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Fibre Optics Engineer

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Job Details

Fibre Optics Engineer (EN-EL-FC-2021-55-LD)

Geneva, Switzerland Contract

Company Description

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

Job Description


The Engineering Department (EN) pushes back the limits of technology so that physicists can carry out their research. Within the Electrical Engineering Group (EL) of the EN department, you will join the Fibre Optics and Cabling Section (FC), which is in charge of CERN's optical fibre infrastructure. The section ensures the technical expertise in the field of fibre optics, and provides optical and copper signal cables, standardised racks and DC power cables for magnets in the accelerators and experimental areas. In addition, the Section provides engineering support to the CERN users, centralises their cabling requests and organises the installation activities through external industrial-support contractors.

Are you an expert in the domain of fibre optics technology, who is ready to take on challenging installation projects whilst bringing innovation to the development of technologies? Are you willing to contribute to the continuous extension, consolidation, and maintenance of CERN’s optical fibre network constituting the infrastructure for the major communication systems of the various accelerators, including CERN’s current leading project: the High-Luminosity Large Hadron Collider (HL-LHC). Take part!


As a Fibre Optics Engineer, you will:

  • Provide expertise and ensure the development of fibre optics technology for CERN applications, including both communication and sensing systems.
  • Qualify and procure cutting-edge optical fibre types and components, including radiation sensing optical fibres.
  • Draw up technical specifications and manage industrial supply contracts.
  • Perform engineering studies of the optical fibre network in view of improving its reliability and availability.
  • Provide engineering advice to stakeholders for passing their systems from copper cabling to optical fibres.
  • Define optical cabling components, installation methodologies, testing procedures, and organize optical fibre cabling installation campaigns.
  • Provide data analysis, statistics, project forecasts and financial plans.


Master's degree or PhD or equivalent relevant experience in the field of Photonics or Electronics Engineering or a related field.


The experience required for this post is:

  • Demonstrated experience in the field of optical fibre transmission, optoelectronics components and fibre qualification tests;
  • Demonstrated knowledge and experience in using optical measurement equipment;
  • Demonstrated experience in writing technical specifications and scientific publications;
  • Ability to deal with contractors and sub-contractors would be an asset;
  • Demonstrated experience in optical fibres radiation sensors would be an asset.

Technical competencies:

  • Knowledge and application of optical fibres: signal transmission, sensing, optoelectronics components;
  • Testing and measurement of optical fibres;
  • Design and development of optical data links down to their deployment;
  • Knowledge of programming techniques and languages (data analysis software).

Behavioural competencies:

  • Managing Self: taking initiative beyond regular tasks and making things happen;
  • Achieving Results: driving work / projects along and seeing them through to their conclusion;
  • Solving Problems: anticipating obstacles; assessing alternative solutions in order to have a fall-back plan;
  • Working in Teams: understanding when teamwork is required to achieve the best results;
  • Communicating Effectively: listening actively to others and letting others speak; Checking to ensure that the message has been well understood.

Language skills:

  • Spoken and written English: ability to understand and speak the other language in professional contexts. Ability to draw-up technical specifications and/or scientific reports and to make oral presentations.
  • Spoken French: ability to understand and entertain basic conversations.

Additional Information

Eligibility and closing date:

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. We welcome applications from all Member States and Associate Member States.

This vacancy will be filled as soon as possible, and applications should normally reach us no later than 01.07.2021 at 12:00 pm CET (midday).

Employment Conditions

Contract type: Limited duration contract (5 years). Subject to certain conditions, holders of limited-duration contracts may apply for an indefinite position.

These functions require:

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

Job grade: 6-7

Job reference: EN-EL-FC-2021-55-LD

Benchmark Job Title: Electronics Engineer


Imagine taking part in the largest scientific experiment in the world. CERN needs more than physicists and engineers – if you’re a student, a graduate, just starting your career or an experienced professional, Whatever your field of expertise, CERN could be your next opportunity: take part!

CERN is a truly unique organisation. A genuine collaboration between countries, universities and scientists, driven not by profit margins, but by a commitment to create and share knowledge.

People here are part of immense scientific discoveries, answering some of life’s most complex questions and pushing the boundaries of understanding. Experts from every field come here to share in this ambition and the nature of this collaborative, international community creates a genuine atmosphere of trust. People are free to work creatively and to trust in, and rely on, their colleagues across the organisation.

History’s being made here – and the excitement is tangible, inspiring, overwhelming at times. It is the only place in the world that you can do this work in this way.

CERN. Take part.

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