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Principal Mechanical Engineer: Fusion R&D Systems & Equity

Job in Milpitas, Santa Clara County, California, 95035, USA
Listing for: Commonwealth Fusion
Full Time position
Listed on 2026-07-17
Job specializations:
  • Engineering
    Systems Engineer
Salary/Wage Range or Industry Benchmark: 150000 - 225000 USD Yearly USD 150000.00 225000.00 YEAR
Job Description & How to Apply Below

Commonwealth Fusion Systems is seeking a Principal Mechanical Engineer to lead design, integration, and validation of advanced R&D equipment for thin-film processing. You will drive system architecture, mentor engineers, and ensure on-time, in-spec delivery of complex hardware.

The role requires 15+ years of experience in complex R&D or semiconductor tooling, expert 3D modeling, and strong collaboration with scientists, vacuum specialists, and electrical engineers in a fast-paced environment.

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