How much does Commonwealth Fusion Systems pay?
As of Oct 24, 2026, 117 of the 117 open jobs Commonwealth Fusion Systems has on Alion state a salary. The median is $160k a year, and the middle half pays $104k to $205k. The best-paid open role is Principal Mechanical Engineer - Web Handling at $270k. Commonwealth Fusion Systems pays about 11% above the market for the same roles, levels and countries.
Commonwealth Fusion Systems pay against the market
+11% Commonwealth Fusion Systems pays about 11% above the market for the same roles, levels and countries.
Each of 141 postings is compared with the median stated pay for its role, level and country across all employers on Alion; the middle ratio, drawn toward the market when few postings back it, gives the figure.
Commonwealth Fusion Systems pay by level
| Level | Jobs | Median | Typical range |
|---|---|---|---|
| Senior | 63 | $185k | $145k – $205k |
| Staff+ | 13 | $230k | $230k – $240k |
| Lead | 10 | $104k | $104k – $230k |
| Intern | 10 | $76k | $76k |
| Junior | 7 | $104k | $80k – $120k |
| Middle | 5 | $135k | $90k – $160k |
| Head+ | 4 | $250k | $250k |
Commonwealth Fusion Systems pay by role
| Role | Jobs | Median | Typical range |
|---|---|---|---|
| Industrial Engineering | 47 | $205k | $145k – $205k |
| Field & Service | 19 | $96k | $90k – $104k |
| Finance | 6 | $177k | $141k – $205k |
| Energy | 6 | $145k | $76k – $205k |
| Operations | 5 | $230k | $185k – $250k |
| Hardware | 5 | $205k | $160k – $205k |
| Science & Research | 4 | $230k | $230k |
| Management | 4 | $210k | $185k – $215k |
| Backend | 4 | $160k | $160k – $205k |
| Administrative | 4 | $80k | $80k |
Commonwealth Fusion Systems pay by city
| Location | Jobs | Median | Typical range |
|---|---|---|---|
| Devens | 92 | $160k | $104k – $205k |
| Milpitas | 10 | $210k | $126k – $240k |
| Somerville | 8 | $96k | $82k – $130k |
Commonwealth Fusion Systems pay by work format
| Work format | Jobs | Median | Typical range |
|---|---|---|---|
| In office | 86 | $145k | $90k – $205k |
| Hybrid | 27 | $205k | $160k – $230k |
| Remote | 4 | $230k | $205k – $230k |
How pay at Commonwealth Fusion Systems is spread
117 of 117 vacancies state a salary (100%). The range below is built from those 117 stated figures only, never from an estimate.
Best-paid open roles at Commonwealth Fusion Systems
| Principal Mechanical Engineer - Web HandlingLead | $270k |
| Assistant General Counsel – CommercialStaff+ | $260k |
| Principal RF Systems EngineerLead | $260k |
| Principal Scientist - Radio Frequency Plasma HeatingLead | $260k |
| Head of Power OriginationHead+ | $250k |
| Senior Manager, Accounting OperationsSenior | $250k |
| Director, Corporate FP&AHead+ | $250k |
| Director, Manufacturing, Operations & Supply Chain FinanceHead+ | $250k |
| Director, Supply ChainHead+ | $250k |
| Senior Manager, Mechanical Engineering — Vacuum VesselSenior | $250k |
Questions about pay at Commonwealth Fusion Systems
What is the average salary at Commonwealth Fusion Systems?
The median salary stated in Commonwealth Fusion Systems job postings is $160k a year, across 117 open jobs with pay; the middle half pays $104k to $205k.
How much does Commonwealth Fusion Systems pay for Industrial Engineering roles?
Industrial Engineering roles at Commonwealth Fusion Systems state a median of $205k a year (47 postings with pay, middle half $145k – $205k).
How much does Commonwealth Fusion Systems pay for Field & Service roles?
Field & Service roles at Commonwealth Fusion Systems state a median of $96k a year (19 postings with pay, middle half $90k – $104k).
How much does Commonwealth Fusion Systems pay for Finance roles?
Finance roles at Commonwealth Fusion Systems state a median of $177k a year (6 postings with pay, middle half $141k – $205k).
How much does Commonwealth Fusion Systems pay in Devens?
Jobs at Commonwealth Fusion Systems in Devens state a median of $160k a year (92 postings with pay).
What is the highest-paying open job at Commonwealth Fusion Systems?
Right now it is Principal Mechanical Engineer - Web Handling at Commonwealth Fusion Systems, with a stated $270k a year.
Does Commonwealth Fusion Systems pay above the market?
Commonwealth Fusion Systems pays about 11% above the market for the same roles, levels and countries. Each of 141 postings is compared with the median stated pay for its role, level and country across all employers on Alion; the middle ratio, drawn toward the market when few postings back it, gives the figure.
Does Commonwealth Fusion Systems publish salaries in its job postings?
100% of the open jobs Commonwealth Fusion Systems has on Alion state a salary: 117 of 117.
How to cite this page
Only pay an employer wrote in its own job advert is used, converted to US dollars a year; estimates are never mixed in. The figures are rebuilt twice a day from the vacancies open now.
These figures are published under a free licence. You may reuse them, including commercially, as long as you credit Alion and link back to this page.
Commonwealth Fusion Systems salaries: median $160k across 117 job postings with pay. Alion, Oct 24, 2026, https://alion.io/company/commonwealth-fusion-systems/salaries