Commonwealth Fusion Systems jobs, careers, and hiring context

Explore Commonwealth Fusion Systems careers: 104 open roles hiring now. Find jobs at Commonwealth Fusion Systems with direct links to apply. Funding stage: Series B2. Headcount: 501-1000. Commonwealth Fusion Systems is an MIT spinout developing commercial fusion energy using high-temperature superconducting magnets in compact tokamak reactors. It is building the SPARC demonstration device and planning ARC, its first grid-connected fusion power plant, in Virginia.

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Open roles
104
Funding stage
Series B2
Total funding
$3B

Key facts

Commonwealth Fusion Systems is a Series B2 stage AI startup, founded in 2018, with $3B in total disclosed funding. Its most recent round was a $863M Series B2 in Aug 2025. It currently lists 104 open roles across Devens, MA, Devens, MA & Richmond, VA, Devens, MA & Somerville, MA, +2 more. Source: Fast AI Jobs company dataset, updated Sep 2026.

Sample open roles from this company

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Company profile last updated on Sep 26, 2026.