Commonwealth Fusion Systems is on a mission to deliver the urgent transition to fusion energy. Combining decades of research, top talent and new technologies, we're designing and building commercially viable fusion power plants. And working with policymakers and suppliers to build the energy industry of the future. We're in the best position to make it happen. Since 2018, we've raised over $2 billion in capital - more than any other fusion energy company in the U.S. Now we're looking for more thinkers, doers, builders, and makers to join us. People who'll bring new perspectives, solve tough problems, and thrive as part of a team. If that's you and this role fits, we want to hear from you. Join the power movement as a Mechanical Engineer - Cable Magnets. As a Mechanical Engineer for the SPARC superconducting cable magnets, you will own hardware from early concepts to SPARC delivery, performing thermal, structural, and electromagnetic analysis using hand calculations and finite element methods. You will develop design notes, technical specifications, assembly procedures and documentation necessary to manufacture and install the hardware and supporting systems. In your role you will also support procurement in the preparation and execution of manufacturing contracts.