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Lead Power Engineer

Commonwealth Fusion Systems (CFS), an MIT spinout pursuing the fastest, surest way to clean, limitless fusion energy, is looking for an electrical systems engineer with at least 10 years of experience leading teams through the design and commissioning of large, RF and pulsed power systems.

CFS’ mission is to enable world-wide clean energy for everyone, creating a sustainable environment for current and future generations. We’ve created a credible path to an operating fusion power plant in 15 years which leverages our novel collaboration with MIT and funding from strategic and financial investors who share our vision. This begins by developing a new class of high-field superconducting magnets that will enable the SPARC tokamak to demonstrate net energy from fusion for the first time. To execute this plan, we are now looking to add talented people to the team who:

  • are mission-driven and treat people well;
  • improve our team by adding diverse perspectives & new ways of solving problems;
  • have demonstrated exceptional results through a range of different pursuits; and
  • have skillsets and experience that relate to the following role:

Lead Power Engineer

The SPARC tokamak will have an impressive power system, needing ~300 MW at >1 kV for ~10 s to charge the inductive load of its superconducting magnets as well as a ~50 MW ~120 MHz for ~10 s to heat the plasma to fusion conditions.

The Lead Power Engineer will:

  • work within a multi-disciplinary team of physicists and engineers as part of collaborative sponsored research projects at the MIT Plasma Science and Fusion Center (PSFC);
  • lead the engineering design team of electrical systems for the SPARC tokamak, including the utility switchyard, pulsed power, magnet power, RF power, and general site utility power;
  • ensure the design is in compliance with the Code of Record and established requirements;
  • maintain interfaces with other engineering subsystems; and
  • report on and be accountable for project progress to the head of SPARC device design as well as have regular engagement with the CEO and others in senior management positions.

The ideal candidate will have:

  • led a small team of skilled engineers through a least one design, build, and operate cycle of a large, high-reliability power system;
  • experience with a system similar to at least one of the following:
    • >1 kV, >10 kA, ~10 s pulsed power system (e.g., thyristors rectifiers use as power supplies for smelters, magnets, electrochemical processing, traction, etc.), and/or
    • >1 MW VHF RF system;
  • at least a bachelor’s degree in a relevant engineering field (e.g., electrical, power);
  • strong leadership abilities, experience building teams, and a talent for inspiring collaboration and execution;
  • an exceptional safety record and attention to detail;
  • familiarity in applying IEEE standards to design solutions;
  • demonstrated skill in modern computational design and engineering tools;
  • an ability to clearly express and critique ideas;
  • an emphasis on elegance and simplicity over complexity;
  • a drive towards commercially viable solutions;
  • a history of thriving in fast-paced, dynamic environment; and
  • values that align with our company’s values of integrity, execution, impact, and self-critique.

If you share our mission and believe you are a good fit for this position, please send a cover letter and resume to, with “Lead Power Engineer” in the subject line.

At CFS, we deeply value diversity and are an equal opportunity employer by choice.