Power Electronics Engineer

About the Position

Power Electronics Engineer

---

About the Company

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

• Evaluate and develop power conversion topologies for converters, considering performance, efficiency, electrical stresses, thermal behaviour, reliability, power density, and system requirements.
• Design and develop magnetic components such as inductors, transformers, and chokes, including selection of magnetic materials, core geometries, winding concepts, and evaluation of losses and thermal limitations.
• Develop analytical and simulation models to evaluate converter behaviour, semiconductor stresses, switching and conduction losses, efficiency, and performance across relevant operating conditions.
• Build prototypes and perform laboratory testing, characterization, verification, troubleshooting, and validation of power electronic circuits and converter stages.
• Analyse test results and correlate measurements with simulations and calculations to identify design improvements and validate converter performance.

---

Requirements

• University (Higher education) degree in Electrical Engineering, Power Electronics, or a related field.
• Experienced in taking power-stage designs from initial concept and simulation through component selection, prototype implementation, laboratory measurement, debugging, and validation.
• Expert in power conversion topologies, power semiconductors, magnetic components, and passive components.
• Experience with electro-thermal simulation tools such as PLECS is a plus.
• Experience with SiC or GaN semiconductors, high-frequency magnetics is a plus.

---

We Offer

• Opportunity to work on cutting-edge power conversion technologies.
• Collaborate with a highly ambitious, multidisciplinary team.
• Contribute to the development of the world’s first commercial stellarator fusion power plant.

---

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.