Silicon Photonics Design & Systems Engineer (EP-ESE-BE-2023-100-GRAP)

  • Full-time

Job Description

Your responsibilities

Are you skilled in Silicon Photonics Device and System Design? We are working on bringing Silicon Photonics technology to the optical data read-out and control systems of the CERN Particle Physics experiments.

You will be part of a small and dynamic team working in the Electronic Systems for Experiments group that is part of CERN's Experimental Physics department. We are working on understanding the tolerance of Silicon Photonics devices and systems to the harsh environment found inside particle physics experiments. Our ultimate goal is to leverage this technology to create the highest performance optical data transmission systems for this environment.

You will contribute by designing and laying-out Silicon Photonics test chips that will contain device building blocks as well as full WDM systems. You will have the opportunity to combine your existing knowledge of Silicon Photonics devices and systems with your design and layout skills and what you will learn about our specific requirements in order to create exciting new applications of this technology. You will propose and implement design solutions to meet requirements. You will evaluate those design solutions with physics-based simulations and detailed comparisons with test data as well as conduct optical experiments to support design efforts. You will layout those designs ready for fabrication and participate in their evaluation once fabricated. There are many challenges and possibilities that are bound to match some of your interests and strengths!

Your profile

Essential skills and experience:

  • Simulation and design of silicon photonics devices such as modulators, photodiodes, fibre couplers, arrayed waveguide gratings, multiplexers, and demultiplexers;
  • Layout of devices and systems with experience of foundry-supplied design kits;
  • Laboratory characterisation of silicon photonics devices and circuits and/or other opto-electronic devices;
  • Passionate about Silicon Photonics technology and eager to learn about our particular application in order to successfully combine the two;
  • You enjoy working in a small team building practical solutions in close collaboration with users and external partners;

Desired skills and experience:

  • Professional experience in one or more of the following would be an asset: working with industry in optical/electronic systems in the tele/datacom and/or aerospace industries; high-frequency design, modelling, and characterisation (e.g. using VNA); high frequency packaging and fibre attachment of silicon photonics devices.

Eligibility criteria:

  • You are a national of a CERN Member or Associate Member State.
  • You have a professional background in Electronic Engineering or Applied Physic (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: 29.09.2023 at 12:00 AM (midnight) CET.

Job reference: EP-ESE-BE-2023-100-GRAP

Contract duration: 24 months, with a possible extension up to 36 months maximum.

Target start date: 01-January-2024


What we offer

  • A monthly stipend ranging between 6194 and 6808 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

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.

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