Commissioning Engineer (EN-EL-MO-2026-30-GRAP)

Job Description

Join CERN's Electrical Engineering team to support the operation and commissioning of its electrical transmission and distribution network. We are looking for a motivated electrical engineer with experience in power system testing and commissioning, and solid knowledge of High Voltage and Low Voltage installations and protection systems. You will play a key role in delivering new and upgraded infrastructure during CERN's Long Shutdown 3 and beyond.

Your responsibilities

• Lead or co-lead commissioning of HV and LV electrical systems including switchgears, transformers, circuit breakers, UPS, 48 V DC systems and protection relays.
• Develop commissioning procedures, test plans and risk assessments.
• Execute advanced commissioning tests covering protection logic, SCADA communication and interlocking functions.
• Diagnose commissioning issues and implement corrective actions.
• Coordinate with project teams, operations and external suppliers.
• Produce commissioning reports and maintain CERN documentation.
• Support operational activities, including periodic network testing when required.
• This role includes team supervision responsibilities.

Your profile

• Proven experience in Electrical Engineering, Power Systems, Protection and Control, or Commissioning.
• Hands-on experience with HV/LV equipment, protection relays and power system operation.
• Practical experience in testing or commissioning electrical systems is an asset.

Skills

• Operation and maintenance of electrical circuits and networks.
• Construction, test and commissioning of electrical circuits and networks.
• Organisation, planning and control, including supervision of works.
• Ability to work independently and manage commissioning tasks within project frameworks.
• Strong problem-solving skills, communication abilities and field-work readiness.
• Spoken and written English, with a commitment to learn French.

Eligibility criteria:

• You are a national of a CERN Member or Associate Member State .
• You have a professional background in Electrical Engineering (or a related field) and have either:
  • a Master's degree with 2 to 6 years of post-graduation professional experience;
  • or a PhD with no more than 3 years of post-graduation professional experience.
• You have never had a CERN fellow or graduate contract before.

Additional Information

Job closing date: 10.03.2026 at 23:59 CET.

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-April-2026

This position involves:

• Work during nights, Sundays and official holidays.
• Work in Radiation Areas.
• Interventions in underground installations.
• A valid driving licence.
• Stand-by duty, and work during nights, Sundays and official holidays, when required by the needs of the Organisation.
• Exposure to electromagnetic fields under certain exposure conditions.

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

Job reference: EN-EL-MO-2026-30-GRAP

Field of work: Electrical or Electronics Engineering

Benchmark job: 301140 - Electrical Technical Engineer

Global Benefits

• A monthly stipend between 6372-7004 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.

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