The SY-STI-BDE Section oversees the conceptual design, construction, operation, and maintenance of beam-intercepting devices across the CERN's accelerator complex. The beam intercepting devices are precision mechanical equipment working in harsh environments that must be very reliable to guarantee the operation of CERN accelerators.

Are you passionate about mechanical engineering and skilled at multitasking? Join us and become part of a multidisciplinary team responsible for the design, assembly, installation, and maintenance of beam-intercepting devices. You will support safety-critical systems and an efficient operation of CERN's accelerators.

Your responsibilities

• Participate in the purchase, storage and shipment of raw material and components.
• Handle the conditioning of several components to be compliant with the Ultra-High Vacuum (UHV) requirements of collimators.
• Perform the machining of simple parts based on drawings produced with CAD programs.
• Be active on the assembly of collimators and several sub-components and its auxiliary systems.
• Participate in the assembly of the HL-LHC beam dump systems.
• Keep track and maintain all related documents and databases.
• Take an active role in the installation, commissioning and maintenance of the equipment.
• Manage the appropriate disposal/storage of radioactive parts and equipment withdrawn from the facility.
• Provide mechanical and logistics support.
• Contribute to mechanical support activities around different facilities at CERN.

Your profile

• Assembling and testing precision mechanics.
• Knowledge in designing mechanical components.

Skills

• Knowledge of CAD systems, 3D and 2D drawing.
• Good communication.
• Well-organised.
• Accountability.
• Working in a team, as well as independently
• Spoken and written English or French, with a commitment to learn the other language.

Eligibility criteria:

• You are a national of a CERN Member or Associate Member State.
• By the application deadline, you have a maximum of two years of professional experience since graduation in Mechanical Engineering (or a related field) and your highest educational qualification is a general secondary education diploma.
• You have never had a CERN fellow or graduate contract before.
• Applicants with a Bachelor's, Master's or PhD degree are not eligible.

Job closing date: 03.08.2026 at 23:59 CEST.

Contract duration: 24 months, with a possible extension up to 36 months maximum.

Job flexibility: Fully Onsite

Target start date: 01-October-2026

This position involves:

• Work in Radiation Areas.
• Interventions in underground installations.
• A valid driving licence.
• Use of certain mobile work equipment or equipment used for lifting loads (lifting equipment, bridge cranes, aerial work platforms, etc.) requiring a driving authorisation.

Given the occupational health risks associated with this position, the selected candidate must obtain medical clearance before a contract offer is confirmed.

Job reference: SY-STI-BDE-2026-181-GRAE

Field of work: Mechanical Engineering

Benchmark job: 300090 - Mechanical Technician

Global Benefits

• A monthly stipend of 4687 Swiss Francs per month (tax free).
• 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 and travel expenses) depending on your individual circumstances.
• Possibility to extend your contract up to 36 months.
• On-the-job and formal training including language classes.

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

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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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