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How much do commonwealth fusion systems jobs pay per hour?

As of Jun 9, 2026, the average hourly pay for commonwealth fusion systems in the United States is $53.61, according to ZipRecruiter salary data. Most workers in this role earn between $45.67 and $60.82 per hour, depending on experience, location, and employer.

What is a Commonwealth Fusion Systems job?

A Commonwealth Fusion Systems (CFS) job typically involves working on developing commercial fusion energy using high-temperature superconducting magnets and advanced tokamak designs. Employees at CFS contribute to engineering, scientific research, manufacturing, and operations to accelerate the path to fusion power. Roles can range from plasma physicists and mechanical engineers to project managers and technicians. The company focuses on innovation, rapid prototyping, and collaboration with academic and industry partners. Working at CFS offers the opportunity to be part of a groundbreaking effort to bring clean, limitless energy to the world.

What is the typical work environment like at Commonwealth Fusion Systems?

Employees at Commonwealth Fusion Systems typically work in a fast-paced, highly collaborative environment focused on the advancement of fusion energy technology. Teams often consist of multidisciplinary experts, including physicists, engineers, and technicians, working together on both experimental and theoretical projects. The company encourages open communication, knowledge sharing, and continuous learning, so you’ll frequently collaborate across departments on cutting-edge innovations. This structure not only drives progress in fusion research but also provides ample opportunities for personal development and career growth.

What are the key skills and qualifications needed to thrive in the Commonwealth Fusion Systems position, and why are they important?

To thrive at Commonwealth Fusion Systems, strong backgrounds in physics, engineering, or related STEM fields, along with advanced problem-solving and analytical skills, are essential. Familiarity with fusion technology, CAD software, high-performance computing platforms, and relevant industry certifications is commonly required. Collaboration, adaptability, and effective communication are standout soft skills in this innovative environment. These abilities are crucial for safely developing complex fusion systems and advancing clean energy solutions through teamwork and technical excellence.

More about Commonwealth Fusion Systems jobs
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Commonwealth Fusion Systems jobs near you
Infographic showing various Commonwealth Fusion Systems job openings in the United States as of June 2026, with employment types broken down into 100% Full Time. Highlights an 94% Physical, 2% Hybrid, and 4% Remote job distribution, with an average salary of $111,508 per year, or $53.6 per hour.
Mechanical Test Technician - Contract

Mechanical Test Technician - Contract

Commonwealth Fusion Systems

Devens, MA • On-site

$38 - $49/hr

Contractor

Posted 17 hours ago

Job description

About Commonwealth Fusion Systems:
Commonwealth Fusion Systems is on a mission to deliver the urgent transition to fusion energy.
Combining decades of research, top talent, and new technologies, we're designing and building commercially viable fusion power plants. And we're working with policymakers and suppliers to build the energy industry of the future.
We're in the best position to make it happen. Since 2018, we've raised nearly $3 billion in capital, making us the largest and leading private fusion company in the world.
Now we're looking for more thinkers, doers, builders, and makers to join us. People who'll bring new perspectives, solve tough problems, and thrive as part of a team.
If that's you and this role fits, we want to hear from you.
Join the power movement as a Contract Mechanical Test Technician
We are seeking an experienced Mechanical Test Technician to support assembly and testing activities for the SPARC components under the SATP program. This individual will work alongside our current Lead Mechanical Tech to execute high-stakes vacuum and pressure testing.
What you'll do:
  • Helium Leak Detection: Perform advanced leak testing using tracer probe, hood, and helium-filled object techniques.
  • Pressure Testing: Execute pneumatic pressure proofing protocols according to safety and engineering standards.
  • Vacuum System Integration: Set up, connect, and operate turbomolecular pumps and mass spectrometer leak detectors (MSLD).
  • Hardware Competency: Proficently handle and install various vacuum and fluid connections, specifically KF, CF, VCR, compression fittings, and NPT.

What we're looking for:
  • 3+ years experience in alead or senior technical role involving complex mechanical assembly
  • Minimum 40 hours of formal classroom training in NDT/Leak Testing; ideally currently certified or eligible for ASNT Level II in Leak Testing (LT)
  • Proven experience troubleshooting vacuum system integrity and managing system-wide leak detection protocols
  • Familiarity with the hardware used in fusion-relevant or high-vacuum environments
  • Demonstrated experience working around high-hazard environments (vacuum forces, high pressure, and cryogenics)

Must-have requirements:
  • Ability to occasionally lift up to 50 lbs
  • Perform activities such as stooping, climbing, typing, standing, or sitting for extended periods of time
  • Work in a facility that contains industrial hazards including heat, cold, noise, fumes, strong magnets, lead (Pb), high voltage, high current, pressure systems, and cryogenics
  • Willingness to travel or work required nights/weekends/on-call occasionally

$38 - $49 an hour
This is a contract position.
#LI-Onsite
#CFS-NE
At CFS, we excel in fast-paced environments, driven by our values of integrity, execution, impact, and self-critique. As we grow, we're eager to bring on mission-driven folks who offer diverse perspectives and fresh ways to tackle challenges.
We value diversity deeply and are proud to be an equal opportunity employer by choice. We consider all qualified applicants equally, regardless of race, color, national origin, ancestry, citizenship status, protected veteran status, religion, physical or mental disability, marital status, sex, sexual orientation, gender identity or expression, age, or any other basis protected by law.
This role requires compliance with U.S. laws concerning the export of controlled or protected technologies or information (collectively, "Export Control Laws"). Any offer of employment will be contingent on the need for compliance with such Export Control Laws.

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