Internal "Fusion Inclusion" employee group leads company-wide DEI events and initiatives. Leadership committed to proactively building diverse company where range of perspectives strengthen the mission. 71% of employees recommend working there per Glassdoor, with 4.1 rating for diversity and inclusion. Workforce grew 76.5% from 650 to 1,148 employees between 2023-2026.
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Commonwealth Fusion
MIT spin-off founded 2018 working to develop commercial fusion reactor for pollution-free energy without long-term nuclear waste. CEO Bob Mumgaard drives vision to combat climate change through technical innovation. In September 2021 demonstrated 20 tesla high-temperature superconducting magnet, world's largest by 100-1000x in performance. Raised $1.8B Series B from Temasek, Bill Gates, and Eni to build SPARC tokamak.
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Commonwealth Fusion — Environment: SUPPORTED MIT spin-off founded 2018 working to develop commercial fusion reactor for pollution-free energy without long-term nuclear waste. CEO Bob Mumgaard drives vision to combat climat… https://reciepts.tech/stance/1416
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See all →No layoffs on record through 2025 despite job posting decline (170 postings in 2024 to 86 in 2025). 72% positive business outlook among employees. Named to Boston Globe Tech Power Players for CEO Bob Mumgaard. Company maintains mission-driven culture focused on developing fusion as carbon-free energy source. Growing workforce with approximately 1,148 employees as of 2026.