myScience
Lausanne
7 hours ago
Postdoctoral Fellow in Multiphysics Modelling for Advanced Nuclear Systems
- 30 January 2026
- 100%
- Lausanne
About the job
Postdoctoral Fellow in Multiphysics Modelling for Advanced Nuclear Systems
Workplace Lausanne - Lake Geneva region - Switzerland CategoryResearch Management | Physics
Position Senior Scientist / Postdoc
Published 29 January 2026 EPFL, the Swiss Federal Institute of Technology in Lausanne, is one of the most dynamic university campuses in Europe and ranks among the top 20 universities worldwide. The EPFL employs more than 6,500 people supporting the three main missions of the institutions: education, research and innovation. The EPFL campus offers an exceptional working environment at the heart of a community of more than 18,500 people, including over 14,000 students and 4,000 researchers from more than 120 different countries.
You will work with two cutting-edge open-source multi-physics simulation tools developed at LRS:
A strong emphasis will be placed on close collaboration with the Paul Scherrer Institute (PSI), where key developers of these tools are now based. You will contribute to software development, modelling improvements, and high-impact simulation studies targeting Sodium Fast Reactors (SFR), High Temperature Gas-cooled Reactors (HTGR) and breeding blanket concepts in Fusion Reactors.
Beyond research, you will actively contribute to the lab’s academic mission through PhD supervision, Master-level teaching, and support to major European research activities and proposal writing.
Master and/or PhD in Nuclear Engineering will be considered as a plus. Fluency in English, both written and oral, is compulsory.
A brief cover letter (pdf, up to 2 pages).
And in one PDF:
A CV with a publication list.
A research statement (pdf, up to 3 pages).
Contact details for 3 referees.
For any further information, please contact: Mathieu Hursin (mathieu.hursin@ epfl.ch)
Contract Start Date : 03/01/2026
Activity Rate : 100.00
Contract Type: CDD
Duration: 1 year contract, renewable up to 4 years
Reference: 2030
Mission
Join the Laboratory for Reactor Physics and Systems Behaviour (LRS) at EPFL for an exciting postdoctoral project focused on advanced nuclear energy systems modelling, with applications to next-generation fission reactors and potentially fusion-related systems.You will work with two cutting-edge open-source multi-physics simulation tools developed at LRS:
- GeN-FOAM (system and reactor multi-physics)
- OFFBEAT (fuel behaviour and performance)
A strong emphasis will be placed on close collaboration with the Paul Scherrer Institute (PSI), where key developers of these tools are now based. You will contribute to software development, modelling improvements, and high-impact simulation studies targeting Sodium Fast Reactors (SFR), High Temperature Gas-cooled Reactors (HTGR) and breeding blanket concepts in Fusion Reactors.
Beyond research, you will actively contribute to the lab’s academic mission through PhD supervision, Master-level teaching, and support to major European research activities and proposal writing.
Main duties and responsibilities
In this postdoctoral role, you will:- Perform multi-physics simulations of advanced fission reactor concepts (SFR and HTGR) using GeN-FOAM and OFFBEAT
- Contribute to the development, verification, and validation of open-source modelling tools
- Support modelling work related to fuel performance and behaviour for advanced reactor systems
- Support modelling work related to breeding blanket modelling in fusion systems
- Participate in the supervision of 4-5 PhD candidates working on advanced reactor modelling and fuel-related topics
- Contribute to the teaching of Master-level courses in the area of nuclear engineering and simulation
- Support LRS activities within major EURATOM projects, including: TRANSPARANT, EVEREST, OperaHPC, ESFR-SIMPLE
- Assist with the preparation of new research proposals to secure further modelling-related funding
Profile
Candidates will have to hold a PhD in STEM and will have a background in the modelling and simulation.Master and/or PhD in Nuclear Engineering will be considered as a plus. Fluency in English, both written and oral, is compulsory.
We offer
EPFL offers internationally competitive salaries (min. 88’000 CHF/year), generous research support and outstanding research infrastructure. Academics in Switzerland enjoy many research funding opportunities, as well as an exceptionally high standard of living. Collaboration with PSI will offer additional access to unique, world-class expertise in the field of Nuclear Science and Engineering.Informations
Only applications submitted through the online platform are considered. You are asked to supply:A brief cover letter (pdf, up to 2 pages).
And in one PDF:
A CV with a publication list.
A research statement (pdf, up to 3 pages).
Contact details for 3 referees.
For any further information, please contact: Mathieu Hursin (mathieu.hursin@ epfl.ch)
Contract Start Date : 03/01/2026
Activity Rate : 100.00
Contract Type: CDD
Duration: 1 year contract, renewable up to 4 years
Reference: 2030
In your application, please refer to myScience.ch and referenceJobID69169.
