Mechanical Technician for Cooling System (EP-ATL-PO-2026-152-GRAE)

Job Description

The EP-ATL-PO section is preparing for the technical challenges of Long Shutdown 3 (2026-2030). During this period, the ATLAS detector will be upgraded with new detector systems requiring active cold and warm cooling, with cooling capacities ranging from several to several hundred kilowatts.

As an Electromechanical Technician with initial experience in cooling systems and/or fluidic pipe assemblies, you will contribute to the installation, testing, commissioning, and operation of complex cooling systems using water, CO2, nitrogen, and process gases. You will work in the highly constrained and demanding environment of the detector.

Your responsibilities

• Removing and disassembling cooling systems and components.
• Manufacturing, testing, and installing piping and manifold boxes.
• Performing maintenance, repairs, testing, and modifications on major cooling systems and equipment.
• Troubleshooting issues and developing repair solutions.
• Ensuring that all necessary safety measures are implemented on work sites.
• Preparing and carrying out acceptance tests.

Your profile

• Initial experience in piping system assembly.
• Basic knowledge of cooling equipment.
• Some experience in metalwork and basic machining.
• Initial experience with electrical wiring and system connections is considered a plus.
• Experience in the manufacturing of mechanical parts is considered a plus.

Skills

• Familiarity with assembling mechanical structures and equipment.
• Basic knowledge of construction or maintenance of cooling systems and piping networks.
• Ability to understand Piping and Instrumentation Diagrams.
• Flexibility, teamwork, and continuous learning mindset.
• 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 Electromechanical 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.

Additional Information

Job closing date: 19.06.2026 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

This position involves:

• Work in Radiation Areas.
• Interventions in underground installations.
• Residence in the immediate vicinity of the Organization's installations.
• Work during nights, Sundays and official holidays, when required by the needs of the Organization.
• Exposure to risk of falling from heights during scaffolding assembly and dismantling operations.

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

Job reference: EP-ATL-PO-2026-152-GRAE

Field of work: Mechanical Engineering

Benchmark job: 300050 - Electromechanical 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!

At CERN, the European Organization for Nuclear Research, we are pushing the frontiers of science and technology. Our groundbreaking work brings together not only physicists but also a diverse range of professionals from engineering, technical, scientific, and administrative fields. Together, we foster an environment where innovation and collaboration thrive.

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!

More information about us, here: careers.cern