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Pacific Fusion, founded in 2023 and backed by over $900M in funding, is building a pulser-driven inertial fusion system to achieve net facility gain and develop affordable fusion energy solutions. This Senior Mechanical Engineer role is critical to the design, assembly, and integration of vacuum systems for the company's fusion technology platform.
You will design, analyze, and test advanced vacuum systems for target area chambers and diagnostics, selecting and sizing vacuum components including pumps, seals, ducts, and valves for particle-free cryogenic environments. Key responsibilities include leading technical and engineering activities from concept development through final onsite commissioning of vacuum equipment; supporting high-voltage electrical switching operations and testing in vacuum chambers; performing experiments to characterize materials for outgassing, permeability, and vacuum compatibility; and providing solutions to field issues related to vacuum system design and performance.
You'll engage in rapid prototyping for fusion applications and collaborate cross-functionally with multidisciplinary teams to educate and negotiate design requirements. This is a hands-on role combining deep technical expertise with system-level thinking in a mission-driven, fast-moving hard tech environment.
Required qualifications include a Bachelor's degree in Mechanical or Aerospace Engineering (Master's or PhD preferred), or minimum 10 years of specialized experience as a senior technician with demonstrated responsibilities in system design, independent testing, and complex troubleshooting. You must have proven expertise in high vacuum systems design, analysis, and construction; hands-on experience with vacuum components and clean room techniques; experience integrating electrical testing in vacuum and pressurized systems; familiarity with ASME BPVC and B31.3 codes; and ideally experience with radioactive or toxic gas vacuum systems or novel vacuum pump technologies.
