Mechanical Engineer - CMS Innermost Region; EP-CMS---LD

Introduction

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 s 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.

• 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.

Master's Degree or equivalent relevant experience in Mechanical Engineering or a related field.

• 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.

• 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.

• Working in Teams: building and maintaining constructive and effective work relationships.
• Learning and Sharing Knowledge: sharing knowledge and expertise freely and willingly with others; coaching others to ensure knowledge transfer.
• Bringing the Best out of People: creating a common mind‑set and promoting team spirit.

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

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 12.08.2026 at 23:59 CEST.

• 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
• Job Flexibility:
  Fully Onsite
• Job grade: 6‑7
• Job reference: EP-CMS---LD
• Field of work:
  Mechanical Engineering
• Benchmark
  
  Job Title:
  
  Mechanical Engineer
• Work in Radiation Areas
• Interventions in underground installations
• A valid driving licence
• Work during nights, Sundays and official holidays, when required by the needs of the Organization
• Shift work, when required by the needs of the Organization

• 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.