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 Your tasks 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 Your profile 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 (, FRAPCON/FRAPTRAN, TRANSURANUS, FALCON, BISON, OFFBEAT etc.) Experience with validation, benchmarking, and interpretation of fuel related experimental results High proficiency in programming and scrip