that you enjoy communicating and collaborating with a large number of primarily internal stakeholders. You are comfortable with being the Aveva Admin go-to person in the organisation, and feel confident in preparing and conducting staff trainings, in a pedagogical and patient manner. 

Ideally, you are a self-motivated problem-solver, striving to ensure smooth and efficient ways of working for the organisation. Being structured and taking responsibility while adhering to instructions and procedures comes naturally to you. 

What can we offer? 

Aside from the chance to work at a truly unique Big Science project, you can also expect:  


• A stunning, brand new workplace filled with innovative minds and brilliant people.
• A challenging and stimulating work environment.
• 30 days of annual leave, as well as more than 10 days of public holiday and company days off or days with limited working hours.
• Monthly pension contributions on top of your salary.
• Focus on work-life balance.
• Preventative healthcare benefit.
• Where applicable, relocation support and allowances may also be available.

Interested? We sure hope so.  

If you see yourself in what we’re looking for, please provide your CV and motivation letter in English by clicking on “apply” and following the instructions. Please be aware that we can only accept direct applications made via the ESS website. We will review applications and also interview continuously, so please apply as soon as you can, or by 3 May, 2025 at the latest. 

Certain roles at ESS require health and safety and/or security checks, which may be carried out during the recruitment process.  

For more information regarding the ESS recruitment process, please see https://europeanspallationsource.se/careers or contact Recruitment Officer Åsa Ander at [email protected]  

For further information regarding the position, please contact Mats Pålsson at [email protected]  

For trade union information, please contact Unionen representative Mikael Johansson at [email protected] or SACO/Swedish Association of Graduate Engineers representative Marc Kickulies at [email protected]

We look forward to receiving your application! Visa mindre

Summer worker – Finance

The European Spallation Source (ESS) in Lund, Sweden is a partnership of 13 European countries with the mission to design, construct and operate the world’s most powerful neutron source.  Working with us means being part of a challenging and exciting work environment, at a stunning, brand new workplace filled with innovative minds and brilliant people from across the globe.  About the position  We are now looking to appoint a summer worker for the Finan... Visa mer
The European Spallation Source (ESS) in Lund, Sweden is a partnership of 13 European countries with the mission to design, construct and operate the world’s most powerful neutron source. 

Working with us means being part of a challenging and exciting work environment, at a stunning, brand new workplace filled with innovative minds and brilliant people from across the globe. 

About the position 

We are now looking to appoint a summer worker for the Finance group in the Finance & Business Control (F&BC;) division. 

The Finance & Business Control Division maintains and supports ESS’s fiscal responsibilities through accounting, controlling, and financial compliance. We provide financial oversight and business controlling services to ESS. We cover accounting, VAT, reimbursements, Member contributions, financing, cash flow, financial reporting, analyses, monitoring, business planning, and large insurances.

As summer worker for accounts payable your main area of work will be to support the Finance Group with the processing of invoices. This includes taking care of mail from our suppliers, registration of invoices, following up on statements and payments to make sure invoices are paid in time. In addition, you will work on consolidating databases.

About you 

A suitable background for this position would be:


• You are studying accounting, business, or economics.
• Ideally, you have first experience with accounts payable already.
• Good written and oral communication skills in English.
• Minimum age 18 years.

We believe that you enjoy communicating and collaborating with a variety of people in an international environment. You are good at taking initiative and not afraid to ask questions. We attach great importance to personality and attitude, so we're looking for a real team player: Someone who is sociable, has excellent communication skills and who likes to collaborate with different people from different backgrounds. 

Duration and location 

This is a summer work position of eight weeks. 

Planned start date is 9th of June, 2025 or per agreement.

It would be great if you could join for a few days of training in late May.

Your workplace is on-site at ESS in Lund, Sweden.  

How to apply 

Please provide your CV in English by clicking on “apply” and following the instructions. Please note that we only accept applications via the ESS website. The last day to apply is 30th of April, 2025. 

Certain roles at ESS require health and safety and/or security checks, which may be carried out during the recruitment process.   

For further information regarding the position, please contact Recruiting Manager Maja Jensen at [email protected]   

For trade union information, please contact Unionen representative Mikael Johansson at [email protected] or SACO/Swedish Association of Graduate Engineers representative Marc Kickulies at [email protected]   

We look forward to receiving your application! Visa mindre

Accelerator Engineer/Scientist for the normal conducting linac

The European Spallation Source is one of the largest science and technology infrastructure projects being built today. The project includes the most powerful linear proton accelerator ever built, a five-tonne, helium-cooled tungsten target wheel, 15 state-of-the-art neutron instruments, a suite of laboratories, and a super-computing data management and software development centre. In the context of its history and future as a scientific organisation, howev... Visa mer
The European Spallation Source is one of the largest science and technology infrastructure projects being built today. The project includes the most powerful linear proton accelerator ever built, a five-tonne, helium-cooled tungsten target wheel, 15 state-of-the-art neutron instruments, a suite of laboratories, and a super-computing data management and software development centre. In the context of its history and future as a scientific organisation, however, it is more than the sum of its parts. It is a brand-new Big Science organisation, and we are building it from the ground up.

About the role:

ESS is at an exciting turning point. It is in transition from being a construction site, to being an operating facility. To support the operation, maintenance and development of the ESS linear accelerator, we are now looking for a scientist or engineer with expertise of normal conducting cavities to join our linac group.

In this role, you will be working within a team of world-class technicians and engineers. The ESS linac accelerating elements include an RFQ, 3 buncher cavities, a 5-segment drift-tube linac, 26 double spoke cavities and up to 120 elliptical cavities of two different families (medium beta and high beta). All of the normal conducting front-end, the spokes and 56 elliptical cavities are already installed for the staged commissioning of the facility at 2 MW power. Commissioning with low power beam is under way, and operation with full beam power is planned to start in 2026 – when the protons can be sent to the spallation target.

