Company jobs
Jobs at Commonwealth Fusion
117 open roles · 17 added this week
Open roles at Commonwealth Fusion
Intern - Plasma Physics - Summer 2027
Massachusetts · onsite · Internship · intern
Posted 27 Oct 2026
Intern - Composites and Insulation Materials - Summer 2027
Massachusetts · onsite · Internship · intern
Posted 27 Oct 2026
Intern - I&C and Network Engineer - Spring or Summer 2027
Massachusetts · onsite · Internship · intern
Posted 27 Oct 2026
Intern - Systems Engineer - Summer 2027
Massachusetts · onsite · Internship · intern
Posted 27 Oct 2026
Intern - Microwave Engineer - Summer 2027
Massachusetts · onsite · Internship · intern
Posted 26 Oct 2026
Intern - Cryogenics Engineer - Spring 2027
Massachusetts · onsite · Internship · intern
Posted 26 Oct 2026
Intern - EHS Engineer - Spring or Summer 2027
Massachusetts · onsite · Internship · intern
Posted 26 Oct 2026
Senior Manufacturing Engineer - Second Shift
Massachusetts · onsite · Senior · full time
Posted 26 Oct 2026
Intern - Materials Test Engineer - Summer 2027
Massachusetts · onsite · Internship · intern
Posted 22 Oct 2026
Treasury and Tax Analyst
Massachusetts · onsite · full time
Posted 22 Oct 2026
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Commonwealth Fusion hiring at a glance
Hiring across Engineering (6), Finance & Accounting (1), IT & Security (1).
By level: Internship (8), Senior (1).
Most common locations: Massachusetts (10).
Counted from the roles listed above. Many postings do not list pay.