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Job Description

Commonwealth Fusion Systems (CFS) has the fastest, lowest cost path to commercial fusion energy.


CFS collaborates with MIT to leverage decades of research combined with groundbreaking new high-temperature superconducting (HTS) magnet technology. HTS magnets will enable compact fusion power plants that can be constructed faster and at lower cost. Our mission is to deploy these power plants to meet global decarbonization goals as fast as possible. To that end, CFS has assembled a team of leaders in tough tech, fusion science, and manufacturing with a track record of rapid execution. Supported by the world’s leading investors, CFS is uniquely positioned to deliver limitless, clean, fusion power to combat climate change. To implement this plan, we are looking to add dedicated people to the team who treat people well, improve our work by adding multifaceted perspectives and new ways of solving problems, have achieved outstanding results through a range of pursuits, and have skills and experience related to this role.


CFS is looking to grow the SPARC Long Wavelength Diagnostics team with a specialization on design and implementation of optical imaging systems to view the plasma. Early in SPARC’s operational life, imaging and spectroscopy tools can survive near the tokamak, but during high power D-T plasmas, these instruments must be in a remote diagnostic laboratory space. Optical imaging applications will include real-time plasma control, use for improving scientific understanding of burning plasma physics and in-vessel illumination and inspection. Final designs for two of eighteen of the in-vessel optical systems have been completed and CFS is looking for candidates to lead the remaining system design and shepherd the imaging systems through fabrication, assembly, calibration, commissioning and utilization. The Optical Imaging Lead will be responsible for the port-based light extraction optics and the optics used to relay UV, visible and infrared light to back-end diagnostic equipment. Candidates will work closely with the Plasma Spectroscopy Lead whose role will focus on design and deployment of light analysis tools. The Optical Imaging Lead will be responsible for maintaining the evolution of the system during SPARC’s operation life, and enhancements are also envisioned that leverage techniques demonstrated on existing tokamaks as well as a focus on imaging diagnostics transferable to ARC. Candidates will work as part of an integrated diagnostic and operations team that includes MIT-PSFC partners and fusion community collaborators from around the world. Prior experience working on tokamak or fusion plasma diagnostics is not required, and CFS encourages applications from people looking for a career transition who work in related technology areas with relevant optical instrumentation experience (defense, aerospace, astrophysics, etc.).

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