Our goal is to have a highly skilled, cross-functional team with a deep understanding of the entire linac. However, in this role, your focus will be primarily on our normal conducting linac elements; which includes the RFQ, the buncher cavities, and the drift tube linac. Within this context, you will:


• Support the ongoing commissioning of normal conducting cavities to ensure reliable performance as ESS transitions to full operation.
• Develop and implement maintenance procedures, diagnostics, and troubleshooting strategies to maximise operational uptime.
• Evaluate NCL cavity performance data to diagnose issues and produce technical reports to guide future improvements.
• Drive improvements to enhance performance, reliability, and efficiency – including work on RF tuning and cooling systems.
• Work closely with other teams within the Accelerator and Operations groups – as well as with in-kind partners – to integrate system upgrades and ensure compliance with engineering and safety standards.

Part of the scope of this role includes driving improvements to our ion source test stand which are needed to upgrade it from its current status as a standalone ion source to a more integrated backup front end for the linac.

Safety comes before everything else at ESS, so you will also work to ensure that all activities comply with ESS safety standards as well as international best practices.

This is a full-time, permanent position based at the ESS Campus in Lund, Sweden.

About you:

First and foremost, we are seeking a dedicated engineer with a passion for high-performance linear accelerator systems. A degree (MSc or PhD) in engineering, physics, or a closely related field, as well as experience of working with particle accelerators is mandatory to be considered for this role.

You should have a deep understanding of normal conducting cavities, radiofrequency (RF) systems, and vacuum technology, as well as significant hands-on experience with cavity conditioning, tuning, and beam commissioning. Familiarity with cryogenics, electromagnetics, and thermal management would be beneficial, as would prior experience of using software tools for RF modelling, simulation, and data analysis (e.g., COMSOL, MATLAB or Python).

To thrive at ESS, you need excellent communication and interpersonal skills – as these are vital for effective collaboration with a diverse group of scientists, engineers, and technical staff within a multicultural, multidisciplinary team. We are looking for someone who can balance an ability to work effectively in a high-pressure, time-sensitive environment where quick decision-making and troubleshooting are critical with the structured, analytical mindset required for focusing on identifying issues and implementing sustainable solutions. As a natural problem solver, you love to generate creative, inventive ideas and explore new perspectives.

If you’re a flexible, focused, team-player with a hands-on, practical approach to engineering challenges with a focus on safety and operational excellence then we hope that you’ll consider this role with us.

To apply:

If you see yourself in what we’re looking for, please provide your CV and motivation letter in English by clicking on “apply” and following the instructions. Please be aware that we can only accept direct applications made via the ESS website. Submit your application as soon as you can and quote the job reference number ESD-64222 in your application.

This role requires additional background screening processes and health and safety checks, which will be performed during the recruitment process.

For further information regarding the position, please contact Talent Acquisition Specialist Daniel Nordin Baker on [email protected]

For trade union information, please contact Unionen representative Mikael Johansson on [email protected] or SACO/Swedish Association of Graduate Engineers representative Marc Kickulies at [email protected]

We look forward to receiving your application! Visa mindre

Main Control Room Operator

The European Spallation Source is one of the largest science and technology infrastructure projects being built today. The project includes the most powerful linear proton accelerator ever built, a five-tonne, helium-cooled tungsten target wheel, 15 state-of-the-art neutron instruments, a suite of laboratories, and a super-computing data management and software development centre. In the context of its history and future as a scientific organisation, howev... Visa mer
The European Spallation Source is one of the largest science and technology infrastructure projects being built today. The project includes the most powerful linear proton accelerator ever built, a five-tonne, helium-cooled tungsten target wheel, 15 state-of-the-art neutron instruments, a suite of laboratories, and a super-computing data management and software development centre. In the context of its history and future as a scientific organisation, however, it is more than the sum of its parts. It is a brand-new Big Science organisation, and we are building it from the ground up.

Come and be the future of Science with us!

About the role:

ESS is at an exciting turning point. It is in transition from being a construction site, to becoming an operating facility. To help us realise our goal of being the most powerful neutron source in the world, we are looking to recruit more operators for our Main Control Room. The Operations Group is responsible for ensuring a well-organised and safe operation of the ESS neutron source by controlling and monitoring the facility - including the accelerator and target - as well as necessary support systems and infrastructure.

This is a truly interesting and diverse role where you’ll be an integral part of the team operating what will become the world’s most powerful accelerator driven neutron source. In terms of your day-to-day work, you will be part of a skilled, diverse and enthusiastic team of shift workers on a 24/7 shift rotation. Together, the team monitors the complex systems required to generate the neutron beam safely, ensures that the logbook for the shift is updated properly, performs accelerator tunnel search procedures as required, manages the keys to the personnel safety systems, works with technical systems groups and contributes to the development of the operational instructions, procedures and training. Over time you will develop a deep knowledge and understanding of all aspects of the facility operation and technical systems.

Analysing complex numerical data, verbal data and all other sources of information is a key part of this role, so you must be comfortable with breaking information into component parts, patterns and relationships, probing for further information or greater understanding of a problem and then making rational judgements from the available information and analysis. You can also get involved with other technical and non-technical projects as necessary, and you will act as a point of contact for questions concerning safety (radiological and conventional) when on shift.

ESS is a user facility where scientists and engineers will come from all corners of the world to perform their studies, 24 hours a day, 7 days a week, and with a goal of 95% reliability. Therefore, working outside normal working hours is to be expected for this role.

About you:

This role demands a highly skilled, mentally resilient, and process-driven individual who can operate under pressure in a 24/7 control room environment. Therefore, we are looking for calm, detail-oriented professionals who excel in high-stakes, fast-paced environments and who can think critically under pressure.

Preferably, you have a degree in Physics, Engineering, Computer Science, or a related technical field. However, we will also accept equivalent, relevant work experience. Along with this, we need someone with a strong foundation in real-time monitoring and control systems. Ideally, you have experience working in particle accelerator infrastructure, nuclear operations, or industrial automation, and are comfortable troubleshooting complex technical setups. Your ability to diagnose faults and resolve technical issues quickly is essential for ensuring operational continuity. Prior experience of coding in Python, C/C++, or Java would be a bonus, as would familiarity with control system software such as EPICS. However, EPICS is not a requirement as training is available.

