Senior Mechanical Engineer (Fusion)

Location: Fremont, CA, United States

Salary: $138,100–$263,800 USD per year

Company

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

What you will do

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

Requirements

• Bachelor’s degree in Mechanical Engineering.
• 5+ years of Mechanical Engineering experience, preferably with complex multidisciplinary systems.
• Proficiency with CAD software such as Creo, SolidWorks, or equivalent, with strong 3D modeling practices.
• Experience with Finite Element Analysis for structural, thermal, or dynamic applications.
• Experience taking mechanical designs from concept through fabrication and test.
• Strong understanding of manufacturing processes, design for manufacturability, laboratory or prototype work, and the ability to mentor junior engineers.

Nice to have

• 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.
• Master’s degree or PhD.

Culture & Benefits

• Equity plan.
• 6% employer 401(k) matching.
• Paid time off, including sick leave, vacation, and paid family leave.
• Medical, dental, and vision insurance.
• Collaborative work across fusion science, engineering, manufacturing, and operations disciplines.