Fibre Optic Site Engineer (EN-EL-FO-2025-208-GRAP)

Employment Type: Full-time

Great technology needs great people! Join the Fibre Optics Section in the Electrical Engineering Group (EN-EL) and actively participate in the design, preparation, supervision and validation of optical fibre installations. The Engineering Department (EN) pushes forward the limits of technology so that physicists can carry out their research.

The Fibre Optics Section in the Electrical Engineering Group is responsible for the management and operation of the CERN optical fibre network. Its main missions are to operate, maintain, consolidate and upgrade the fibre infrastructure connecting CERN buildings, accelerators equipment and particle detectors.

Your main tasks will be related to HL-LHC project and CERN's Personnel Safety System Consolidation (PSS-CONS) program.

Your responsibilities:

• Establish installation requirements for optical fibres.
• Prepare database registration and technical work files for the contractors.
• Contribute in drafting work planning and follow up with the contractors.
• Organise and manage worksite meetings.
• Verify the quality of the work performed by contractors and validate optical fibre installations.
• Organise and execute fibre patching and optical measurements as required.
• Organise maintenance and repair activities when required.
• Prepare work progress reports.
• Carry out studies on infrastructure consolidation and upgrades.

The candidate will be guided in acquiring knowledge of optical fibre infrastructure and installation technics. The ability of efficiently supporting and integrating with the Section Team will be key in the daily work.

Your profile:

• Proven ability in drawing up technical documentation, including the use of database tools, and reporting.
• Experience in the preparation of work files, as well as in work supervision and acceptance of cabling installations.
• Experience in cable installation would be an asset.

Skills:

• Basic knowledge of fibre optics and their applications.
• Ability to work independently, supervising multiple projects and competing priorities to meet scheduled completion dates.
• Detail-oriented and capable of maintaining thorough technical documentation.
• Willingness to work on optical fibre installations on-site.
• Solving Problems: identifying, defining and assessing problems, taking action to address them.
• Communicating Effectively: demonstrating a pro-active approach to resolving differences, addressing issues of conflict constructively, providing others with timely information.
• Working in Teams: contributing to promoting a positive atmosphere in the team through an optimistic and constructive attitude; addressing issues.
• 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 Electronics / Electrical / Telecom (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: 16.12.2025 at 23:50 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-February-2026

This position involves:

• Work in Radiation Areas.
• Interventions in underground installations.
• Residence in the immediate vicinity of the Organization's installations.
• A valid driving licence.
• Work during nights, Sundays and official holidays, when required by the needs of the Organization.
• Shift work.

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-FO-2025-208-GRAP

Field of work: Electrical or Electronics Engineering

Benchmark job: 200050 - Electronics Engineer

What we offer

• A monthly stipend ranging between 6287 and 6911 Swiss Francs per month (net of tax).
• Coverage by CERN's comprehensive health scheme (for yourself, your spouse and children), and membership of the CERN Pension Fund.
• Depending on your individual circumstances: installation grant; family, child and infant allowances; payment of travel expenses at the beginning and end of contract.
• 30 days of paid leave per year.
• On-the-job and formal training at CERN as well as in-house language courses for English and/or French.

About us
At CERN, the European Organization for Nuclear Research, physicists and engineers are probing the fundamental structure of the universe. Using the world's largest and most complex scientific instruments, they study the basic constituents of matter - fundamental particles that are made to collide together at close to the speed of light. The process gives physicists clues about how particles interact, and provides insights into the fundamental laws of nature. Find out more on http://home.cern.

We are on a Quest. A Journey into discovery like no other. Bring your expertise to our unique work and develop your knowledge and skills at pace. Join world-class subject matter experts on unique projects, in a Quest for greater knowledge and deeper understanding.

Begin your CERN Quest. Take Part!

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.