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!

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 . 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-52776 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 Daniel Nordin Baker – Recruitment partner – at Daniel.Nordin@ess.eu. For further information regarding the position, please contact the hiring manager via Nick.Gazis@ess.eu
For trade union information, please contact Unionen representative Mikael Johansson on Mikael.Johansson@ess.eu or SACO/Swedish Association of Graduate Engineers representative Marc Kickulies at marc.kickulies@ess.eu
We look forward to receiving your application soon!
URL to this pagehttps://europeanspallationsource.se/careers/vacancies?rmpage=job&rmjob=1754&rmlang=U

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 looking for a senior Mechanical Engineer to join our Mechanical Engineering, Technology & Analysis (META) Group.
As a Senior Mechanical Engineer within the META Group, you will play a crucial role in supporting and advancing the mechanical infrastructure that underpins our world-leading research facility. The META Group provides essential engineering services across the organisation, from mechanical design and machine engineering to analysis, simulations, and finite element analysis (FEA). This role is a unique opportunity to contribute to the engineering excellence that drives ESS’s mission.
In this position, you will be responsible for delivering high-quality mechanical engineering solutions with a primary focus on mechanical design, detailed drawings (including ISO GD&T), mechanical analysis (including FEA), and manufacturing follow-up. As a mechanical engineering authority within ESS, you’ll take on a dual assignment; supporting the Vacuum Engineering Group and the Beam Instrumentation Group, with occasional tasks from the Superconducting RF group as well as other parts of the facility. You may also work on ad-hoc assignments from the core META team as needed.
Working closely with the Mechanical Engineering Technology & Analysis (META) Group Leader, you will ensure that your work aligns with ESS standards for quality, safety, and engineering excellence. You’ll also collaborate with work package leaders, project managers, and fellow engineers to deliver project milestones and foster a safe, professional environment. Additionally, you’ll act as the design authority on all models and drawings within your area, overseeing mechanical reviews, engineering requirements coordination, and component production follow-up to ensure designs meet both functional and safety standards.
This is a full-time, permanent role based at the ESS Campus in Lund, Sweden. It requires exceptional coordination with other teams and consistent adherence to ESS safety regulations and best practices. You will also be responsible for specifying the granularity of models and drawings, working closely with Spatial Integration to maintain ESS’s Functional Breakdown Structure (FBS) documentation.