Working in a 24/7 control room environment requires mental endurance, as you will be expected to maintain accuracy and situational awareness during 8-hour long shifts – including on nights and weekends. Given the nature of this role, you should be confident at making clear, high-stakes decisions – both during normal operation and when responding to emergency situations. Following procedures in the control room is essential, but we also want someone with a proactive attitude who can look for ways to improve efficiency and enhance operational best practices. As part of a world-class research facility, you must be eager to collaborate with engineers, scientists, and technicians to contribute to the continuous development of procedures, training, and safety culture.

To apply:

A career at ESS gives you the opportunity to contribute to the future discoveries within neutron science at a stunning, brand-new workplace filled with innovative minds and brilliant people from across the globe. We offer market competitive, individualised compensation which is differentiated according to role, responsibilities, individual skills, abilities and achievements as well as monthly pension contributions on top of your salary.

If you see yourself in what we’re looking for, please provide your CV and motivation letter in English by clicking on “apply” and following the instructions. Please be aware that we can only accept direct applications made via the ESS website. Submit your application as soon as you can and quote the job reference number ESD-51375 in your application.

This role requires additional background screening processes and health and safety checks, which will be performed during the recruitment process.

For further information regarding the position, please contact Talent Acquisition Specialist Daniel Nordin Baker on [email protected] or Control Room Operations Group Leader Yngve Levinsen on [email protected]  

For trade union information, please contact Unionen representative Mikael Johansson on [email protected] or SACO/Swedish Association of Graduate Engineers representative Marc Kickulies at [email protected]

We look forward to receiving your application! Visa mindre

Instrument Scientist for CSPEC

The European Spallation Source (ESS) is a partnership organization of 13 European member countries located in the city of Lund, Sweden. The ESS is hiring motivated and inspiring people from across the globe to design, construct and operate the world’s most powerful neutron source. We seek collaborative, talented people in a range of fields who are excited about playing a part in the future of science in Europe. CSPEC is a cold neutron direct geometry time... Visa mer
The European Spallation Source (ESS) is a partnership organization of 13 European member countries located in the city of Lund, Sweden. The ESS is hiring motivated and inspiring people from across the globe to design, construct and operate the world’s most powerful neutron source. We seek collaborative, talented people in a range of fields who are excited about playing a part in the future of science in Europe.

CSPEC is a cold neutron direct geometry time of flight spectrometer developed as a German and French collaboration between the research neutron sources (FRM-II) and Laboratoire Léon Brillouin (LLB). CSPEC is a workhorse instrument to study (1) low lying excitations in the ever complex low-energy dynamics of energy materials and emergent magnetic behaviour of quantum materials, and (2) the dynamics of hierarchical systems that includes liquids, colloids, polymers, foams, gels, granular and biological materials.

We are currently recruiting for the position of Instrument Scientist for CSPEC. This is a critical role that exists within the Spectroscopy Division in the Science Directorate of the ESS. Supported by our in-kind partners, FRM-II and LLB, and our in-house scientific and technical staff you will be tasked to deliver the CSPEC instrument to hot commissioning and prepare the instrument for user operations. We are seeking a scientist in the field of neutron spectroscopy with an interest in collective and quasiparticle excitations in hard condensed matter as studied by inelastic neutron scattering.

Your responsibilities, in collaboration with the FRM-II and LLB scientists and engineers, will include:

Instrument duties:


• Ensure, with the in-kind partners, the successful completion of the neutron instrument project in close collaboration with the lead engineer;
• Provide scientific guidance and support to CSPEC work package team;
• Provide an interface between ESS Technical Groups and in-Kind partners and take part in the testing of components;
• Follow and support the installation of the complete neutron instrument;
• Focus on the integration of sample environment, detector capabilities and data curation and analysis;
• Perform, with the in-kind partners, the cold and hot commissioning of the neutron instrument. In particular prepare “First Science” experiments during the initial operation phase of ESS;
• Contribute to the development of relevant ESS support facilities and infrastructure. Once in operation support the user programme at ESS by performing local contacting duties and collaborative research;
• Once CSPEC is completed there will be opportunities to perform the planning, design, and evaluation of other instrumentation concepts through calculations, simulations and test-experiments.

Scientific duties:           


• Conduct scientific or technical research and author scientific or technical publications;
• Establish and maintain constructive contacts with universities, laboratories and other relevant actors;
• Take part in peer review of scientific publications, grant proposals, research, and facilities;
• Represent ESS at appropriate conferences and workshops;
• Present scientific and technical research at the relevant conferences and workshops, and in seminars and lectures;
• Engage with the scientific community through involvement in standards groups, conference organization and professional bodies as appropriate;
• Supervise post docs and students and participate in teaching activities, as appropriate.

Required qualifications


• A PhD in the physical or chemical sciences or any adjacent disciplines with experience studying low lying collective and quasiparticle excitations using neutron scattering techniques;
• Knowledge of neutron scattering data treatment and modeling at a level sufficient to guide the development of instrument specific software;
• Experience and technical interest in instrumentation, preferably using time-of-flight;
• Ability to work in a team with people of a variety of disciplines in an international collaboration;
• Excellent oral and written English skills;
• Flexibility to travel;
• The project requires occasional travel between ESS, FRM-II and LLB based in Germany, France, respectively, and possibly further partner laboratories.

Further preferred skills


• Experience with neutron polarisation analysis;
• Basic programming experience in Python;
• Experience in Monte Carlo ray tracing simulations.

Duration & Location

The position is a fixed term 3 year position, full-time position located in Lund, Sweden.

Application & Contact

Please provide your CV in English by clicking on “apply” and following the instructions.

The position will be open until filled.

For further information please contact the Division Head for Spectroscopy Pascale Deen, [email protected].


For further information regarding the recruitment process, please contact Recruitment Partner, Kate Quaak, [email protected].

