---
title: 'Multiphysics Simulation Engineer at Proxima Fusion'
canonical: 'https://feeny.ai/job/multiphysics-simulation-engineer-proxima-fusion-munich-v56fna4jp79v'
type: 'job'
last_seen: '2026-09-05'
---

# Multiphysics Simulation Engineer at Proxima Fusion

- **Company:** Proxima Fusion
- **Location:** Munich, Germany
- **Employment:** full-time
- **Work type:** onsite
- **Posted:** 2026-09-03
- **Last confirmed live:** 2026-09-05
- **Apply:** https://jobs.ashbyhq.com/proxima-fusion/06cd24ea-a76f-497e-bf70-c7ec94bc1d0b

## Job description

## 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

- 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.
- 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.
- 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.

## WHY JOIN PROXIMA FUSION

- You will get to work on some of the most complex tech challenges to bring abundant, safe, clean energy to the world.
- You'll get to join and learn from an exceptional selection of accomplished and driven individuals.
- Do your life’s best work and enjoy the journey.
- Get to show that big things are possible in Europe when you assemble the best talent.

## YOUR IMPACT

Alpha will be the first stellarator to achieve net energy. Getting there requires building a deeply coupled machine, where plasma, magnets, structures, cryogenics, heating work as one, and work at the edge of what each discipline can deliver on its own. You will own the complex calculations that set the requirements each system needs to be designed against. You will be accountable for providing the engineering design teams with reasonably estimated and correctly validated load cases that drive the design of the machine.

## WHAT YOU WILL DO

- Own simulation pipelines end to end. From physics assumptions through to the machine-defining load cases you provide the subsystem to teams. You own the whole chain, not a step in it.
- Build the simulators. Finite-element models where that's the right instrument, a reduced-order model coded from scratch where it isn't, all of it properly interfaced with our codebase.
- Set the interfaces. Define with each engineering team what goes in, what comes out, what it means and what it doesn't cover.
- Scan the space. Run parameter sweeps and simulation campaigns at scale to settle machine-level tradeoffs before they're locked in.
- Prove the numbers. Benchmark, cross-check against analytical limits and experiment, and know the boundary where your model stops being trustworthy.

## WHO YOU ARE

- You range across physics and geometry. You are not afraid of jumping between Lorentz forces in a stellarator and the 3D geometry.
- You've earned that breadth. A PhD or Master's in physics, engineering, or an adjacent field, and time spent where multiphysics analysis actually drives hardware decisions: space, accelerators, semiconductors, aircraft, or anywhere else complex machines get built at scale.
- You build in code like an engineer, not a scripter. Git, CI/CD, and the PyData stack are second nature, and you've shipped real software, not a folder of one-off scripts.
- You reach for whatever tool fits. Pen and paper, a solver you wrote last night, or a commercial multiphysics package, the method serves the question, never the reverse.
- You think in pipelines. Automation, reproducibility, validation. And you can tell when a passing series of tests isn't actually telling the truth.
- You're proactive. You find the gap before it becomes a problem, prioritize hard, and argue for the next step.

## INTERVIEW PROCESS

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

*This role sits at PF3 of our framework, please inquire during the recruitment process for further information.

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.

## About Proxima Fusion

## Company Overview
- **One-liner**: A European fusion energy company building quasi-isodynamic stellarator power plants to deliver clean, safe, and abundant energy.
- **Entity Type**: Private (Series A – €130M raised in June 2025 plus €15M extension in September 2025)
- **Headquarters**: Munich, Germany (additional offices in Zürich, Switzerland and Oxford, United Kingdom)
- **Founded**: April 2023
- **Founders**: Francesco Sciortino, Lucio Milanese, Jorrit Lion, Jonathan Schilling, Martin Kubie

## Core Business
- **Primary industry**: Fusion energy (energy production)
- **Target customers**: Energy companies, grid operators, and technology partners (B2B / Enterprise)
- **Mission**: “Enabling human ambitions in a future with fusion energy” – providing abundant, clean, and safe energy for all.

