Junior Commissioning Engineer Switzerland, Geneva, Switzerland (EN-EL-MO-2026-50-GRAE)

What you will do

Join CERN’s Electrical Engineering group in a role suited to an early career electrical engineer seeking hands on experience with High Voltage and Low Voltage power systems, including testing, validation and commissioning. You will contribute to the deployment of electrical installations across CERN while developing your expertise in a world class technical environment.

Your responsibilities

• Lead or contribute to commissioning activities for HV and LV switchgears, transformers, circuit breakers, UPS systems, 48 V DC systems and protection relays.
• Prepare commissioning procedures, test plans and risk assessments.
• Perform advanced commissioning tests, including protection relay secondary injection, logic validation, SCADA communication and interlocking functionality.
• Identify and resolve issues during commissioning and define corrective actions.
• Coordinate activities with project teams, operations teams and external suppliers.
• Produce clear commissioning reports and ensure proper integration into CERN documentation systems.

Your profile

• Your studies focused on Electrical Engineering, Power Systems or related technical field.

Your skills

• Basic knowledge of power system equipment and electrical protection principles.
• Motivated to learn commissioning practices in HV/LV environments.
• Strong analytical mindset, communication skills and willingness to work in field environments.
• Spoken and written English, with a commitment to learn French.

Ideal start date: 01/06/2026
Contract duration: 24 month contract
Job flexibility: Fully Onsite

Medical hazard

• 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 confirme

Employment conditions

• A valid driving licence.
• Work during nights, Sundays and official holidays.
• Work in Radiation Areas.
• Interventions in underground installations.
• Stand-by duty, when required by the needs of the Organization.
• Work during nights, Sundays and official holidays, when required by the needs of the Organization.

Be sure to meet the eligibility criteria

• You are a national of a CERN Member State or Associate Member State.
• By the application deadline, you have a maximum of 2 years of professional experience since graduation in the respective field and your highest educational qualification is either a bachelor’s or master’s degree. You must have a university degree and can’t hold a PhD.
• You have never had a CERN fellow or graduate contract before.
• Please pay attention to the additional criteria and requirements for this specific position and mentioned above.

You will need these documents to complete your application

• Your CV (English or French)
• A copy of your most relevant diploma or a certificate of achievement from your school (if you don't yet have your paper diploma)

Your CERN Department

The EN department provides CERN with the engineering competences, infrastructure systems, and technical coordination required for the design, fabrication, installation, operation, maintenance, and dismantling of the accelerator complex and experimental facilities. Its mission is to deliver and sustain robust infrastructure systems, advanced engineering solutions, and technical coordination.

Ready to apply?

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How to apply?

See the vacancy here and apply online:

https://careers.cern/jobs/junior-commissioning-engineer/

Apply before 10.03.2026. at 23:59 (Geneva Time)



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 vacancies in Cern on https://careers.cern/



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