Electrical Engineer - Power Electronics

Marathon Fusion•San Francisco, CA

18h•Onsite

About The Position

Marathon Fusion is building the engineering technologies needed to scale fusion from breakeven experiments into real power plants. While much of the industry is focused on proving new fusion devices, our focus is on the practical systems that will make fusion deployable at climate-relevant scale. We develop core fuel cycle and plant-level technologies for stable isotope production, fuel cycle closure, and advanced blanket systems that enable both energy generation and high-value co-products. Founded in 2023, Marathon Fusion is building the components and systems that will help fusion become a practical, abundant, and reliable energy source for the 21st century. Culture at Marathon Fusion We are a startup environment characterized by a need for focus, adaptability and prioritization in a shifting landscape. Thriving in this environment requires excellent proactive communication across roles and backgrounds, the ability to build and maintain trust between team members, and the willingness to learn and develop new skills on the job. We place particularly high weight on each team member's ability to be self-directed. About the Role As an Electrical Engineer at Marathon Fusion, you'll work closely with our R&D team of mechanical engineers, physicists, and technicians to prototype, test, and deploy solutions in the pursuit of advancing fusion fuel cycles. From PBC design to testing high-voltage, high-current systems, you'll play a pivotal role in developing robust power electronics for our Plasma Centrifuge and Transmutation R&D efforts.

Requirements

Experience with power electronics design
Experience with PCB design and layout tools
Strong fundamentals in circuits, electromagnetics, and system design
Hands-on experience building and testing hardware
Strong debugging and problem-solving skills

Nice To Haves

Experience leading or mentoring in electrical engineering settings
Familiarity with compact high-voltage and/or high-power systems -- large-scale capacitors, DC-DC converters, battery energy storage systems, power transmission and high power DC power supplies
Familiarity with LabVIEW, Python, or similar tools for interacting with control and data acquisition systems

Responsibilities

Design and develop power electronics subsystems, including capacitor banks, battery systems, power conversion, and switching.
Design, prototype, and test PCBs for experimental systems.
Integrate power electronics into high-voltage and high-current systems at the platform level.
Work closely with mechanical engineers, controls engineers, physicists, and technicians to build and integrate electrical systems into experimental platforms.
Test, validate, and troubleshoot hardware in lab environments.
Drive safe design practices for high-energy systems.