For trade union information, please contact Unionen representative Mikael Johansson at [email protected] or SACO/Swedish Association of Graduate Engineers representative Marc Kickulies at [email protected]

 

We look forward to receiving your application! Visa mindre

Junior Engineer or Scientist to innovate on Cryomodule sustainability

The European Spallation Source is one of the largest science and technology infrastructure projects being built today. The project includes the most powerful linear proton accelerator ever built, a five-tonne, helium-cooled tungsten target wheel, 15 state-of-the-art neutron instruments, a suite of laboratories, and a super-computing data management and software development centre. In the context of its history and future as a scientific organisation, howev... Visa mer
The European Spallation Source is one of the largest science and technology infrastructure projects being built today. The project includes the most powerful linear proton accelerator ever built, a five-tonne, helium-cooled tungsten target wheel, 15 state-of-the-art neutron instruments, a suite of laboratories, and a super-computing data management and software development centre. In the context of its history and future as a scientific organisation, however, it is more than the sum of its parts. It is a brand-new Big Science organisation, and we are building it from the ground up.

Come and build the future of Science with us!

About the project:

ESS is participating the EU Funded project ‘Innovate for Sustainable Accelerating Systems’ (iSAS). The project aims to develop and integrate energy-efficient technologies into superconducting radiofrequency (SRF) accelerating systems. This initiative seeks to enhance the sustainability of particle accelerators, contributing to Europe's Green Deal and maintaining its leadership in fundamental science. You can learn more about the project at https://isas.ijclab.in2p3.fr/

We are seeking a motivated Junior Scientist or Engineer to join ESS linac group and contribute to the iSAS project, focusing on the integration of energy-saving technologies into our linac cryomodules. If you are chosen for this exciting role, you will:


• Compile the lessons learned from the ESS cryomodule design, testing activities, technical commissioning, and initial operation and benchmark the ESS cryomodule findings with other worldwide projects.
• Work on a roadmap for the development of a new, sustainable cryomodule design while exploring the sustainability criteria and integrating the findings from the other iSAS work packages.
• Participate in modifications to the existing cryomodule based on feedback from assembly and testing experience.
• Participate in the adaptation of the current test facility stand and in the qualification with the iSAS cryomodule
• Take part in the day-to-day activities of the ESS linac team with the goal of promoting reliable operation of the facility.

This is a grant funded position for a fixed-term period of 2 years. The role is based at the ESS Campus in Lund, Sweden in collaboration with our partners from the iSAS project.

About you:

To be considered for this exciting opportunity, you need to have a master’s degree in physics, engineering, or a closely related field. Experience in accelerator technology, cryomodule design, mechanical design or related areas would be advantageous. Familiarity with energy-efficient technologies and sustainable engineering practices is also beneficial.

In addition to this, you must possess strong analytical and problem-solving abilities as well as demonstrable proficiency in design and simulation software. The working language of ESS is English, and we need someone who can start as soon as possible. Knowledge of other European languages is always beneficial.

To thrive at ESS, you need to have excellent communication and interpersonal skills as these are vital for effective collaboration with a diverse group of scientists, engineers, and technical staff within a multidisciplinary team. We are looking for a highly analytical and detail-oriented individual who enjoys critically evaluating information to make data-driven decisions. You can balance theoretical concepts with practical applications and have a sharp eye for identifying potential limitations or errors. As a natural problem solver, you love to generate creative, inventive ideas and explore new perspectives. Others describe you as energetic and proactive, as you work best in a fast-paced environment with plenty to do and are always ready to take on new challenges.

To apply:

If you see yourself in what we’re looking for, please provide your CV and motivation letter in English by clicking on “apply” and following the instructions. Please be aware that we can only accept direct applications made via the ESS website. Submit your application as soon as you can and quote the job reference number ESD-63250 in your application.

This role requires additional background screening processes and health and safety checks, which will be performed during the recruitment process.

For further information regarding the position, please contact Talent Acquisition Specialist Daniel Nordin Baker on [email protected]

For trade union information, please contact Unionen representative Mikael Johansson on [email protected] or SACO/Swedish Association of Graduate Engineers representative Marc Kickulies at [email protected]

We look forward to receiving your application! Visa mindre

Summer worker – Data analyst for cryogenic systems

The European Spallation Source (ESS) in Lund, Sweden is a partnership of 13 European countries with the mission to design, construct and operate the world’s most powerful neutron source. Working with us means being part of a challenging and exciting work environment, at a stunning, brand new workplace filled with innovative minds and brilliant people from across the globe.  About the position  We are now looking to appoint a summer worker for the Cryoge... Visa mer
The European Spallation Source (ESS) in Lund, Sweden is a partnership of 13 European countries with the mission to design, construct and operate the world’s most powerful neutron source.

Working with us means being part of a challenging and exciting work environment, at a stunning, brand new workplace filled with innovative minds and brilliant people from across the globe. 

About the position 

We are now looking to appoint a summer worker for the Cryogenics group in the Accelerator Division.  

The Cryogenics Group works alongside other groups in the Accelerator Division to define, design, install, commission and finally operate and maintain the cryogenic systems of the ESS. These efforts extend also to cryogenic needs in the Target Division and the Science Directorate. 

The ESS cryogenic systems are currently in commissioning phase. Performance tests are being conducted on key components, including circulation hydrogen pump, heat exchanger, expansion turbine, catalyst, control valve, flow meter, as well as overall system performance tests. These tests aim to verify the cryogenic system design and to optimize operational conditions, leading to the establishment of an automatic control system. Additionally, ESS has developed a high-accuracy Raman optical system to measure the parahydrogen fraction at 17 K. 

Throughout the commissioning period, a large amount of experimental data is being collected. Prompt data analysis is crucial to efficiently acquire test data and ensure the commissioning is completed on schedule. 

To support this effort, we are seeking a summer worker to assist with data analysis. 

About you 

A suitable background for this position would be:


• Experience with programming (C, Java, Python etc.), which will be used to analyze the data.
• Experience in data analysis, particularly I. the following field: Thermodynamics, fluid dynamics, heat transfer and Raman spectroscopy.
• Good written and oral communication skills in English.
• Minimum age 18 years.

Furthermore, it would be great if you have:


• Knowledge of 3D model drawing for CFD analysis (FLUENT).
• Knowledge of CFD analysis.

We believe that you enjoy communicating and collaborating with a variety of people in an international environment. You are good at taking initiative and not afraid to ask questions. 

Duration and location

This is a summer work position of 6-8 weeks or per agreement. 

Planned start date is in June, 2025 – exact starting date to be agreed upon with the final candidate.

Your workplace is on-site at ESS in Lund, Sweden.  