## Products & Services
- **Alpha Demonstration Stellarator**: A prototype stellarator designed to demonstrate net energy gain in steady-state, planned for first plasma around 2031.
- **Stellaris Fusion Power Plant Concept**: A peer-reviewed, first-of-its-kind design for a commercial stellarator fusion power plant, targeting grid deployment in the late 2030s.
- **Stellarator Model Coil (SMC)**: A demonstration high-temperature superconducting (HTS) magnet completed to validate coil technology for Alpha and Stellaris.
- **Core Technology**: Quasi-isodynamic (QI) stellarator design combined with computational optimization, HTS magnets, and rapid prototyping – all leveraged from the record-breaking Wendelstein 7-X experiment.

## Market Standing
- **Valuation / Market Cap**: Not publicly available (private company)
- **Key Metric**: Total funding ~€200M (≈$230M) in public and private capital, including pre-seed (€7.5M), seed (€20M), Series A (€130M + €15M extension), and additional grants from the European Innovation Council and the German Federal Ministry of Education and Research.
- **Notable Investors / Partners**: Plural Platform, UVC Partners, redalpine, Bayern Kapital, DeepTech & Climate Fonds, Max Planck Foundation, High-Tech Gründerfonds, Visionaries Club, Wilbe. Strategic partners include the Max Planck Institute for Plasma Physics (IPP), Karlsruhe Institute of Technology (KIT), and Paul Scherrer Institute (PSI).
- **Growth Signals**: Team grown from founding to 100+ world-class scientists, engineers, and operators; completion of the Stellarator Model Coil; publication of the Stellaris power plant concept; convening an Industrial Development Board to scale European fusion supply chains; appointment of CFO Sergei Galperin (June 2026); integration of AI-driven design methods.

## Competitive Advantages
- **QI Stellarator approach**: Toroidal currents cancel to zero, enabling inherently stable, continuous operation without the plasma disruptions that challenge tokamaks.
- **Direct lineage from W7-X**: As the first spin-out from the Max Planck Institute for Plasma Physics, the team builds on decades of stellarator research and the world’s most advanced stellarator experiment.
- **Simulation-first + rapid prototyping**: Combines cutting-edge computational design with HTS magnet technology to accelerate development timelines.
- **Top-tier talent pool**: Team members from Max Planck IPP, MIT, SpaceX, Tesla, McLaren, Google X, EPFL, Stanford, Cambridge, and other leading institutions.
- **Deep European ecosystem ties**: Close collaboration with public research institutes, industrial partners, and government funders.

## Strategic Focus
- **Near-term (2026–2031)**: Complete the design and construction of the Alpha demonstration stellarator, demonstrate net energy in steady-state, and advance HTS magnet technology through continued R&D.
- **Mid-term (2030s)**: Scale from Alpha to the Stellaris fusion power plant, targeting first electricity to the grid in the late 2030s.
- **Long-term**: Establish a new clean energy infrastructure by industrializing stellarator power plants and securing supply chains across Europe.

## Why Work Here
- **Mission with impact**: Tackle one of humanity’s greatest challenges – unlimited, clean, and affordable energy.
- **High-performance culture**: Described as a “professional sports team” where success depends on placing the right person in the right role with real ownership from day one.
- **Collaborative environment**: Work alongside exceptional peers from top tech, science, and engineering organizations; take on meaningful responsibility early.
- **Locations**: Offices in Munich (HQ), Zürich (PSI campus), and Oxford (Culham Campus) – likely on-site given the hands-on nature of fusion R&D.
- **Diverse disciplines**: Opportunities for engineers, scientists, operators, and business roles in a fast-growing deep-tech startup.

## Sources
1. [proximafusion.com](https://www.proximafusion.com/)
2. [proximafusion.com/about](https://www.proximafusion.com/about)
3. [proximafusion.com/careers](https://www.proximafusion.com/careers)
4. [jobs.ashbyhq.com/proxima-fusion](https://jobs.ashbyhq.com/proxima-fusion)
5. [en.wikipedia.org/wiki/Proxima_Fusion](https://en.wikipedia.org/wiki/Proxima_Fusion)

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