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 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 an Equipment Technician
We are seeking a skilled and hands-on Equipment Technician to join our team. This technician will support the build, maintenance, and continuous improvement of complex equipment used in both the HTS Pilot line and characterization lab. This role involves working with advanced vacuum systems, thermal processes, instrumentation, and large-scale assemblies in a fast-paced, R&D-focused environment.
Join the power movement as an Equipment TechnicianWe are seeking a skilled and hands-on Equipment Technician to join our team. This technician will support the build, maintenance, and continuous improvement of complex equipment used in both the HTS Pilot line and characterization lab. This role involves working with advanced vacuum systems, thermal processes, instrumentation, and large-scale assemblies in a fast-paced, R&D-focused environment.
Salary range for this full-time position + equity + benefits. The actual salary will depend on level, location, qualifications, and experience. The range displayed on each job posting reflects new hire salaries for the position across all US locations. Benefits include:
• Competitive compensation with equity
• 12.5 Company-wide Holidays
• Flexible vacation days
• 10 sick days
• Generous parental leave policy
• Health, dental, and vision insurance
• 401(k) with employer matching
• Professional growth opportunities
• Team-building activities
What you'll do:
Assemble, operate, and maintain custom equipment used in the HTS pilot line and characterization lab
Perform mechanical and electrical troubleshooting across vacuum, thermal, and instrumentation systems
Support equipment integration, testing, and commissioning efforts in collaboration with engineers and vendors
Maintain lab infrastructure and ensure compliance with safety protocols and standard operating procedures
Conduct preventive maintenance on key systems such as roughing pumps, turbo pumps, and cryopumps
Perform helium leak checks and support upgrades to vacuum and process systems
Fabricate and repair cable harnesses, sensors, and custom fixturing
Use test equipment such as oscilloscopes and multimeters for diagnostics and data acquisition
Keep documentation up to date, including maintenance logs and equipment performance records
Contribute to lab cleanliness, organization, and continuous process improvements
What we’re looking for:
5+ years of experience supporting industrial, R&D, or manufacturing equipment
Strong hands-on skills with mechanical assembly and vacuum systems (HV/UHV)
Familiarity with vacuum technology principles and cleaning protocols for vacuum components
Experience servicing or refurbishing pumps (scroll, turbo, cryo)
Working knowledge of low- and high-voltage electrical systems and cable harness fabrication
Ability to troubleshoot electrical and instrumentation systems using common bench tools
Functional understanding of electrical codes and basic safety standards
Strong safety mindset and experience working under OSHA and LOTO protocols
Comfortable working with appropriate PPE around fumes, noise, and other lab hazards
Bonus points for:
Experience working in pilot-scale or production-line environments
Knowledge of plumbing systems, cryogenics, or thermal control systems
Proficiency using lab management tools, maintenance tracking systems, or basic CAD
Must-have Requirements:
Ability to occasionally lift up to 50 lbs
Perform activities such as stooping, climbing, standing, or sitting for extended periods of time
Dedication to safety to mitigate industrial hazards that may include heat, cold, noise, fumes, strong magnets, lead (Pb), high voltage, and cryogenics
Willingness to travel or work required nights/weekends/on-call occasionally
#LI-Onsite
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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