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.

The SPARC Tokamak will be the first of its kind in many ways, including the use of fiber optic sensing arrays inside its magnets to monitor temperature and strain. These sensors will be vital to the longevity of the magnets and therefore to SPARC and future ARC power plants. We are looking for a Fiber Optic Applications Engineer who can vet potential technical and manufacturing solutions in order to guide the overall tokamak subsystem design—as well as planning for the technology needs of future fusion power plants and spin-off projects.

By 2025, SPARC will require an entire network of over one thousand fibers, uniquely identified and connectorized, in order to monitor and protect various magnet systems in the tokamak. These fibers will require robust installation and protection methods which may undergo high stress, high voltage, high vacuum, and cryogenic environments.

The Fiber Optic Applications Engineer will also be responsible for performing crucial optical fiber work such as fiber splicing, testing, and incorporation of fibers into complex design features while minimizing damage and attenuation to the fiber throughout its lifetime. The engineer will facilitate the research and development of these processes for the fiber type used in SPARC and establish the manufacturing guidelines needed for their incorporation.

This work is conducted within a multi-disciplinary team of physicists and engineers. Participation and clear, concise communication in design and test activities is necessary to both inform design decisions, prepare prototypes, and execute production.

CFS team members thrive in a fast-paced, dynamic environment and have demonstrated exceptional results through a range of different pursuits. We all tightly align with our company values of integrity, execution, impact and self-critique. As we grow, we are looking to add talented people who are mission driven and bring diverse perspectives and new ways of solving problems.

At CFS, we deeply value diversity and are an equal opportunity employer by choice. We consider all qualified applicants equally for employment. We do not discriminate on the basis of race, color, national origin, ancestry, citizenship status, protected veteran status, religion, physical or mental disability, marital status, sex, sexual orientation, gender identity or expression, age, or any other basis protected by law, ordinance, or regulation.