How to apply

Please provide your CV in English by clicking on “apply” and following the instructions. Please note that we only accept applications via the ESS website. The last day to apply is 26 April, 2025 but we review applications continuously, so please apply as soon as you can. 

Certain roles at ESS require health and safety and/or security checks, which may be carried out during the recruitment process.   

For further information regarding the position, please contact Recruiting Manager Philipp Arnold at [email protected]   

For trade union information, please contact Unionen representative Mikael Johansson at [email protected] or SACO/Swedish Association of Graduate Engineers representative Marc Kickulies at [email protected]   

We look forward to receiving your application! Visa mindre

Summer worker – Web Content Administrator

The European Spallation Source (ESS) in Lund, Sweden is a partnership of 13 European countries with the mission to design, construct and operate the world’s most powerful neutron source.  Working with us means being part of a challenging and exciting work environment, at a stunning, brand-new workplace filled with innovative minds and brilliant people from across the globe.  About the position  We are now looking to appoint a summer worker for the Asset... Visa mer
The European Spallation Source (ESS) in Lund, Sweden is a partnership of 13 European countries with the mission to design, construct and operate the world’s most powerful neutron source. 

Working with us means being part of a challenging and exciting work environment, at a stunning, brand-new workplace filled with innovative minds and brilliant people from across the globe. 

About the position 

We are now looking to appoint a summer worker for the Asset and Maintenance Management (AMM) function in the Engineering Management Group.  

The Asset and Maintenance Management function is responsible for support in setting up, implementing and maintaining processes, functionalities and information management in EAM. The function also supports the entire organization with maintenance management framework and strategies. 

As a Web Content Administrator summer worker your main tasks will be to:


• Review and analyze existing Confluence pages and guidelines to assess their structure, clarity, and usability.
• Update and reorganize content within Confluence to ensure consistency, coherence, and easy navigation.
• Ensure that documents are aligned with the best practices for user experience.
• Create and maintain clear, standardized templates for documentation.
• Help streamline the navigation of the knowledge base for users by improving internal linking, categorization, and searchability


About you 

A suitable background for this position would be:


• Currently enrolled in a relevant degree program (e.g., Information Design, Informatics, Communications, Business, IT, or related fields).
• Working knowledge of Confluence Atlassian and able to create and modify content.
• Knowledge of other content management systems and how to efficiently use them to collaborate.
• Good written and oral communication skills in English.
• Minimum age 18 years.

We believe that you enjoy communicating and collaborating with a variety of people in an international environment. You are good at taking initiative and not afraid to ask questions. 

Duration and location 

This is a summer work position for an estimated time of 6-8 weeks. 

Planned start date is 11 June, 2025 or per agreement.

Your workplace is on-site at ESS in Lund, Sweden.  

How to apply 

Please provide your CV in English by clicking on “apply” and following the instructions. Please note that we only accept applications via the ESS website. The last day to apply is 20 April, 2025. 

Certain roles at ESS require health and safety and/or security checks, which may be carried out during the recruitment process.   

For further information regarding the position, please contact Recruiting Manager Ola Nanzell at [email protected] 

For trade union information, please contact Unionen representative Mikael Johansson at [email protected] or SACO/Swedish Association of Graduate Engineers representative Marc Kickulies at [email protected]   

We look forward to receiving your application! Visa mindre

Summer worker – Data Quality Management

The European Spallation Source (ESS) in Lund, Sweden is a partnership of 13 European countries with the mission to design, construct and operate the world’s most powerful neutron source.  Working with us means being part of a challenging and exciting work environment, at a stunning, brand-new workplace filled with innovative minds and brilliant people from across the globe.  About the position  We are now looking to appoint a summer worker for the Licen... Visa mer
The European Spallation Source (ESS) in Lund, Sweden is a partnership of 13 European countries with the mission to design, construct and operate the world’s most powerful neutron source. 

Working with us means being part of a challenging and exciting work environment, at a stunning, brand-new workplace filled with innovative minds and brilliant people from across the globe. 

About the position 

We are now looking to appoint a summer worker for the Licensing Group in the Operations and Machine Directorate.  

The Licensing Group is responsible for managing permits from the Swedish Radiation Safety Authority and upholding compliance with their regulatory framework. In this work, we rely on an extensive documentation package to prove that ESS will be able to operate a facility that is safe both for the people working here and for the general public. 

As a Data Quality Management summer worker, your main task will be to develop code/scripts for identification and correction of various anomalies in documentation and metadata. Some code/scripts have already been developed, but there is a need to ensure accuracy, efficiency, flexibility and repeatability. A key success factor is to be able to integrate a number of components into a working solution. Depending on the available time the work could also be extended to include ETL (Extract, Transform, Load) pipelines from source systems to data storage for further analysis or usage in e.g. Excel or Power BI.  

About you 

A suitable background for this position would be:


• A minimum of three years of studying Data Science, Computer science, Informatics, Engineering or similar.
• Practical experience in using Python (preferred language) and libraries related to data analytics (e.g. Numpy, Pandas, SciKit-Learn, spaCy, NLP)
• Experience in using Excel with VBA scripts and Power Queries.
• Any previous experience with Power Automation, Power BI (or similar BI analytics applications) would be considered an advantage.
• Good written and oral communication skills in English.

• Minimum age 18 years.

We believe that you enjoy communicating and collaborating with a variety of people in an international environment and that you are structured and good at documenting your work. You are good at taking initiative, taking responsibility for the results and not afraid to ask questions when you get stuck.   

We intend to bring in an additional summer worker in Natural Language Processing, Machine Learning and AI, and if beneficial, you could partly collaborate around the results. 

Duration and location

This is a summer work position for six weeks starting in June, with an exact date to be agreed. Your workplace is on-site at ESS in Lund, Sweden.  

How to apply 

Please provide your CV in English by clicking on “apply” and following the instructions. Please note that we only accept applications via the ESS website. The last day to apply is 10 April, 2025. 

Certain roles at ESS require health and safety and/or security checks, which may be carried out during the recruitment process.   

