Superconducting RF Mechanical Engineer (SY-RF-SRF-2026-94-LD)

At CERN, the European Organization for Nuclear Research, physicists and engineers are probing the fundamental structure of the universe. Using the world's largest and most complex scientific instruments, they study the basic constituents of matter - fundamental particles that are made to collide together at close to the speed of light. The process gives physicists clues about how particles interact, and provides insights into the fundamental laws of nature. 

Introduction

Join CERN’s Superconducting Radiofrequency (SRF) team and help design next-generation cryomodules for future particle accelerators, including the FCC-ee project, and you will work in a multidisciplinary environment developing advanced cryogenic and radiofrequency systems at the forefront of accelerator technology.

Functions

• Participate, and gradually take up a lead role, in the cryomodule design and integration of the SRF cavities and associated systems, as well as the assembly processes, in clean-room and outside clean-room, and associated special tooling.
• Work collaboratively with multidisciplinary teams at CERN and partner laboratories.
• Take up lead of the cryogenic engineering activities, including thermal performance and safety considerations.
• Ensure mechanical designs meet applicable safety and regulatory requirements, in particular for pressure vessels.
• Coordinate design, prototyping and testing activities with engineering and technical teams.
• Monitor progress and share results through reports and presentations.

Master's degree or equivalent relevant experience in the field of Mechanical Engineering or a related field.

 

Experience:

Required experience:

• Experience designing cryogenic mechanical systems.
• Knowledge of heat transfer and structural analysis on cryogenic systems.
• Experience with CAD tools (e.g. CATIA, Inventor, SolidWorks) and FEA software.

Desired experience:

• Experience with cryogenic systems or superconducting technologies.
• Familiarity with pressure vessel design and safety standards. 
• Familiarity with cleanroom assembly requirements.
• Background in scientific instrumentation or large research projects.

Technical competencies:

• Design and construction of cryostats.
• Knowledge and application of cryogenic heat transfer and insulation techniques.
• Design and analysis of mechanical structures.
• Knowledge and application of RF techniques.

Behavioural competencies:

• Working in Teams: working well in groups and readily fitting into a team; participating fully and taking an active role in team activities.
• Demonstrating Accountability: taking responsibility for own actions and decisions.
• Managing Self: taking initiative beyond regular tasks and making things happen.
• Learning and Sharing Knowledge: thinking "out of the box" and proposing fresh ideas, insights and methodologies.
• Demonstrating Flexibility: adapting quickly and resourcefully to shifting priorities and requirements.

Language skills:

Spoken and written English, with a commitment to learn French.

Eligibility and closing date:

Diversity has been an integral part of CERN's mission since its foundation and is an established value of the Organization. Employing a diverse workforce is central to our success. We welcome applications from all Member States and Associate Member States.

This vacancy will be filled as soon as possible, and applications should normally reach us no later than 24.05.2026 at 23:59 CEST.

Employment Conditions

Contract type: Limited duration contract (5 years). Subject to certain conditions, holders of limited-duration contracts may apply for an indefinite position.

Working Hours: 40 hours per week

Job Flexibility: Hybrid

This position involves:

• Participation in a regular stand-by duty, including nights, Sundays and official holidays.
• Work in Radiation Areas.
• Interventions in underground installations.
• A valid driving licence.
• Exposure to electromagnetic fields under certain exposure conditions.
• Given the occupational health risks associated with this position, the selected candidate must obtain medical clearance before a contract offer is confirmed.

Job grade: 6-7

Job reference: SY-RF-SRF-2026-94-LD

Field of work: Mechanical Engineering

Benchmark Job Title: Mechanical Engineer

Global Benefits

• A competitive salary (tax free), increasing in line with your years of relevant experience.
• 30 days of paid leave per year plus 2 weeks annual closure.
• Coverage by CERN’s comprehensive health insurance scheme (for yourself, your spouse and children), and membership of the CERN Pension Fund.
• Family, child and infant monthly allowances depending on your individual circumstances.
• A relocation package (installation grant, removal, travel expenses) depending on your individual circumstances.
• Possibility to extend your contract up to 8 years + eligibility for indefinite contract tenure.

Overview of CERN - Discover a world where the impossible is made possible!

At CERN, the European Organization for Nuclear Research, we are pushing the frontiers of science and technology. Our groundbreaking work brings together not only physicists but also a diverse range of professionals from engineering, technical, scientific, and administrative fields. Together, we foster an environment where innovation and collaboration thrive.

Every day, we face exciting new challenges and opportunities to contribute to cutting-edge research that shapes our understanding of the universe. We meet these challenges through the diverse perspectives within our teams, ensuring every contribution is valued and driving our shared sense of inclusion and purpose. Diversity is a core value of CERN since its foundation, and it remains central to our mission and continued success.

If you are ready to be part of a dynamic, inclusive community pushing the boundaries of knowledge, CERN is the place where your curiosity and skills can thrive. Be part of our mission to uncover what lies at the heart of the universe! TAKE PART!

More information about us, here: careers.cern