Cfs

Commonwealth Fusion Systems (CFS) is a private fusion energy company founded in 2017 by Bob Mumgaard and researchers from MIT's Plasma Science and Fusion Center. Headquartered in Boston, Massachusetts, CFS develops high-temperature superconducting magnet technology to enable practical, cost-effective fusion reactors. With approximately 350 employees, the company has raised over 1.2 billion dollars in Series B funding from institutional investors including Google, Khosla Ventures, and Breakthrough Energy Ventures. CFS aims to demonstrate commercial fusion power before the end of the 2020s and represents the growing private fusion sector advancing clean energy solutions through advanced materials and magnetic confinement physics.

Culture

CFS operates as a mission-driven startup culture within the deep-tech fusion sector. The company attracts top physics and engineering talent and maintains intense execution standards focused on near-term commercial milestones. Work emphasizes scientific rigor combined with engineering pragmatism. Teams collaborate across physics, materials science, and systems engineering to tackle fundamental challenges in making fusion power economically viable.

Benefits

  • Equity grants, Comprehensive health coverage, 401(k), Flexible work arrangements, Professional development support

Hiring velocity

12 open now, 12 first appeared in the last 30d.

Funding history 1 round, $1.2B total

RoundClosedAmountInvestors
Series BJun 2021$1.2BGoogle, Khosla Ventures, Breakthrough Energy Ventures, Eni, Commonwealth Fusion Systems

Open roles

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