Data as of 2026-06-04
vs 
Commonwealth Fusion Systems vs Helion Energy
Hiring comparison for two climate-tech companies. Helion Energy shows the larger live hiring footprint with 128 active roles, compared with 109 at Commonwealth Fusion Systems. Commonwealth Fusion Systems spans 6 tracked job locations while Helion Energy spans 1. Commonwealth Fusion Systems lists 2 remote-friendly roles; Helion Energy lists 0.
Commonwealth Fusion Systems roles
Helion Energy roles
Combined locations
Combined remote
Last refreshed
Side-by-side data
| Metric | Commonwealth Fusion Systems | Helion Energy |
|---|---|---|
| HQ | Devens, US | Everett, US |
| Website | cfs.energy | helionenergy.com |
| ATS | lever | ashby |
| Open roles | 109 | 128 |
| Tracked locations | 6 | 1 |
| Remote-friendly roles | 2 | 0 |
| Onsite roles | 98 | 0 |
| Newest posting | 2026-06-03 | Not dated |
| Top role mix | Manufacturing 40, Engineering 24, Other 24 | Engineering 62, Other 20, Manufacturing 14 |
| Top locations | Devens, MA, Somerville, MA, Milpitas, CA, Devens, MA & Richmond, VA | Everett, WA |
What differs
Commonwealth Fusion Systems is headquartered in Devens, US and uses lever for its current openings. Its tracked hiring mix is led by Manufacturing 40, Engineering 24, Other 24, with recent roles spread across Devens, MA, Somerville, MA, Milpitas, CA, Devens, MA & Richmond, VA. Helion Energy is headquartered in Everett, US and uses ashby. Its tracked hiring mix is led by Engineering 62, Other 20, Manufacturing 14, with recent roles spread across Everett, WA.
This comparison is based on live public ATS data rather than employer claims. The strongest difference today is hiring volume: Commonwealth Fusion Systems has 109 active roles and Helion Energy has 128. Remote availability also differs, with 2 remote-friendly roles at Commonwealth Fusion Systems and 0 at Helion Energy. Use the company pages below to inspect every posting before applying through the original employer ATS.
Latest Commonwealth Fusion Systems roles
- Lead Assembly Technician - Third Shift Devens, MA · onsite · posted 2026-06-03
- Lead Assembly Technician - Second Shift Devens, MA · onsite · posted 2026-06-03
- Fiber Optic Specialist Somerville, MA · onsite · posted 2026-06-03
- Senior Manager, Manufacturing Engineering Devens, MA · onsite · posted 2026-06-02
- Production Technician Supervisor - First Shift Devens, MA · onsite · posted 2026-06-02
- Buyer Devens, MA · hybrid · posted 2026-06-01
Latest Helion Energy roles
- Build Reliability Manager Everett, WA
- R&D Manager of Test & Development Everett, WA
- Senior Multiphysics Simulation Engineer Everett, WA
- Mechanical Engineering Manager, Modules Everett, WA
- EHS Specialist (Swing Shift) Everett, WA
- Senior Technologist - Materials Everett, WA
Other comparisons
- Form Energy vs Helion Energy · 230 combined open roles
- Astranis vs Commonwealth Fusion Systems · 246 combined open roles
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- Commonwealth Fusion Systems vs Form Energy · 211 combined open roles
- Astranis vs Helion Energy · 265 combined open roles
FAQ
- Who is hiring more — Commonwealth Fusion Systems or Helion Energy?
- Helion Energy has more open roles (128) than Commonwealth Fusion Systems (109) as of 2026-06-04.
- Where do Commonwealth Fusion Systems and Helion Energy overlap geographically?
- Commonwealth Fusion Systems HQ: Devens, US; Helion Energy HQ: Everett, US. Commonwealth Fusion Systems hires across Devens, MA, Somerville, MA, Milpitas, CA, Devens, MA & Richmond, VA. Helion Energy hires across Everett, WA.
- Which is more remote-friendly?
- Commonwealth Fusion Systems lists 2 remote-friendly roles (2% of openings); Helion Energy lists 0 (0%). Counts are from each employer's ATS workplace_type field.
- Which roles are most active at Commonwealth Fusion Systems and Helion Energy?
- Commonwealth Fusion Systems: Manufacturing 40, Engineering 24, Other 24. Helion Energy: Engineering 62, Other 20, Manufacturing 14.
- How fresh is this comparison?
- Refreshed 2026-06-04. Jobs are pulled from each company's public ATS API (Greenhouse / Lever / Ashby / Workable / SmartRecruiters / Recruitee) on a daily cron. Climate Job Radar is not affiliated with either company.
Related
Source: Job listings from each company's public ATS API (Greenhouse / Lever / Ashby / Workable / SmartRecruiters / Recruitee), refreshed daily. Last refreshed 2026-06-04.