CERN Position: Applied Physicist – MAPS Detectors (EP-FCC-2025-252-GRAP)

Location: Geneva, ch

Job Description:

Join a team of physicists and engineers working on the development of detector concepts for the FCC-ee physics program. You will be responsible for developing simulation software to model the performance of MAPS sensors, used in the vertex detectors of several detector concepts. You will also contribute to the development of a novel Tracker concept entirely based on MAPS technology.

Your responsibilities

• Develop a detailed simulation of the MAPS response, covering various options for sensor design and readout parameters.
• Evaluate and optimise the performance of a full-MAPS Tracker concept.
• Possibly contribute to the evaluation of MAPS prototypes.

Your profile

• Solid background in experimental particle physics;
• Experience in the development of reconstruction software and data analysis;
• Knowledge of silicon detector technologies;
• Familiarity with Monolithic Active Pixel Sensors (MAPS) would be an asset.

Skills

• Strong programming skills, with proficiency in at least Python and C++.
• 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 Experimental Particle Physics (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: 19.01.2026 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: Hybrid

Target start date: 01-March-2026

This position involves:

• Work in Radiation Areas.

Job reference: EP-FCC-2025-252-GRAP

Field of work: Applied Physics

Benchmark job: 200140 – Applied Physicist

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.

Level of Education: Master Degree

Work Hours: 8

Experience in Months: 24