Senior Simulation Engineer, Computational Physics

Proxima Fusion GmbH
Munich, DEOn-site

About the Role

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.

Your Impact

Alpha will be the first stellarator to demonstrate net energy. Achieving this milestone requires building a deeply coupled machine, where plasma, magnets, structures, cryogenics, and heating work at the edge of each discipline's capability. You will own a selected set of the models, stretching over domains, e.g. microwave physics to plasma radiation, used by the design team to compute load cases, assess system-level tradeoffs, and simulate the whole machine as a single system.

What You Will Do

  • Identify and implement the simulators, whether from scratch or wrapping an existing tool into the platform
  • Co-define the input and output interfaces with engineering teams to ensure the data model captures the relevant design specifications
  • Ensure correctness: simulation pipelines are tested, verified, validated and work correctly as the design evolves
  • Exercise the models: support the integrated design team with dedicated studies to inform design tradeoffs
  • Expose simulators as a service to humans and agents: create dashboards, online tools, and interactive reports

Who You Are

  • Your knowledge ranges across physics, geometry, and numerical methods; comfortable jumping into the complex 3D geometry of a stellarator
  • You hold a PhD or Master's in physics, engineering, or an adjacent field, and have built simulation tools encompassing numerical algorithms, geometry, and physics
  • You build in code like a software engineer: familiar with git, CI/CD, the PyData stack, autodifferentiation packages (like JAX or PyTorch)
  • You choose tools appropriately, whether a simple simulator or a commercial multiphysics package

Interview Process

Recruiter Interview (30-60 min), Technical Screening (30 min), Technical Panel (3x60 min).

Job Overview

100% EnglishNo German required
Proxima Fusion GmbHHiring Company
Sep 19, 2026Date Posted