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Lead Technician, Assembly Testing
Job Location:
Job Location:
Devens, MA - USA
Hourly Salary:
USD 36 - 41
Hourly Salary:
Posted:
29 September 2026 (6 days ago)
Posted:
Application Deadline:
27 December 2026
Application Deadline:
Vacancies:
1 Vacancy
Vacancies:
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 suppliers and many others to build the energy industry of the future.
Were in the best position to make it happen. Since 2018 weve raised $4 billion of capital making us the largest and leading 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 a Lead Technician Assembly Testing
The Mechanical Commissioning Field Lead is responsible for leading a small team (2-3 technicians) in the execution of SASY testing activities under the direction the Manger of Assembly Testing with guidance and support from Test activities may also include assembly activities as testing will take place in parallel with SPARC lead technician will have daily hands-on responsibilities
What youll do:
- Execute complex testing procedures in the field with a primary focus on mechanical testing to include pneumatic pressure proofing and leak detection using helium leak detector.
- Work under the direction of Manager Assembly Testing to execute test procedures
- Serve as front line supervisor for test technicians by providing guidance and instruction to technicians to facilitate safe effective and efficient execution of work
- Identify issues and potential issues pro-actively ensure accurate submission to our work and quality management systems and assist to drive issues to successful conclusions
- Ensure completion of all test documentation in an accurate and timely fashion
- Coach technicians to embody the CFS behaviors and guiding principles in all interactions
- Represent the SASY Test team in collaboration with all CFS cross-functional teams as required
- Adhere to the highest standards of safety and ensure that activities taking place are being performed in accordance with CFS safety policies and applicable regulatory safety standards
What were looking for:
- HS Diploma
- Minimum 5 years of hands-on mechanical testing experience with a heavy focus on pneumatic pressure proofing and helium leak detection using mass spectrometers.
- Proven experience leading small to medium-sized crews of technicians performing complex mechanical or testing activities.
- Demonstrated experience with high-vacuum hardware: Must be proficient in plumbing temporary test fixtures and making connections using KF CF VCR compression fittings and NPT.
- Familiarity with setting up and connecting vacuum systems including turbomolecular pumps and leak detectors.
- Mid-level proficiency in with Microsoft or Google productivity software
Bonus points for:
- Formal training (40 hours) or active progression toward an ASNT Level II NDT certification in Leak Testing.
- Direct experience with specific leak testing methodologies (e.g. tracer probe hood technique and helium-filled object techniques).
- Prior experience working in fusion-relevant aerospace or semiconductor cleanroom environments.
- Experience with low or high voltage electrical testing
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
$36 - $41 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:
IC
