Physicist / Radiological Protection Engineer

• 30 October 2026
• 100%
• Indefinite duration
• Villigen PSI

The Paul Scherrer Institute PSI, a leader in natural sciences and technology, is looking for a specialist.

Tasks ##

• Offer expertise in radiation protection for projects.
• Organize and evaluate radiological protection measurement campaigns.
• Develop protection concepts and write technical reports.

Skills ##

• PhD in physics or engineering, or master's with experience.
• Skills in data analysis and programming (C++, Python).
• Knowledge of Monte Carlo radiation transport codes.

The Paul Scherrer Institute PSI is the largest research institute in natural sciences and engineering sciences in Switzerland. We conduct cutting-edge research in the fields of future technologies, energy and climate, health innovation, and the foundations of nature. By conducting fundamental and applied research, we work on sustainable solutions to the great challenges facing society, science, and the economy. PSI is committed to training future generations. Thus, approximately one quarter of our staff consists of post-docs, doctoral students, or apprentices. In total, PSI employs 2300 people.

For the decommissioning study group within the Department of Radiological Safety and Security, we are looking for a

Your tasks

• Provide expertise in radiological protection and technical supervision for projects, with a particular focus on the development of the TATTOOS radioisotope production facility as part of PSI's large IMPACT project
• Organize, implement, and evaluate radiological protection measurement campaigns at PSI, mainly within the framework of the IMPACT project, including the analysis and interpretation of experimental data
• Develop radiological protection concepts and ionizing radiation measurement methods (for example, for clearance measurements, decommissioning activities, and radioactive material characterization) and prepare expertise reports (if necessary, with the help of Monte Carlo simulations) according to the needs of the group and the section
• Support the planning and implementation of decommissioning activities for former research reactors, including the optimization of clearance measurements through automation and software development
• Prepare authorization and clearance requests for regulatory authorities
• Write your work in the form of clear technical reports, quality management documents, and scientific publications
• Share your results with the scientific community by presenting studies and results at national and international conferences

Your profile

• PhD in physics or engineering, or master's with equivalent research experience
• Solid expertise in radiation physics, protection, and measurement technology. Practical experience with measurement campaigns and experiments on particle accelerators and/or radioisotope production facilities is an asset. Experience with methods and technologies for the decommissioning of nuclear facilities is also an advantage
• Excellent command of English (oral and written) and good knowledge of German. Alternatively, a strong commitment to learning German quickly
• Strong skills in data analysis, data visualization, and programming (e.g., C++, Python)
• Knowledge of one or more major Monte Carlo radiation transport codes (FLUKA, Geant4, MCNP)

We offer

Our institution is based on interdisciplinary, innovative, and dynamic collaboration. You will benefit from systematic field training, in addition to opportunities for personal development and our pronounced culture of professional training. If you wish to best balance work and family life or other personal interests, we can support you through our modern employment conditions and on-site infrastructure.

This is a fixed-term project position. The employment contract is limited to three years.

For more information, please contact Dr. Matteo Bolzonella, telephone +41 56 310 41 02.

Please submit your application online before 4 January 2027 for the position of Physicist / Radiological Protection Engineer (ref. 9624-30258).

Paul Scherrer Institute, People & Culture, Luca Simen, 5232 Villigen PSI, Switzerland

www.psi.ch