Senior Thermo Mechanical Engineer

Location: Onsite five days a week in San Francisco, California; travel to the Reno factory during builds is required at approximately 20% for 1–2 months per year. No hybrid or remote options.

Company

hirify.global develops software-defined power infrastructure systems using advanced power electronics, embedded controls, scalable energy architectures, and in-house manufacturing for data centers, EV charging platforms, and future energy applications.

What you will do

• Develop the thermal system for a medium-voltage solid-state power conversion platform from architecture and concept selection through mass production.
• Model thermal performance across operating conditions and mission profiles.
• Design thermal system components, coolant routing, interconnections, and structures using 3D and 2D CAD.
• Perform thermal CFD simulations and solve problems from architecture through start of production.
• Partner with manufacturing and quality teams on design-for-manufacturing and design-for-assembly activities.
• Prototype, test, validate, and troubleshoot the thermal system.

Requirements

• 3+ years of experience for Senior level or 6+ years for Staff level.
• BS in mechanical engineering or a closely related field.
• Experience with liquid-cooling thermal systems and mechanical design.
• CAE expertise and experience delivering thermal systems.
• Experience with compressor-loop refrigeration systems.
• Demonstrated ability to solve novel engineering problems.
• Hands-on testing and validation experience.

Nice to have

• Experience with Catia 3DX.
• Experience with Siemens Amesim or a similar tool.
• Familiarity with high-voltage design.
• Master’s degree or PhD.

Culture & Benefits

• High ownership and visibility in a fast-moving startup environment.
• Cross-functional collaboration across mechanical, electrical, manufacturing, quality, supplier, and factory teams.
• Opportunity to shape next-generation power infrastructure products.
• For US employees: medical, vision, dental, life and disability insurance, 401(k), paid time off, sick days, company holidays, commuter benefits, and paid parental leave.
• Competitive salary and incentive stock options; additional benefits depend on role and employment type.