Senior Field Mechanical Engineer - Assembly - Second Shift
EngineeringMechanical Engineer
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Quick Summary
Overview
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,
Technical Tools
EngineeringMechanical Engineer
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 Senior Field Mechanical Engineer - Assembly
As the Senior Field Mechanical Engineer on the Assembly Team at CFS, you will be responsible for the management, engineering oversight, and problem-solving of the most complex and unique work-stations of the SPARC assembly process. You will be the central owner and know your part of the assembly process through-and-through, and you help guide the technicians through any issues that arise along the way, coming up with solutions that continue work and assembly moving forward. You will proactively ensure that they have all the tools required for the work, either procuring them off-the-shelf or quickly designing and building small tools and fixtures for use. This also includes the close collaboration with adjacent teams on the Assembly Team, such as creating and incorporating the new process changes with the Assembly Process team, or providing the Metrology team with any assistance or tools needed for the precision alignment of coils and other key structures. This role is on-site at Devens, MA but is a “field” role in the sense that you will be working day-to-day in the central construction hall in the CFS-2 facility where we are building the SPARC Tokamak. At the core, your role is to keep the assembly process moving smoothly in any and all ways, managing the day-to-day changes in strategy or work orders, problem-solving and making tools, and using your engineering skills and knowledge to solve the many complex challenges that arise during the assembly process. You will guide and manage how the giant parts of this multi-million pound “Swiss-watch” come together!
This particular role is scoped to be third shift focused for the duration of the SPARC Tokamak build project.
Hours: 3:00 pm - 1:00 am
Salary + 10% differential
Lifting operations experience
Knowledge of welding
Knowledge of piping and tubing construction and joining
Experience with highly complex or delicate assemblies
Experience with assembly or integration in tightly packaged spaces
Experience with fast-paced and dynamic construction, manufacturing, or assembly/integration builds
Design of simple yet sizeable alignment and positioning fixtures
Heavy component manipulation and welding of large structures
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.
Location & Eligibility
Where is the job
Devens, United States
On-site at the office
Who can apply
US
Listing Details
- Posted
- September 23, 2026
- First seen
- September 24, 2026
- Last seen
- October 2, 2026
Posting Health
- Days active
- 7
- Repost count
- 0
- Trust Level
- 56%
- Scored at
- October 2, 2026
Signal breakdown
freshnesssource trustcontent trustemployer trust
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