Mechanical Engineer – CMS Innermost Region, Switzerland

Ideal start date: 01/10/2026
Contract duration (in months): 48
Grade range: 6
Benchmark job: 200090 – Mechanical Engineer
Job flexibility: Fully Onsite
Team supervision

What you’ll do:
You will play a key role in the design, prototyping, construction, and integration of the mechanical structures and services for the innermost region of the CMS detector at CERN. This includes beam-pipe support structures, tracker bulkheads, beam-luminosity and beam-background monitors, and their associated services. The work will culminate in the equipment installation and commissioning at the end of the Long Shutdown 3 of the LHC.

Your responsibilities:
– Prepare 3D models and technical drawings and perform thermo-mechanical analyses of complex mechanical components and assemblies.

– Contribute to component procurement and oversee fabrication of mechanical parts, including related quality assurance.

– Lead and supervise the assembly of mock-ups, prototypes, and final versions of support structures for the CMS innermost region.

– Assist with the integration and testing of the Inner Tracker and Luminosity Monitors at CERN.

– Support and supervise colleagues from collaborating institutes participating in integration activities at CERN.

Your profile:
– Proven experience in design of complex mechanical components and assemblies using 3D CAD tools.

– Experience with structural and thermal simulations using finite-element analysis.

– Experience in construction, assembly, and quality control of mechanical systems.

– Demonstrated ability to work effectively within a multidisciplinary team, establishing and maintaining constructive and effective working relationships with a diverse range of colleagues.

– Master’s Degree or equivalent relevant experience in the field of Mechanical Engineering or a related field.

Your skills:
– Design and analysis of mechanical structures.
– Production of 2D drawings and 3D models.
– Knowledge and application of numerical modelling in solid mechanics.
– Manufacturing of mechanical parts.
– Builds and maintains constructive and effective work relationships.
– Shares knowledge and expertise freely and willingly with others; coaches others to ensure knowledge transfer.
– Creates a common mind-set and promotes team spirit.
– Spoken and written English, with a commitment to learn French.

Employment conditions:
– A valid driving licence.
– Shift work, when required by the needs of the Organization.
– Work in Radiation Areas.
– Interventions in underground installations.
– Work during nights, Sundays and official holidays, when required by the needs of the Organization.

For full job description and application process please visit the following website: https://careers.cern/jobs/mechanical-engineer-cms-innermost-region/