The Mechanical and Materials Engineering (EN-MME) group, within the Engineering Department (EN), is seeking a Mechanical Engineer to contribute to the mechanical design, mechanical and thermo-mechanical simulation, and optimisation of CO2 cooling transfer lines as part of the CMS detector upgrade at CERN.

Your responsibilities

• Perform mechanical and thermo-mechanical analyses via finite element tools such as ANSYS, together with structural and thermal calculations in compliance with related standards.
• Prepare comprehensive technical documentation throughout the project lifecycle.
• Participate in iterative design development to meet both performance objectives and integration constraints.
• Collaborate closely with engineers, designers, and technicians across multiple domains, contributing to fabrication-related decisions and supporting quality assurance activities.

More information here.

Your profile

• Previous experience with finite element analysis software for thermal and structural simulations (e.g. ANSYS).
• Familiarity with 3D CAD software (preferably CATIA).
• Familiarity with EN 13480 and other international design and safety standards for pressure vessels and mechanical components would be an advantage.

Skills

• Ability to analyse and interpret mechanical and thermo-mechanical simulation data to guide design decisions.
• Strong problem-solving skills and ability to work independently and in teams.
• Attitude to teamwork in a multidisciplinary environment.
• Excellent communication and documentation skills.
• Spoken and written English, with a commitment to learn French.

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 similar) (or a related field) and your highest educational qualification is either a Bachelor's or Master's degree.
• You have never had a CERN fellow or graduate contract before.
• Applicants without University degree are not eligible.
• Applicants with a PhD are not eligible.

Job closing date: 25.05.2026 at 23:59 CEST.

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

Working hours: 40 hours per week

Job flexibility: Fully Onsite

Target start date: 01-August-2026

Job reference: EN-MME-EM-2026-132-GRAE

Field of work: Mechanical Engineering

Benchmark job: 200090 - Mechanical Engineer

Global Benefits

• A monthly stipend between 5266-5793 Swiss Francs per month (tax free) depending on your degree.
• 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.

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