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Lead Assembly Technician Third Shift

Commonwealth Fusion Systems

Job Location:

Devens, MA - USA

Monthly Salary: $ 32 - 52

Posted: 5 June 2026 (30+ days ago)

Application Deadline: 2 September 2026

Vacancies: 1 Vacancy

Job Summary

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 were designing and building commercially viable fusion power plants. And were working with policymakers and suppliers to build the energy industry of the future.

Were in the best position to make it happen. Since 2018 weve raised nearly $3 billion in capital making us the largest and leading private fusion company in the world.

Now were looking for more thinkers doers builders and makers to join us. People wholl bring new perspectives solve tough problems and thrive as part of a team.

If thats you and this role fits we want to hear from you.

Join the power movement as Lead Technician

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!

Hours: 11:00 pm - 7:30 am

15% differential

What youll 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 were 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

$32 - $52 an hour

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

#LI-Onsite

At CFS we excel in fast-paced environments driven by our values of integrity execution impact and self-critique. As we grow were 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.

Required Experience:

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