Postdoc in Nuclear Fuel Materials (Uranium Nitride Fission Product Kinetics) at KTH

Job Description

KTH’s Nuclear Science and Engineering division in the Department of Physics is hiring a postdoc in nuclear fuel materials to study how fission products move in uranium nitride, an advanced nuclear fuel, using ion implantation. You will lead experimental and computational work on fission product diffusion and on how the high burnup structure forms in uranium nitride. The project is supported by the Swedish Radiation Safety Authority and run with Westinghouse and Uppsala University.

At a glance

• Position: Postdoctoral fellow (1 post), up to two years
• Where: Nuclear Science and Engineering, Department of Physics, KTH Stockholm
• Contacts: Faris Sweidan, sweidan@kth.se; Pär Olsson, polsson@kth.se; Jens H Bardarson, bardarson@kth.se
• Reference: PA-2026-2586
• Apply by: 1 October 2026
• Apply: 1 October 2026 (midnight CET/CEST)

About the nuclear fuel materials postdoc

• Study fission product kinetics in uranium nitride using ion implantation
• Evaluate fission product diffusion and the formation of the high burnup structure with experiments and modelling
• Lead research within the nuclear fuel materials team
• Work with Westinghouse, Uppsala University and the Swedish Radiation Safety Authority

What to include in your application

KTH asks for a CV with relevant professional experience, copies of your diplomas and grades (with English or Swedish translations if needed), names and contact details of two or three referees (with letters of support if you have them), and a statement of at most two pages on why you want to do research and how it relates to your studies and goals. Applications go through KTH’s recruitment system and must arrive by midnight CET/CEST on the closing date.

What KTH is looking for

• A doctoral degree or equivalent by the employment decision
• A PhD in nuclear engineering, materials science, engineering mechanics or a similar field

Nice to have

• A PhD obtained within three years of the deadline
• Hands-on lab work in sintering, powder metallurgy and characterisation
• Mesoscale and multiphysics finite element modelling
• Good English, teamwork and independence; teaching experience is an advantage

Pay and location

KTH’s advert lists a monthly salary but no amount. The post is full time in Stockholm for at most two years, starting by agreement.

How to apply

Apply through the official KTH page. The closing date is 1 October 2026 (midnight CET/CEST).

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