Its big its loud its cold and its 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 is 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.
Functions
* Design cryogenic equipment and oversee its construction in close collaboration with external suppliers and internal partners. Manage the associated technical documentation.
* Organise the installation of complex cryogenic equipment, prepare and manage the corresponding quality controls and documentation.
* Contribute to project management activities and quality assurance.
* Manage components procurement and production follow‑up.
* Collaborate with people and services inside and outside the Organization.
Qualifications
Masters degree or PhD or equivalent relevant experience in the field of mechanical engineering or a related field.
Experience
* Demonstrated experience in the mechanical design of industrial equipment, preferably including pressure equipment.
* Contribute 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.
* 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 skills, including knowledge of tools and methods.
* Achieving results: being rigorous and producing quality results on the first attempt; having a structured and organised approach to work; being able to set priorities and plan tasks with results in mind.
* Learning and sharing knowledge: sharing knowledge and expertise freely and willingly with others; coaching others to ensure knowledge transfer.
* Solving problems: identifying, defining and assessing problems and taking action to address them.
* Managing self: working well autonomously; taking on activities and tasks without prompting; taking initiative beyond regular tasks and making things happen.
* Working in teams: seeking to help other team members when own work is done; supporting others; working well in groups and readily fitting into a team; participating fully and taking an active role in team activities.
Additional Information
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 14.01.2026 at 23:59 CEST.
Employment Conditions
* Contract type: Limited duration contract (4 years). Subject to certain conditions, holders of limited‑duration contracts may apply for an indefinite position.
* Working Hours: 40 hours per week
* This position involves:
o Work in radiation areas.
o Interventions in underground installations.
o A valid driving licence.
o Work during nights, Sundays and official holidays when required by the needs of the Organization.
o Stand‑by duty when required by the needs of the Organisation.
o Exposure to ionising radiation (category A).
o Operations on electrical installations or in their vicinity (over 1000 V AC or 1500 V DC) requiring specific authorisation.
o 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: TE‑CRG‑MELD
* Benchmark Job Title: Mechanical Engineer
Global Benefits
* A competitive tax‑free salary 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, 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 and eligibility for an indefinite contract tenure.
Remote Work: No
Employment Type: Contract
Key Skills: Mechanical Design, System Design, FEA, ASME Codes & Standards, CAD, Mechanical Knowledge, Creo, SolidWorks, Mechanical Engineering, AutoCAD, HVAC Design, Autodesk Inventor
Experience: years
Vacancy: 1
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