Mechanical Engineer

Switzerland flag Geneva, Switzerland TE-CRG-ME-2025-148-LD Ideal start date: 01/02/2026
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Before 14/01/2026 at 23:59 (Geneva Time)

What you'll do

It’s big, it’s loud, it’s cold, and it’s one of the most challenging and exciting environments you can work in! Join the mechanical engineering team of the Cryogenic Group for a unique opportunity to work on machines that constitute nearly half of the world’s large helium liquefiers. CERN, Take Part!

At CERN, helium needs to flow like water from a tap. CERN is the world’s largest particle physics laboratory and its flagship accelerator, the Large Hadron Collider, depends on having an unrivalled set of cryogenic systems on hand to guarantee reliable operation. To sustain and extend its discovery potential, the LHC in undertaking a major upgrade, known as High Luminosity LHC (HL-LHC). New large-scale cryogenic infrastructure interfacing with existing machines and cryogenic distribution lines will be required.


The Cryogenics Group (CRG) in the Technology Department (TE) is responsible for the design, construction, commissioning, operation, and maintenance of cryogenic systems for accelerators and detectors, as well as for cryogenic test facilities. The group also supports low-temperature developments and tests at the Central Cryogenic Laboratory, which provides expertise in cryogenic design and instrumentation.


Your responsibilities

  • Designing cryogenic equipment and overseeing its construction in close collaboration with external suppliers and internal partners. Managing the associated technical documentation;
  • Organising the installation of complex cryogenic equipment. Preparing and managing the corresponding quality controls and documentation;
  • Contributing to project management activities and quality assurance.
  • Managing components procurement and production follow-up.

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Your profile

  • Demonstrated experience in the mechanical design of industrial equipment, preferably including pressure equipment;
  • Contributing to the management of industrial projects, including planning, coordination of installation and commissioning activities, and interaction with suppliers and contractors;
  • Experience with complex industrial processes, particularly in cryogenics or vacuum technologies, would be an asset.
  • Master's degree or PhD or equivalent relevant experience in the field of Mechanical Engineering or a related field.

Your skills

  • Design and analysis of mechanical structures: including thermo-mechanical analysis;
  • Knowledge and application of thermodynamics and energetics, including heat transfer and fluid mechanics;
  • Knowledge and application of manufacturing methods and work preparation, including definition, process, preparation, planning, drawing, and control.
  • Project management: including knowledge of tools and methods.
Ideal start date: 01/02/2026
Contract duration: 48 month contract
Grade range: 6
Benchmark job: 200090 - Mechanical Engineer
Job flexibility: Fully on-site

Medical hazard

  • Exposure to ionising radiation and classified as category A.
Given the occupational health risks associated with this position, the selected candidate must obtain medical clearance before a contract offer is confirmed.

Employment conditions

  • A valid driving licence.
  • Stand-by duty, and work during nights, Sundays and official holidays, when required by the needs of the Organisation.
  • Work in Radiation Areas.
  • Interventions in underground installations.

Global Benefits at CERN

  • A minimum entry-salary of 9113 Swiss Francs per month (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.

Let's get you ready

Be sure to meet the eligibility criteria

  • You are a national of a CERN Member State or Associate Member State.
  • You have relevant qualifications and professional experience.
  • If you have previously held a Staff contract at CERN, you will not be eligible for these positions.
  • Please pay attention to the additional criteria and requirements for this specific position and mentioned above.

You will need these documents to complete your application

  • Your CV (English or French)
  • Any document you consider relevant to your application

Your CERNDepartment

The TE department specializes in maintaining world-class expertise in accelerator technologies, supporting R&D, and managing technical facilities to advance CERN's technological capabilities.

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!


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