Staff Fluid Systems Engineer (Nuclear)

Location: 100% onsite at the El Segundo headquarters, United States

Salary: $158,000–$219,450 annually, plus equity

Company

hirify.global is a startup developing portable, factory-built nuclear microreactors, including the 1-megawatt Kaleidos reactor for rapidly deployable power.

What you will do

• Own fluid systems and components from preliminary design through manufacturing, assembly, testing, and production.
• Design and analyze primary-loop subsystems, power-conversion systems, compressors, valves, heat exchangers, and piping.
• Perform thermal, fluid, structural, first-principles, and finite element analyses to guide design decisions and verify performance.
• Run trade studies, manage bills of materials, select suppliers, and coordinate subassembly manufacturing and test schedules.
• Develop manufacturing instructions, test plans, subsystem FMEA, and requirements for production hardware.
• Collaborate with multidisciplinary engineering teams through clear technical communication.

Requirements

• Bachelor’s degree in Mechanical, Materials, Aeronautical, Civil, or Structural Engineering.
• 8+ years of experience designing, building, and testing fluid systems.
• Experience with fluid system architecture design, fluid dynamics, and thermodynamics.
• Proficient knowledge of heat exchanger design and analysis methods.
• Willingness to work 100% onsite in El Segundo and extended hours or weekends when necessary.

Nice to have

• Knowledge of thermodynamic power cycles and thermal-growth piping design using hand calculations and FEA.
• Experience with ASME B31.3 and ASME PCC-2 process piping design and testing codes.
• Experience modeling fluid systems with MATLAB or Python.
• Experience with design for manufacturability, production ramp-up, test stands, and multidisciplinary hardware development.
• Nuclear experience is not required.

Culture & Benefits

• Full-time employees receive a substantial incentive stock plan.
• Medical, vision, dental, FSA/HSA, commuter, life, accident, hospital, and critical illness benefits are available.
• Eight weeks of paid parental leave for all parents, plus additional paid pregnancy leave for California employees.
• Flexible PTO, catered daily lunch, snacks, drinks, and sponsored One Medical memberships.
• Company events, team-bonding activities, and in-person collaboration at the El Segundo headquarters.