Scientist - Nuclear Fuel Behavior Analysis and Development

The Paul Scherrer Institute PSI is the largest research institute for natural and engineering sciences within Switzerland. We perform cutting-edge research in the fields of future technologies, energy and climate, health innovation and fundamentals of nature. By performing fundamental and applied research, we work on sustainable solutions for major challenges facing society, science and economy. PSI is committed to the training of future generations.

Therefore, about one quarter of our staff are post-docs, post-graduates or apprentices. Altogether, PSI employs 2300 people.

For the Reactor Physics and Thermal-Hydraulics Laboratory we are looking for a Scientist - Nuclear Fuel Behavior Analysis and Development.

01.05.2026

• Job code:
• Status: 100% position

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• Development of nuclear fuel performance codes, including both established methodologies and high-fidelity approaches
• Modelling and simulation of standard and advanced fuel concepts, covering operational, transient, accident, and storage scenarios
• Verification and validation of models, methods, and computational tools using international benchmark data and post irradiation examinations, and experimental measurements
• Technical support to the regulator through independent assessments and expert review of fuel related safety questions
• Participation in international activities, preparation of research proposals, publication of scientific articles and supervision of students

• PhD degree in nuclear engineering (or related discipline)
• Strong background and interest in nuclear fuel behaviour, fuel performance modelling, and materials under irradiation
• Solid experience with fuel performance codes (e.g., FRAPCON/FRAPTRAN, TRANSURANUS, FALCON, BISON, OFFBEAT etc.)
• Experience with validation, benchmarking, and interpretation of fuel related experimental results
• High proficiency in programming and scripting capabilities
• Good knowledge of numerical methods for scientific computing
• Familiarity with regulator-oriented analysis workflows is a plus

Our institution is based on an interdisciplinary, innovative and dynamic collaboration. You will profit from a systematic training on the job, in addition to personal development possibilities and our pronounced vocational training culture. If you wish to optimally combine work and family life or other personal interests, we are able to support you with our modern employment conditions and the on-site infrastructure.

This is a Tenure Track position. The employment contract will initially be limited to 3 years.

For further information, please contact Dr Alessandro Scolaro, alessandro.scolaro, phone .

Please submit your application online by 20 June 2026 for the position as a Scientist (index no. ).

Paul Scherrer Institut, Human Resources Management, Adrian Kirsch, 5232 Villigen PSI, Switzerland