Senior Mechanical Engineer (Fusion Energy)

Location: San Leandro, CA, United States

Salary: $138,100–$207,100 USD base salary annually; total compensation also includes equity and benefits.

Company

hirify.global is developing a pulser-driven inertial fusion system intended to deliver abundant, affordable, clean energy and the components required for commercial fusion systems.

What you will do

• Develop mechanical designs for fusion-system hardware, including vacuum vessels, structural assemblies, diagnostics hardware, and experimental fixtures.
• Own design changes and components from concept through fabrication and testing.
• Perform stress, thermal, and dynamic mechanical analyses and validate designs against requirements.
• Work with vendors and manufacturers to deliver practical, cost-effective, manufacturable designs.
• Coordinate integrated system-level designs with plasma physics, pulsed power, electrical, software, and manufacturing engineering teams.
• Lead design reviews, documentation, risk assessments, and mitigation strategies while mentoring junior engineers.

Requirements

• Bachelor’s degree in Mechanical Engineering required; 5+ years of Mechanical Engineering experience, ideally involving complex multidisciplinary systems.
• Proficiency with CAD software such as Creo, SolidWorks, or an equivalent, including strong 3D modeling practices.
• Experience with Finite Element Analysis for structural, thermal, or dynamic applications.
• Demonstrated ability to take mechanical designs from concept through fabrication and testing.
• Strong understanding of manufacturing processes and design for manufacturability.
• Leadership skills and the ability to mentor and guide junior engineers.
• Hands-on laboratory or prototype experience, including comfort with rapid iteration and ambiguity.
• Strong written and verbal communication skills, including the ability to explain trade-offs across disciplines.
• Access to certain information or technology may be limited by U.S. export-control laws to U.S. Persons, including U.S. citizens, U.S. nationals, lawful permanent residents, and qualifying asylees or refugees.

Nice to have

• Master’s degree or PhD.
• Experience in fusion, plasma physics, accelerator physics, defense, or other high-consequence technical environments.
• Familiarity with vacuum systems, cryogenics, high-voltage hardware, or pulsed power components.
• Experience with large-scale structural systems, pressure vessels, or custom capital equipment.

Culture & Benefits

• Work on first-of-kind fusion technology focused on clean energy and climate-change mitigation.
• Collaborate across fusion science, hard-tech engineering, manufacturing, and operations disciplines.
• Industry-competitive base salary with an equity plan.
• 6% employer 401(k) matching.
• Paid time off including sick leave, vacation, and paid family leave, plus medical, dental, and vision insurance.