Senior Mechanical Engineer – Cable Magnets
Commonwealth Fusion SystemsDevens, MA
Full Time
Posted August 20, 2026
$110k - $185k
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Job Description
About Commonwealth Fusion Systems:
Key Responsibilities
- Act autonomously as the primary owner of cable magnet hardware for SPARC, ARC, or other projects, ensuring designs are completed, validated, procured, built, and installed correctly and on time
- Produce new and iterate on existing design concepts, using a deep understanding of physics, structural mechanics, and analysis techniques for both metallics and composites
- Liaise with partner teams such as R&D, analysis, manufacturing, and procurement to drive completion of program milestones in a timely fashion
- Diagnose issues on the production and assembly line and provide immediate path forward based on known understanding of hardware. Propose and implement design solutions based on root cause
- Prepare reports, presentations, and other documentation to serve as design documentation and validation of final Cable Magnet systems
- Mentor junior engineers and assist in establishing and implementing engineering best practices
Requirements
- Bachelor’s degree in mechanical engineering, aerospace engineering, or another relevant field
- A minimum of 7 years of engineering design and analysis experience is required, including at least 2 years providing engineering support to production hardware in the form of resolving technical issues and implementing design for manufacturing or assembly changes
- Relevant hands-on experience in the form of parts designed for high loads and/or extreme environments
- Excellent fundamental knowledge of mechanical systems such as static structures and heat transfer (required) Familiarity with all steps in the design process with an emphasis on creativity, simplicity, and execution (required)
- Be self-motivated, committed to self-growth, and exhibit excellent problem-solving skills (required)
- CAD proficiency (required) NX preferred, any acceptable
- FEA (required) ANSYS and COMSOL preferred
- Expertise in AMSE Y14 GD&T principles (preferred)
- Perform activities such as 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
- Perform activities such as sitting for extended periods of time
- Occasional travel, occasional nights/weekends/on-call
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