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  3. Senior Field Mechanical Engineer - Assembly
Commonwealth Fusion Systems logo

Senior Field Mechanical Engineer - Assembly

Commonwealth Fusion Systems
Devens, MA
Full Time
Posted April 15, 2026
$110k - $185k
Power Generation
~60 people viewed this recently
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Application opens on company website

Job Description

About Commonwealth Fusion Systems:

Key Responsibilities

• Own and be the expert in the assembly sequence of your workstation (initially this role is scoped to the assembly of the Toroidal Field Coil (TF) semicircle sub-assemblies), with the responsibility to determine and enact acceptable solutions and changes to the sequence that both allow successful completion of the work-station but also fit with the entire SPARC assembly sequence • Be responsible for new first-encounter work scope definition including the installation of various manifolds and magnet sub-assemblies • Determine and execute solutions for identified assembly issues that arise, such as fit, method, or component handling problems. Work with the Tokamak System design teams to determine how a part or process step could be modified to work while also meeting functional requirements • Proactively procure or build all tools, fixtures, or manipulation equipment required for the upcoming ports of the process in your workstation • Serve as the extreme owner for a process by testing, implementing, and handing off to production technicians for repeated use for any given operation or tool(s) • Provide design feedback to SPARC sub-system designs with a focus on manufacturing and assembly. Participate in both formal and informal design reviews to ensure what is delivered can be assembled • Assist in the disposition and resolution of non-conformance issues on parts or the process, then working to incorporate and release red-line changes into an updated assembly sequence. • Support hands on operations during Tokamak Assembly serving a variety of roles in the process • Work with teammates in a collaborative fashion to receive feedback early and often to ensure all requirements are met. Many SPARC projects involve high loads, vacuum requirements, and complex manipulation requiring the involvement and review of adjacent sub system experts

Requirements

• Ability to occasionally lift up to 50 lbs • Perform activities such as typing, standing, stooping, climbing or sitting for extended periods of time • Required onsite 5 days/week when assembly operations with relevant tools are underway, with possible first or second shift assignment • 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

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