For further information regarding the position, please contact Recruiting Manager Carl Tillman at [email protected], or Johan Waldeck at [email protected] 

For trade union information, please contact Unionen representative Mikael Johansson at [email protected] or SACO/Swedish Association of Graduate Engineers representative Marc Kickulies at [email protected]

We look forward to receiving your application! Visa mindre

Instrument technician

The European Spallation Source ERIC (ESS) in Lund, Sweden, is one of the largest science and technology infrastructure projects being built today. The project includes the most powerful linear proton accelerator ever built, a five-tonne, helium-cooled tungsten target wheel, 15 state-of-the-art neutron instruments, a suite of laboratories, and a supercomputing data management and software development centre. In the context of its history and future as a sci... Visa mer
The European Spallation Source ERIC (ESS) in Lund, Sweden, is one of the largest science and technology infrastructure projects being built today. The project includes the most powerful linear proton accelerator ever built, a five-tonne, helium-cooled tungsten target wheel, 15 state-of-the-art neutron instruments, a suite of laboratories, and a supercomputing data management and software development centre. In the context of its history and future as a scientific organisation, however, it is more than the sum of its parts. It is a brand new Big Science organisation and we are building it from the ground up.   

Come and build the future of Science with us!   

About the role 

The Fluid Systems Group at ESS currently consists of twelve staff members, and is now seeking to appoint a new Instrument technician. The technician will play a vital part as ESS approaches Steady state operations in 2028. 

The Fluid Systems Group within the ESS Target Division, is part of the ESS Operations and Machine Directorate, with responsibility to design, develop, procure, install, commission and test the systems needed to convert the energetic proton beam coming from the ESS accelerator, to neutron beams that are utilised for experiments. 

Among the main responsibilities for this position are:


• Daily inspection of systems and components during operation, specifically instrumentation devices.
• Hands-on work, for example:

• Checking signals from instruments (pressure, temperature, flow, level etc.)
• Controlling instruments and exchange if needed
• Calibrating transmitters
• Controlling valves/actuators and exchange if needed
• Controlling pumps/compressors

• Preparing and performing preventive maintenance.
• Preparing and performing or leading exchange of components when needed.
• Training on maintenance tasks in mock-up before performing on-site.
• Proposing improvements to procedures, components and systems where needed.
• Documenting and reporting performed tasks and following safety instructions.
• Supporting our Main Control Room if issues occur.

This is a permanent position with a six-month probationary period. It is an on-site position in Lund, Sweden, and we need someone who can start as soon as practically possible. In the future, this role may require some on-call duties and/or shift work, which will be compensated for according to our collective agreement. 

About you 

To be successful in this hands-on, practical role, we believe you have technical training at high school level or equivalent. Alternatively, you have long experience from working in the technical field, preferably with instrument devices from process industry, for example paper or oil and gas. You have a great interest in learning more about different technical techniques/components, and depending on your knowledge and interest you can also influence your future development at ESS. 

It is an advantage if you are familiar with devices used in process industries such as temperature, pressure, flow, level measurement devices.

Furthermore, you have general IT and computer skills. You can communicate in English, as it is the working language of ESS, and would enjoy working in an international organisation.  

As a person you enjoy communication and collaboration, both within and outside your team, and you would find it exciting to be part of this new group of technicians. 

You find it important to plan, organise and take responsibility for your work, whilst following instructions and procedures. 

What we offer

Aside from the chance to work at a truly unique Big Science project, you can also expect:   


• An opportunity to contribute to future discoveries within neutron science.
• A stunning, brand new workplace filled with innovative minds and brilliant people from across the globe.
• A challenging, innovative and stimulating work environment.
• 25 days of annual leave, as well as more than 10 days of public holiday and company days off or days with limited working hours.
• Monthly pension contributions on top of your salary.
• Focus on work-life balance.
• Preventative healthcare benefit.

How to apply 

If you see yourself in what we’re looking for, please provide your CV in English by clicking on “apply” and following the instructions. Please be aware that we can only accept direct applications made via the ESS website. We will review applications and also interview continuously so please apply as soon as you can, or by 14 April, 2025 at the latest.   

Certain roles at ESS require health and safety and/or security checks, which may be carried out during the recruitment process.    

For more information regarding the ESS recruitment process, please see https://europeanspallationsource.se/careers or contact Recruitment Officer Åsa Ander at [email protected]    

For further information regarding the position, please contact the hiring manager Håkan Carlsson at [email protected]    

For trade union information, please contact Unionen representative Mikael Johansson at [email protected] or SACO/Swedish Association of Graduate Engineers representative Marc Kickulies at [email protected]    

We look forward to receiving your application! Visa mindre

Summer worker – Natural Language Processing, Machine Learning and AI

The European Spallation Source (ESS) in Lund, Sweden is a partnership of 13 European countries with the mission to design, construct and operate the world’s most powerful neutron source.  Working with us means being part of a challenging and exciting work environment, at a stunning, brand-new workplace filled with innovative minds and brilliant people from across the globe.  About the position We are now looking to appoint a summer worker for the Licens... Visa mer
The European Spallation Source (ESS) in Lund, Sweden is a partnership of 13 European countries with the mission to design, construct and operate the world’s most powerful neutron source. 

Working with us means being part of a challenging and exciting work environment, at a stunning, brand-new workplace filled with innovative minds and brilliant people from across the globe. 

About the position

We are now looking to appoint a summer worker for the Licensing Group in the Operations and Machine Directorate.  

The Licensing Group is responsible for managing needed permits from the Swedish Radiation Safety Authority and upholding compliance with their regulatory framework. In this work, we rely on an extensive documentation package to prove that ESS will be able to operate a facility that is safe both for the people working here and for the general public. 

As an NLP/ML/AI summer worker, your main tasks will be to explore and evaluate ML/AI models that can help to identify potential inconsistencies in documentation and assess compliance as described in documentation in comparison to legislative conditions. You may also be involved in other data management tasks. 

About you

A suitable background for this position would be:


• A minimum of three years of studying Data Science, Computer science, Informatics, Engineering or similar.
• Practical experience in using Python (preferred language) and libraries related to NLP/ML (e.g. NLP, Numpy, Pandas, SciKit Learn, spaCy)
• Practical experience of employing AI models for processing textual content.
• Good written and oral communication skills in English.
• Minimum age 18 years.

