Neutronics Engineer
Posted 6 Jan 2026
BranchFactor Summary
The original posting with the fluff stripped out
- Management level
- Individual contributor
- Employment
- On-Site
- Contract
- Full-time
No salary listed for this role.
Field of studyNuclear Engineering, Nuclear Physics (or related)
Study levelMaster's or higher
WHO WE ARE
Proxima Fusion is Europe’s fastest-growing fusion company and the continent’s best-funded fusion player, as well as the first spin-out from the Max Planck Institute for Plasma Physics (IPP). Backed by over €650M and powered by a growing team across Munich, Zurich, and Oxford, we are developing the hardware and infrastructure needed to deliver the world’s first commercial stellarator fusion power plant.
Our concept advances the most mature fusion technology out there, the Wendelstein 7-X stellarator, through two next-generation machines: Alpha and Stellaris. Our work combines stellarator optimization, advanced computation, machine learning, and high-temperature superconducting magnets to unlock higher-performance designs that were previously out of reach.
Turning these designs into a functioning fusion power plant requires excellence and ownership across every discipline, from physics and engineering to software, manufacturing, law, and business functions.
BY JOINING OUR TEAM YOU’LL GET TO
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Shape the architecture of the world’s first commercial fusion power plant – Own system-level decisions that determine how a first-of-a-kind energy technology is designed, integrated, and ultimately deployed at scale.
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Solve some of the most complex engineering challenges – Work across tightly coupled disciplines (plasma physics, magnets, cryogenics, manufacturing, controls, and more) to resolve critical trade-offs and turn cutting-edge science into a functioning product.
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Design real hardware with a pragmatic, fast-moving team from all over the world – Combine advanced simulation and systems thinking with a strong execution mindset, focusing on practical engineering solutions that accelerate the path to commercial fusion energy.
YOUR IMPACT
As a member of the neutronics group you will play a critical role in advancing our stellarator design.
Your work will focus on analysis required for licensing and operational safety of the Alpha stellarator.
You will carry out reproducible neutronics simulations and automate neutronics simulation workflows. Simulations include producing shutdown dose rate maps, unstructured mesh magnet heating, tritium breeding, DPA, activation, using both CSG and CAD-based neutronics models.
The role provides a unique opportunity to work as part of an integrated design effort including machine learning experts, software engineers, fusion scientists, and fusion engineers, making a tangible impact on the future of clean energy.