Senior Mechanical Engineer - Assembly Equipment
Commonwealth Fusion SystemsDevens, MA
Full Time
Posted August 19, 2026
$110k - $185k
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Job Description
About Commonwealth Fusion Systems:
Key Responsibilities
- Ownership, design, and complete engineering development of the tooling, lifting, manipulation, and support frames for successful movement, handling, guidance, and integration of SPARC system components.
- Formulate the general strategy for each assembly step utilizing these tools, as well active coordination and guidance of the system teams during parallel design activities for optimum assembly logic, steps, best practices, methods, strategies, and other details.
- Analysis of the tool structures and kinematics to ensure that the tool can adequately and safely conduct the movement or support as designed.
- Within the plan development, ensuring tool and personnel access is available as required for system assembly steps as outlined by the system owners.
- Assist development for the alignment plan for precision placement for magnet and vessels by providing tools for successful handling and manipulation of parts to meet alignment requirements.
- Responsible for the plans for part movement at each step and ensuring no interferences with other systems during movement.
- Oversight over fabrication of the tools at outside vendor shops, with guidance and troubleshooting to ensure the tool is built to the specifications required.
- Specification and procurement of all purchased hardware required for the tools.
- Responsible for the assembly work instruction packets for each tool, to be used during the assembly phase of SPARC, as well as the assembly, proofing, and activation of the tools in your ownership on-site.
- Work with other tooling engineers, designers, and assembly package coordinators, as well as direct personnel performing the Tokamak Assembly during on-site work in the use of your tool and related assembly step.
- 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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