Senior Mechanical Engineer - Vacuum Systems

Location: Fremont, California, United States; onsite commissioning of vacuum equipment and systems is required.

Pay range: $138,100–$219,900 USD per year, plus equity and benefits.

Company

hirify.global is a fusion-energy startup developing pulser-driven inertial fusion systems and components intended to deliver abundant, affordable, clean energy.

What you will do

• Design, analyze, and test advanced vacuum systems for target-area chambers and diagnostics.
• Select and size pumps, seals, ducts, valves, and other vacuum components for particle-free cryogenic environments.
• Lead engineering activities from concept development through prototyping, testing, and onsite commissioning.
• Support high-voltage electrical switching operations and testing inside vacuum chambers.
• Run experiments to characterize material outgassing, permeability, and vacuum compatibility.
• Resolve field issues and negotiate vacuum-system design requirements with multidisciplinary teams.

Requirements

• Bachelor’s degree in Mechanical Engineering, Aerospace Engineering, or a related field, or at least 10 years of specialized senior technician experience with system design, independent testing, and complex troubleshooting.
• Proven expertise in the design, analysis, and construction of high-vacuum systems.
• Hands-on experience with vacuum chambers, pumps, seals, valves, ducts, and cleanroom techniques.
• Experience integrating electrical testing with vacuum and pressurized systems.
• Familiarity with ASME BPVC and B31.3 codes.
• Experience with radioactive or toxic gas vacuum systems, novel vacuum pumps, or material characterization is valued.

Nice to have

• Master’s degree or PhD.
• Experience setting up wiring, circuits, and control systems and diagnosing electrical malfunctions with testing tools.
• Machining and CAD design experience, including Creo.

Culture & Benefits

• Equity plan for eligible employees.
• 6% employer 401(k) matching.
• Paid time off, including sick leave, vacation, and paid family leave.
• Medical, dental, and vision insurance.
• Work with scientists, engineers, and operators from the fusion and hard-tech communities on clean-energy technology.