Hiring data · updated October 27, 2026
Commonwealth Fusion Systems jobs and internships
Commonwealth Fusion Systems has 126 open jobs, 126 of them in the US, led by technician and skilled trades, mechanical engineer, and manufacturing and process engineer roles. The biggest hiring locations are Boston and San Francisco Bay Area, and 3% of roles are remote. US postings that list pay have a median range of $110K–$181K a year. Right now there are 12 internships open.
Internships and entry-level roles at Commonwealth Fusion Systems
| Role | Location | Level | Posted |
|---|---|---|---|
| Intern - Micorwave Engineer - Summer 2027 | Devens, MA | Internship | Oct 26 |
| Intern - Cryogenics Engineer - Spring 2027 | Devens, MA | Internship | Oct 26 |
| Intern - EHS Engineer - Spring or Summer 2027 | Devens, MA | Internship | Oct 26 |
| Intern - Materials Test Engineer - Summer 2027 | Devens, MA | Internship | Oct 22 |
| Intern - Nuclear Engineer - Summer 2027 | Devens, MA | Internship | Oct 15 |
| Intern - Mechanical Engineer - Summer 2027 | Milpitas, CA | Internship | Oct 15 |
| Intern - Controls Engineer - Summer 2027 | Milpitas, CA | Internship | Oct 15 |
| Intern - Mechanical Equipment Engineer - Spring 2027 | Devens, MA | Internship | Oct 15 |
Newest openings
| Role | Location | Level | Posted |
|---|---|---|---|
| Intern - Micorwave Engineer - Summer 2027 | Devens, MA | Internship | Oct 26 |
| Intern - Cryogenics Engineer - Spring 2027 | Devens, MA | Internship | Oct 26 |
| Intern - EHS Engineer - Spring or Summer 2027 | Devens, MA | Internship | Oct 26 |
| Senior Manufacturing Engineer - Second Shift | Devens, MA | Senior | Oct 26 |
| Intern - Materials Test Engineer - Summer 2027 | Devens, MA | Internship | Oct 22 |
| Fiber Optic Specialist - First Shift | Somerville, MA | Mid-level | Oct 22 |
| Treasury and Tax Analyst | Devens, MA | Mid-level | Oct 22 |
| Technical Accounting and Internal Controls Lead | Devens, MA | Senior | Oct 22 |
| Accounts Payable Specialist | Devens, MA | Mid-level | Oct 22 |
| Materials Test Operator - Contract | Devens, MA | Mid-level | Oct 21 |
| Staff OT/IT Support Engineer | Milpitas, CA | Senior | Oct 16 |
| Senior Mechanical Engineer | Milpitas, CA | Senior | Oct 16 |
| Field Assembly Manager | Devens, MA | Mid-level | Oct 16 |
| Intern - Nuclear Engineer - Summer 2027 | Devens, MA | Internship | Oct 15 |
| Intern - Assembly Technical Project Manager - Spring 2027 | Devens, MA | Mid-level | Oct 15 |
The 15 most recent of 126 open roles. See every opening on Commonwealth Fusion Systems's job board.
What Commonwealth Fusion Systems is hiring for
| Role | Open | Median posted pay (US) |
|---|---|---|
| Technician and skilled trades | 21 | $31–$45/hr (21) |
| Mechanical engineer | 16 | $134K–$205K (16) |
| Manufacturing and process engineer | 14 | $134K–$205K (14) |
| Supply chain and procurement | 7 | $90K–$140K (7) |
| Electrical engineer | 6 | $134K–$205K (6) |
| Software engineer | 5 | $134K–$205K (5) |
| Test and validation engineer | 5 | $107K–$160K (5) |
| Project manager | 4 | $136K–$208K (4) |
| Accountant | 3 | $142K–$177K (3) |
| Chemical and materials engineer | 3 | $152K–$230K (3) |
| Financial analyst | 2 | — |
| Systems engineer | 2 | — |
| Lab scientist and research associate | 2 | — |
| Lawyer and legal counsel | 1 | — |
| IT support | 1 | — |
Roles are grouped from job titles. Pay is the median of the ranges stated in US postings, with the number of postings in brackets; most US states and cities now require postings to include one.
Teams
| Corporate Operations | 40 | 32% | |
| Engineering | 19 | 15% | |
| R&D | 19 | 15% | |
| SPARC Tokamak Team | 15 | 12% | |
| Internships | 13 | 10% | |
| Superconductor | 7 | 6% | |
| Finance | 6 | 5% | |
| Business | 5 | 4% | |
| Legal | 1 | 1% | |
| People Operations | 1 | 1% |
Where the jobs are
| Boston | 114 | 90% | |
| San Francisco Bay Area | 11 | 9% |
Seniority
| Internship | 12 | 10% | |
| Mid-level | 52 | 41% | |
| Senior | 57 | 45% | |
| Leadership | 5 | 4% |
Companies hiring for similar roles
Questions
Is Commonwealth Fusion Systems hiring right now?
Yes. Commonwealth Fusion Systems had 126 open roles on its job board on October 27, 2026, 10 of them posted in the previous 7 days.
Does Commonwealth Fusion Systems have internships?
Yes, 12 internships were open on October 27, 2026. They're listed above with links to apply on Commonwealth Fusion Systems's own job board.
Does Commonwealth Fusion Systems hire remote?
4 of Commonwealth Fusion Systems's 126 open roles (3%) are listed as remote.
How much does Commonwealth Fusion Systems pay?
Across 126 US job postings at Commonwealth Fusion Systems that state a pay range, the median range is $110K–$181K a year (the middle half of ranges runs from about $75K to $210K). Ranges by role are in the table above.
Applying to Commonwealth Fusion Systems?
Lil Sally applies to internships and entry-level roles for you overnight, straight on the company’s own job board, and tells you what she sent in the morning.
About this data
ElegyLabs isn't affiliated with Commonwealth Fusion Systems. These numbers come from Commonwealth Fusion Systems's public job board on Lever, read on October 27, 2026 and refreshed every Monday. Roles and seniority are worked out from job titles, so a few land in the wrong bucket. We link to each posting on Commonwealth Fusion Systems's own board and don't copy job descriptions; pay figures are the ranges the postings themselves state.
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