Commonwealth Fusion Systems is on a mission to deliver the urgent transition to fusion energy. We're designing and building commercially viable fusion power plants, combining decades of research, top talent, and new technologies. Since 2018, we've raised over $2 billion in capital, more than any other fusion energy company in the U.S. We're seeking a Tokamak Instrumentation Optical Engineer to join our SPARC Tokamak Instrumentation & Control Team. This role involves designing, analyzing, prototyping, and integrating optical systems that instrument superconducting magnets in extreme environments. You'll work with high-power industrial laser systems, design in 3D CAD, manage suppliers, produce documentation, and collaborate with lead engineers. The ideal candidate has experience with high-powered laser systems, a degree in engineering or related field, and the ability to work in challenging environments. Join us in shaping the future of energy!