Commonwealth Fusion Systems
Senior Mechanical Engineer
$146K–$210K
Milpitas, CA · On-site · Senior · Full-time · Posted Oct 16, 2026
- Experience
- 8+ years overall, including 7+ years as a senior mechanical design engineer or engineering team lead in a relevant context.
- Education
- Bachelor's degree in Mechanical Engineering or related field (or equivalent industrial experience).
- Visa sponsorship
- Offers are contingent on compliance with U.S. Export Control Laws.
About the job
Leads design and implementation of advanced R&D equipment and complex machinery for thin-film processing, coordinating across engineering teams to deliver safe, reliable equipment.
What you'll do
- Lead design and implementation of R&D equipment and mechanical subsystems; conduct design reviews and manage subsystem interfaces.
- Track and report project progress, collaborate across disciplines, and mentor engineering staff.
- Drive projects to deliver on time and to specification.
What they ask for
- Bachelor's degree in Mechanical Engineering or related field, or equivalent industrial experience.
- 8+ years of experience, including 7+ years as a senior mechanical design engineer or engineering team lead designing and implementing R&D systems and manufacturing equipment.
- Expertise with 3D modeling and experience with COMSOL, ANSYS or other FEA tools.
- Ability to qualify vendors, lead in direct or matrix structures, and meet the stated physical, safety, and occasional travel or schedule requirements.
Nice to have
- Preferred experience with SolidWorks and NX.
- Experience building first-of-kind or experimental tools for material science or semiconductor R&D; familiarity with listed mechanical standards or manufacturing equipment operation.
Pay
USD 146,000–210,000 per-year-salary; base salary
Tools
SolidWorks, NX, COMSOL, ANSYS, Semi-S8, ASME, ACI, ASTM
Model-written summary · the original posting is authoritative