Lead Technician - Assembly
Commonwealth Fusion Systems
Devens, MA, USA
USD 32-52 / hour + Equity
Posted on May 20, 2026
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 Lead Technician - Assembly
As a Lead Technician on the Assembly Team at CFS, you will be responsible for overseeing and organizing the small technician teams to conduct all assembly activities to construct the SPARC Tokamak. This includes the handling, alignment, and mechanical integration of large electromagnetic coils, vacuum vessels, instrumentation systems, support structures, tooling and manipulation equipment, diagnostic systems, and superconducting cable bundles, all together into a tightly packed and highly integrated central device. You will use your extensive experience in building and handling large equipment, structures, or plant systems to facilitate the efficient and high-quality completion of SPARC. You will organize the day-to-day work orders of the day per the schedule, assign technicians to each set of work, adjust as needed from previous work or issues, give morning briefs and shift hand-off reports, and overall guide all activity in the assembly work areas. During this you will work directly and collaboratively with the engineers, the metrology group, the quality group, and many other team-members to ensure correct and precise completion of the components and identify and help resolve issues as they arise during the build process. You will work with other technicians and leads, working in a dynamic and flexible workplace that shifts focus and priority as needed to meet the schedule to complete our next-generation tokamak device.
This role is truly a once in a lifetime opportunity to use your hands-on assembly skills to accelerate the development of fusion energy by ensuring SPARC is built on time and to high quality!
What you'll do:
- Day-to-day activity management and coordination of the technician teams to complete the assembly operations, per the overall schedule
- Work order review, including mechanical, welding, electrical, and lifting tasks
- Participation in major on-site operations, such as important component lifts and movements
- Inspection buy-off (visual confirmation only) for tasks completed by the technician teams
- Daily updates to the rest of the Assembly team on status of each operation or work orders and what was completed that day
- Assignment of each technician or technician team to specific operations and work orders, as needed for the schedule priorities determined by the planning
- Coordination with out-of-house work teams working on specialized sections of SPARC assembly when they arrive, ensuring that all teams can efficiently complete their work on time
- General troubleshooting of any issues with assembly as they arrive, and coming up with workarounds to problems, or elevating the issue as necessary. Assistance in all aspects that helps and keeps the technician teams moving forward as smoothly as possible
- Notification to Assembly Engineers of problems or need for non-conformance reports in a specific assembly Coordination with the Assembly Testing Team on their upcoming or ongoing activities, to ensure that each day all teams can efficiently and safely complete their work
- Daily kick-off meetings and shift-change meetings to outline what is being done that shift, which team is working on what, what the major important events (like big lifts) are that need to be communicated, safety hazards of the day, and all other details that will help the teams work efficiently and safely
What we’re looking for:
- High school diploma or equivalent experience
- 7+ years in a highly technical assembly role; e.g., aerospace/aircraft, semiconductor, oil & gas, power plants, wind, racing & automotive
- 2 to 3 years overseeing a team of five people or more
- Experience completing large scale projects end to end
- Experience assisting lifting operations
- Knowledge of standard joining and integration methods (bolted interfaces and flanges, welding, epoxies, etc.)
- Highly self-motivated, organized, and passionate about their work
- Highly safety conscious
Bonus points for:
- 10+ years in a highly technical assembly role; e.g., aerospace/aircraft, semiconductor, oil & gas, power plants, wind, racing & automotive
- 3+ years leading a team of ten people or more
- Can operate a forklift
- Ability to use basic machining tools; e.g., lathe/mill
- Experience creating designs for tooling
- Experience using JIRA, Manufacturo, or other software based tracking
- Experience with organizing rigging and direct oversight of heavy components lifting
- Knowledge of rigging and lifting best practice
- Knowledge of vacuum systems and clean room best practices
- Knowledge of cryogenic systems
- Prior experience in independent design and construction of small fixtures and tooling
- Experience with metrology tools and precision alignment of components
- Willingness to occasionally travel for required nights/weekends/on-call
- Dedication to safety
Must-have Requirements:
- Ability to occasionally lift up to 50 lbs
- Perform activities:
- Stooping, typing, standing, or sitting for extended periods of time
- May need to operate in small confined places in odd locations
- Work locations could include being on platforms around 25 feet high
- 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.
32 - 52 USD
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
• 13 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