We believe that you enjoy communicating and collaborating with a variety of people in an international environment and that you are structured and good at documenting your work. You are good at taking initiative, taking responsibility for the results and not afraid to ask questions when you get stuck.

We intend to bring in an additional summer worker in Data Quality Management, and if beneficial, you could partly collaborate around the results.  

Duration and location

This is a summer work position for six weeks starting in June, with an exact start date to be agreed. Your workplace is on-site at ESS in Lund, Sweden, with potential visits to our Data Management and Software Centre in Copenhagen.  

How to apply

Please provide your CV in English by clicking on “apply” and following the instructions. Please note that we only accept applications via the ESS website. The last day to apply is 10 April, 2025. 

Certain roles at ESS require health and safety and/or security checks, which may be carried out during the recruitment process.   

For further information regarding the position, please contact Recruiting Manager Carl Tillman at [email protected], or Johan Waldeck at [email protected] 

For trade union information, please contact Unionen representative Mikael Johansson at [email protected] or SACO/Swedish Association of Graduate Engineers representative Marc Kickulies at [email protected] 

We look forward to receiving your application! Visa mindre

Summer worker – Documentation and information support

The European Spallation Source (ESS) in Lund, Sweden is a partnership of 13 European countries with the mission to design, construct and operate the world’s most powerful neutron source.  Working with us means being part of a challenging and exciting work environment, at a stunning, brand new workplace filled with innovative minds and brilliant people from across the globe.  About the position Summer worker – Documentation and information support for c... Visa mer
The European Spallation Source (ESS) in Lund, Sweden is a partnership of 13 European countries with the mission to design, construct and operate the world’s most powerful neutron source. 

Working with us means being part of a challenging and exciting work environment, at a stunning, brand new workplace filled with innovative minds and brilliant people from across the globe. 

About the position

Summer worker – Documentation and information support for consultant management

We are now looking to appoint two summer workers for the Centralized Consultant Administration Project in the Design & Engineering division. This is a project that supports all of ESS.   

The Centralized Consultant Administration Project is responsible for improving and streamlining work related to how ESS administrates consultants. 

As an Administrative Support summer worker your main tasks will be to organize existing information, suggest rules for managing central inboxes, perform registration in databases and support the project with other administrative tasks. Instructions will be given for each task. 

About you 

A suitable background for this position would be:


• Completed high school/gymnasiet.
• At least 1-2 year of university education is preferable but not a requirement.
• At least 1-2 longer summer work assignments or similar experience is preferable but not a requirement.
• Good written and oral communication skills in English.
• Minimum age 18 years.

We believe that you enjoy communicating and collaborating with a variety of people in an international environment. You are good at taking initiative and not afraid to ask questions.

Being thorough and organized is a core skillset to manage this work. 

Duration and location 

This is a summer work position of 5-8 weeks, as agreed, but within an uninterrupted period.

Planned start date is 2025-06-16 or per agreement.

Your workplace is on-site at ESS in Lund, Sweden.  

How to apply 

Please provide your CV in English by clicking on “apply” and following the instructions. Please note that we only accept applications via the ESS website. The last day to apply is 2025-04-30. 

Certain roles at ESS require health and safety and/or security checks, which may be carried out during the recruitment process.   

For further information regarding the position, please contact Recruiting Manager Karen Jonsdottir at [email protected]   

For trade union information, please contact Unionen representative Mikael Johansson at [email protected] or SACO/Swedish Association of Graduate Engineers representative Marc Kickulies at [email protected]   

We look forward to receiving your application! Visa mindre

PhD candidate in radiation physics and activation analysis

The European Spallation Source is one of the largest science and technology infrastructure projects being built today. The project includes the most powerful linear proton accelerator ever built, a five-tonne, helium-cooled tungsten target wheel, 15 state-of-the-art neutron instruments, a suite of laboratories, and a supercomputing data management and software development centre. In the context of its history and future as a scientific organisation, howeve... Visa mer
The European Spallation Source is one of the largest science and technology infrastructure projects being built today. The project includes the most powerful linear proton accelerator ever built, a five-tonne, helium-cooled tungsten target wheel, 15 state-of-the-art neutron instruments, a suite of laboratories, and a supercomputing data management and software development centre. In the context of its history and future as a scientific organisation, however, it is more than the sum of its parts. It is a brand-new Big Science organisation and we are building it from the ground up.

The Operations and Machine Directorate at the European Spallation Source (ESS) in Lund, Sweden, in cooperation with the ESS Science Directorate and Lund University, invites applications for a PhD position in the area of theoretical and experimental radiation transport physics within the ESS Spallation Physics Group.

Come and build the future of Science with us!

About the Spallation Physics Group:
The ESS Target Division, including the ESS Spallation Physics Group, is responsible for designing, developing, procuring, installing, commissioning, and testing the systems required to convert the energetic proton beam from the accelerator into neutron beams used for experiments.

Key features of the ESS Target Station include the target itself, the neutron moderator and reflector system, and the neutron beam-extraction system. However, the ESS Spallation Physics Group's responsibilities extend beyond the target, covering spallation physics topics ESS-wide. These responsibilities include but are not limited to:


• Activation and inventory calculations of radionuclides across the facility.
• Particle transport simulations to optimize the target-moderator-reflector system, assess component lifetimes, and conduct shielding and activation analyses.
• Development of computational tools and thermal and cold neutron scattering cross-sections (scattering kernels) for particle transport simulations.
• Experimental verification and development of new moderator-reflector systems and other spallation physics-related concepts.
• Study of materials relevant to the operation and performance of the facility.
• Supporting neutron scattering instrument teams by providing e. g. source terms for instrument optimization.

Position Description:

During operation of the European Spallation Source, components of the machine and instruments will be exposed to radiation and become activated. The activation levels after shutdown of the facility are important for defining possibilities for radiological clearance of the irradiated components. As a part of these efforts we are developing software tools and methodologies for quick and efficient characterization of activation levels throughout the facility.

