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Radiation Protection Physicist/Engineer (HSE-RP-AS-2024-72-GRAP)

Geneva, Switzerland
Posting live until
28 Apr 2024

Job Details

Job Description

Your responsibilities

In this role, you will join the Occupational Health & Safety and Environmental Protection (HSE) Unit, more specifically the Accelerators & Sites section of the HSE Radiation Protection (RP) group. The section monitors and enforces compliance with radiation protection regulations and execute projects, studies and services aimed at protecting people and the environment from the ionising radiation generated by CERN's activities. By joining the RP group, you will work in close contact with RP Physicists and RP Engineers in charge of the operational radiation protection of the Proton Synchrotron (PS) complex.

The TCC2/TDC2/TT20 areas within the North Area are of significant radiological concern. To address this issue, a campaign has been initiated by Radiation Protection (RP) to mitigate radiological risks by offering design guidelines for equipment being subject to high beam impacts or undesirable losses.

Your role will be to continue these actions, encompassing the following responsibilities:

  • Categorizing Radiological Criticality of equipment: Assessing the radiological criticality of equipment across the region, spanning from the SPS extraction area to the target areas and beyond.
  • FLUKA Simulations: Establishing FLUKA simulations or adapting existing ones to analyse the present and future radiological impacts resulting from the beam operation of such equipment.
  • ActiWiz Calculations: using fluence input from FLUKA, ActiWiz will be used to improve material compositions in terms of RP aspects.
  • Optimization Studies: Conducting optimization studies on equipment to significantly reduce radiological risks, including residual dose rates and specific activation. This comprises the proper choice of materials used to build the equipment and the use of radiological favourable shielding.
  • Collaborative Improvement Strategies: Collaborating with equipment owners to devise realistic strategies for enhancing future equipment designs, ensuring optimized radiological performance while preserving functionality.
  • Operational RP Support for NA consolidation works: Providing assistance for ad hoc operational RP queries arising from the North Area consolidation project. By executing these tasks, you will play a pivotal role in the radiological improvement of the North Area, with the viewpoint of future increased beam intensities used in these areas.

Your profile

Skills and/or knowledge

  • Experience in radiation protection
  • Monte Carlo simulation codes for particle transport (FLUKA, MCNP, PHITS, etc)
  • Operational RP experience is an asset
  • Programming skills are good to have but not a prerequisite
  • Fluent in English, the ability to work in French would be an advantage

Eligibility criteria:

  • You are a national of a CERN Member or Associate Member State.
  • You have a professional background in Physics or Nuclear Engineering (or a related field) and have either:
    • 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: 21.04.2024 at 23:59 CEST.

Job reference: HSE-RP-AS-2024-72-GRAP

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

Target start date: 01-July-2024

This position requires:

  • Work in Radiation Areas.


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. 

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.


CERN profileAt CERN, physicists and engineers use the world’s largest and most complex scientific instruments to study the basic constituents of matter – the fundamental particles – to probe the underlying structure of the universe.

Working at CERN
CERN is a truly unique organization. A genuine collaboration between countries, universities and scientists, driven not by profit margins, but by a commitment to create and share knowledge. At CERN, students, recent graduates and experienced professionals work together to push for immense scientific discoveries, answering some of life’s most complex questions and advancing the boundaries of human knowledge.

People are free to work creatively and to trust in, and rely on, their colleagues across the organization. History is being made at CERN – 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.

Why work for us
Today, CERN employs more than 2500 people, and if you visit us you will find more than 2500 different reasons why CERN is such a great place to work. Six key reasons that we believe will make you love working here are: challenge; purpose; imagination; integrity; collaboration; and quality of life.

Student and graduate schemes
CERN technical and administrative internships and graduate schemes offer international students and recent graduates the opportunity to work with world-class scientists and engineers on cutting-edge research in particle physics, computational science, life sciences, engineering, international relations, and more. Whichever route you take, it will be an extraordinary experience.

What we are looking for
To conduct experiments of this scale and importance, CERN needs people from various career levels and with a wide range of abilities, skills and competencies. We have job opportunities for students, graduates and experienced professionals, from apprenticeships to PhDs (and beyond). Whatever your background, field of interest or diploma level, CERN could be the place for you.

Geneva, Switzerland

Number of employees
2500+ staff members; several hundred on graduate and student programmes

Positions recently recruited for
Computing engineer, radiofrequency engineer, process operator in cryogenics, web developer, mechanical engineer, administrative assistant, system administrator, power electronics engineer, scientific writer, applied physicist and many more

Desired degree disciplines/class
From apprenticeship to PhD in a wide variety of domains

How to apply
Apply online at

Closing date
All year round

Tel +41 22 76 63 786

Company info
+41 22 76 63 786
Esplanade des Particules 1
PO Box 1211
Geneva 23

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