Log inSign up free
  • Home
  • Jobs
    • Applications
    • Career
    • Resume
    • Cover letters
  • Content
    • Posts
    • Media
  • Messages
  • Analytics
    • Overview
    • Pages
  • Builder
    • Templates
  • More tools
    • Profile
    • Hiring
  • Settings
All jobs
CFCommonwealth Fusion Systems logo

Commonwealth Fusion Systems

Devens, MA

Lead Technician, Assembly Testing.

FULL TIMESENIOR LEVELPEOPLE & OPS
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, suppliers, and many others to build the energy industry of the future.
 
We’re in the best position to make it happen. Since 2018, we’ve raised $4 billion of capital, making us the largest and leading 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 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 Engineering. These activities may also include assembly activities, as testing will take place in parallel with SPARC assembly. The lead technician will have daily hands-on responsibilities
 
 

What you'll 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 we’re 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
#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.
Pay
Not stated
Where
Devens, MA
Work
Not stated
Type
Full time
Posted
26 Aug, 2026
Apply on the original postingSign in to apply

Verified board

more at Commonwealth Fusion Systems.

5 Oct, 2026

Commonwealth Fusion Systems

Welder - Differential Pay for Weekend & Night Shifts

CFCommonwealth Fusion Systems logo
  • Full time
  • People & Ops

Devens, MA

Full time

Details
22 Oct, 2026

Commonwealth Fusion Systems

Treasury and Tax Analyst

CFCommonwealth Fusion Systems logo
  • Full time
  • Finance & Legal

Devens, MA

Full time

Details
14 Oct, 2026

Commonwealth Fusion Systems

Techno-Economic Analyst

CFCommonwealth Fusion Systems logo
  • Full time
  • People & Ops

Devens, MA

Full time

Details

similar roles.

27 Oct, 2026

Erm

Environmental Consultant - Contaminated Site Assessment and Remediation

ERErm logo
  • People & Ops

Brisbane +1

Salary not listed

Details
27 Oct, 2026

Erm

Senior Consultant, Health and Safety

ERErm logo
  • Senior level
  • People & Ops

Dallas +2

Salary not listed

Details
30 Oct, 2026

Proxima Fusion GmbH

Risk and Change Manager - Alpha Delivery PMO

PFProxima Fusion GmbH logo
  • Full time
  • On-site
  • People & Ops

On-site

On-site

Details
30 Oct, 2026

Proxima Fusion GmbH

Production Scheduler

PFProxima Fusion GmbH logo
  • Full time
  • On-site
  • People & Ops

On-site

On-site

Details
27 Oct, 2026

MetOx International

Production Technician I (Night Shift)

MIMetOx International logo
  • People & Ops

Houston, TX

Salary not listed

Details
23 Oct, 2026

casavi

Office Manager (m/f/d) approx. 25 h/week

CAcasavi logo
  • Full time
  • People & Ops

München

Full time

Details