The PhD candidate will work on the development and benchmarking of tools and methodologies for applications in clearance and release of radioactive material, with a focus on difficult to measure isotopes at the European Spallation Source. This involves Monte-Carlo simulations and activation calculations, such as PHITS/MCNP and DCHAIN-PHITS/CINDER. A main aim will be to calculate radionuclide vectors and their uncertainties at any location throughout the facility in a timely manner.

Along with calculating radionuclide vectors, a significant part of the work will be planning, leading and carrying out benchmark studies against other software tools and/or measurements performed either at the European Spallation Source or other accelerator-based facilities together with the Radiation Protection Group.

The successful candidate will be part of the ESS Spallation Physics Group, while also collaborating closely with neutron scattering instrument teams.

Qualifications and candidate profile:

To be eligible for this PhD studentship, the following qualifications are required:


• You must be eligible for the PhD program in physics at the Science Faculty at Lund University (https://www.lunduniversity.lu.se/admissions/doctoral-studies)
• A "Sherlock Holmes" kind of mindset; ready to tackle complex and multi-dimensional challenges.
• Excellent communication skills and ability to work effectively in a multicultural, international environment.
• A proactive and self-motivated attitude, with a willingness to take initiative.
• The ability to work as part of a team, but also the capability to work independently.
• Fluency in English, both written and spoken.

In addition to the required qualifications, the following experience would be considered advantageous:


• Experience with radiation transport codes such as PHITS, MCNP(X), or FLUKA and high-performance computing techniques.
• Knowledge in programming languages such as Python, C++, and FORTRAN, object oriented programing, and development of graphical interfaces.
• Experience in using activation codes, such as DCHAIN-PHITS or CINDER, to calculate nuclide inventories.
• Knowledge of radiation measurement methods.
• Experience with nuclear data.
• Prior experience of working at spallation sources.
• Experience as a user at neutron sources.

To apply:

If you see yourself in what we’re looking for, please provide your CV and motivation letter in English by clicking on “apply” and following the instructions. Please be aware that we can only accept direct applications made via the ESS website.

Certain roles at ESS require health and safety checks and/or security clearance procedures, which will be performed as part of the recruitment process.

We review applications continuously, so don’t miss out! Submit your application as soon as you can and quote the job reference number ESD-56580 in your application.

For more information regarding the ESS recruitment process, please contact Daniel Nordin Baker on [email protected] 

For trade union information, please contact Unionen representative Mikael Johansson on [email protected] or SACO/Swedish Association of Graduate Engineers representative Marc Kickulies at [email protected] 

We look forward to receiving your application soon! Visa mindre

Instrument Scientist for ESTIA

The European Spallation Source (ESS) is a partnership organization of 13 European member countries located in the city of Lund, Sweden. The ESS is hiring motivated and inspiring people from across the globe to design, construct and operate the world’s most powerful neutron source. We seek collaborative, talented people in a range of fields who are excited about playing a part in the future of science in Europe. The ESTIA instrument at ESS is looking for a... Visa mer
The European Spallation Source (ESS) is a partnership organization of 13 European member countries located in the city of Lund, Sweden. The ESS is hiring motivated and inspiring people from across the globe to design, construct and operate the world’s most powerful neutron source. We seek collaborative, talented people in a range of fields who are excited about playing a part in the future of science in Europe.

The ESTIA instrument at ESS is looking for an Instrument Scientist. This is a critical role that exists within the Large-Scale Structures Division. ESTIA is a focusing reflectometer designed specifically with the needs of the condensed matter and magnetic materials communities in mind, and will be among the first instruments to become operational at ESS. Supported by the ESTIA team including the lead scientist, data scientist, operations engineer, and our in-kind partner, the Paul Scherrer Institut (PSI), you will be tasked with helping to deliver the ESTIA instrument to hot commissioning and prepare the instrument for user operations. Further, your responsibilities and qualifications will include:

About the team:

The tasks and responsibilities of the ESTIA instrument team include but are not limited to:


• Finalize installation of the ESTIA instrument.
• Commissioning of the instrument, both with and without neutrons.
• Plan and implement further developments and upgrades of the instrument.
• Deliver state-of-the-art scientific capabilities for internal and external users to enable the wider science community to advance science and technology.
• Push the state-of-the-art capabilities of neutron reflectometry.

Your role and responsibilities:


• Work with the ESTIA team, and our in-kind partner PSI, to plan and execute the instrument cold and hot
• Help to prepare “First Science” experiments to be carried out during the initial operation phase of ESS.
• Provide expertise in the scientific application of neutron reflectometry and in neutron reflectometry method development.
• Continue and develop your own research in line with the ESTIA science case.
• Establish and maintain collaborations with universities, laboratories and other relevant actors.
• Engage with the international reflectometry community, e.g. through presentations at conferences/workshops and experiments at other facilities.
• Once in operation, support the user programme at ESS by performing local contacting duties and collaborative research.

Required qualifications:


• PhD in the physical sciences with research interests and publication record aligned with the science focus of the ESTIA instrument, which includes condensed matter and magnetism.
• Experience and technical interest in polarized neutron reflectometry, preferably using time-of-flight techniques, including knowledge of data treatment and modeling.
• Ability to work in a team with people of a variety of disciplines in an international collaboration.
• Excellent written and oral English skills.
• Flexibility to travel. The project requires occasional travel between ESS and partner facilities.

Additional desirable qualifications and experience:


• Operation and development of neutron instrumentation and/or instrument control.
• Programming experience in Python.
• Complementary experience from and competence in x-ray reflectivity.
• Proven track record of using polarized neutron reflectivity.

Duration & Location

The position is a 3-year full-time position located in Lund, Sweden.

Application & Contact

Please provide your CV in English by clicking on “apply” and following the instructions.

The position will be open until filled.

For more information regarding the ESS recruitment process, please follow this link https://europeanspallationsource.se/ess-recruitment- process.

For further information regarding the position, please contact the Line Manager, Andrew Jackson, Head of the Large-Scale Structures Division, [email protected].

For further information regarding the recruitment process, please contact Recruitment Partner, Kate Quaak, [email protected].

For trade union information please contact Unionen / Conny Wendt at +46 72 179 24 63 or SACO / Swedish Association of Graduate Engineers/ Yngve Levinson at +46 72 179 21 65

We look forward to receiving your application! Visa mindre