RICH Detector Development Physicist

What you'll do

As an applied physicist, you will be part of the RICH Detector strategic R&D activities and the LHCb RICH Upgrade project. This includes studies of novel single-photon detectors such as SiPMs (Silicon Photomultipliers) at cryogenic temperatures, calibrations of readout electronics in the sub-100 ps time domain and measurements of prototype optics for RICH detectors. Your work will combine hands-on activities (beam tests and measurements in the laboratory using picosecond pulsed laser illumination) with analysis of the performance of prototypes, simulation and the development of new detector designs and solutions.

Your responsibilities

Actively participate in the LHCb RICH commissioning and electronics calibrations for the detector upgrade during LS3.
Lead the qualification of prototype optics and RICH mirrors for future detector upgrades.
Collaborate during beam tests and laboratory characterisation of single-photon detector prototypes, including data analysis.
Engage with the module integration studies and system tests of SiPM sensors at cryogenic temperatures.

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Your profile

Demonstrated experience in applied physics.
Proven understanding of HEP experiments and RICH detector designs.
Experience in RICH detector tests (in laboratory and in test beams).
Familiarity with readout electronics, DAQ systems and laboratory infrastructure.
Proficiency in scientific writing and oral presentations.
Your studies focused on Physics.

Your skills

Strong analytical and problem-solving skills.
Ability to work both autonomously and collaboratively in an international research environment.
Extensive knowledge of laboratory equipment and techniques for single-photon detector measurements.
Reliable, well-organised, and proactive approach to experimental work and calibration data analyses.
Proficiency in programming languages such as C++, Python, and ROOT.
Spoken and written English, with a commitment to learn French.

Ideal start date: 01/07/2026

Contract duration (in months): 24

Job flexibility: Fully Onsite

Medical hazard

Shift work

Given the occupational health risks associated with this position, the selected candidate must obtain medical clearance before a contract offer is confirmed.

Employment conditions

Stand-by duty, and work during nights, Sundays and official holidays, when required by the needs of the Organisation.
Interventions in underground installations.
Work in Radiation Areas.

Global Benefits at CERN

A monthly stipend between 6372-7004 Swiss Francs per month (tax free) depending on your degree.
30 days of paid leave per year plus 2 weeks annual closure.
Coverage by CERN’s comprehensive health insurance scheme (for yourself, your spouse and children), and membership of the CERN Pension Fund.
Family, child and infant monthly allowances depending on your individual circumstances.
A relocation package (installation grant and travel expenses) depending on your individual circumstances.
Possibility to extend your contract up to 36 months.
On-the-job and formal training including language classes.

Let's get you ready

Be sure to meet the eligibility criteria

You are a national of a CERN Member State or Associate Member State. Currently, we cannot consider applications from Pakistani and Lithuanian nationals for positions with a 2026 start date, as the ceiling defined under Article II.5 of the Associate Membership Agreement has been reached.
By the application deadline, you have a master’s degree with 2 to 6 years of professional experience since graduation or a PhD with a maximum of 3 years of professional experience since graduation. You are not eligible with only a bachelor’s degree.
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)
Any document you consider relevant to your application

Your CERNDepartment

The EP department conducts research in experimental particle physics in close collaboration with and supporting the wider scientific community working at CERN. This includes designing and operating experiments, developing and constructing detectors, acquiring and analysing physics data.

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!

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Still have a doubt ? Here are the most frequently asked questions

What should I expect during my first week at CERN?

Your onboarding at CERN includes a comprehensive induction programme, which starts with an official welcome session at the beginning of each month. In addition, you will receive important information both before and after your arrival to ensure a smooth transition into your new role. This process is designed to help you get acquainted with CERN’s environment, your team, and the tools and systems you’ll be using.
How big would the team be?

The size of the team you'll be working with at CERN depends on the specific role and department. Some teams are small and highly specialized, while others are larger and more interdisciplinary. During the interview process, you'll have the opportunity to learn more about the team structure for the position you are applying for.
What is the working language at CERN?

The working languages at CERN are English and French. However, it is not always mandatory to speak both languages to work at CERN. We offer language training to help you acquiring the other language.
What support does CERN provide for relocation?

CERN does not offer direct assistance with relocation. However, depending on your role and specific criteria, you may be eligible for certain benefits such as an installation allowance and coverage of travel expenses to join CERN. These benefits are designed to help ease the transition when relocating to the Geneva area. For more information, please consult the “Salary, Benefits and Support“ page.
Do I need a visa to work at CERN?

Whether you need a visa to work at CERN depends on your nationality and the duration of your stay. CERN assists with the necessary visa and work permit processes for its employees and visitors. The specific requirements will be communicated to you during the recruitment process.
What would my salary be?

Salaries at CERN are determined by a structured scale. Salaries are based on your role, qualifications, and experience, and are not subject to negotiation. Specific details will be provided as your application progresses. For more information, please refer to the dedicated page.