Neutronics Engineer

About the Position

Neutronics Engineer

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.

Responsibilities

• Perform neutronics analysis using OpenMC and DAGMC for a range of neutron and photon responses important for stellarator optimization and design.
• Contribute to the integration of neutronics analysis into automated pipelines, including programming in Python (essential skill), using version control (Git/Graphite) within a Docker environment. Programming in C++ is considered a benefit.
• Perform verification and validation by comparing simulation results obtained with OpenMC to other codes and experimental data.
• Construct simulation ready CAD with CadQuery and CSG geometries of the stellarator and surrounding facility.
• In addition to developing in-house neutronics workflows, you may have opportunities to contribute to open-source codes we depend on for nuclear data processing, CAD conversion / meshing, and particle transport simulations.

Requirements

• A PhD or Master’s degree in nuclear physics, nuclear engineering, or equivalent experience.
• Experience in processing nuclear data.
• Experience with the main codes that we use (OpenMC, DAGMC, CadQuery, Gmsh) for neutronics analysis.
• Experience designing neutron and gamma shielding.
• Experienced Python programmer using software development tools such as Git.
• Experience with computation in cloud or HPC environments involving numerical simulations (desirable).

Nice to Have

• Experience with CadQuery and Gmsh.
• Experience with cloud or HPC environments.

We Offer

• Opportunity to shape the architecture of the world’s first commercial fusion power plant.
• Solve some of the most complex engineering challenges.
• Design real hardware with a pragmatic, fast-moving team from all over the world.
• Work in an integrated design effort including machine learning experts, software engineers, fusion scientists, and fusion engineers.

About the Company

At Proxima Fusion, our mission is bold: making limitless clean energy a reality. To get there, we need a high-performing, diverse team that brings different perspectives, challenges assumptions, and builds together with purpose. We know that diversity of thought and experience leads to better ideas, stronger execution, and a more resilient team. We don’t look at how you identify, what you look like, who you choose to worship or what ethnicity you are. We care about what you can bring to the table.

Location: Munich, Germany

Employment Type: Full time

Workplace Type: On-site

Interview Process:

• Recruiter Interview (30-60 min)
• Technical Screening (30 min)
• Technical Panel (3x60 min)
• CEO call (30 min)

This role sits at L2/L3 of our framework, please inquire during the recruitment process for further information