Staff Turbomachinery Engineer (Nuclear Energy)

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

Salary: $200,500–$314,475 per year, plus equity.

Company

hirify.global builds mass-produced, transportable nuclear microreactors, including the 1 MW Kaleidos reactor for critical infrastructure, remote sites, and commercial applications.

What you will do

• Serve as the Responsible Engineer for the turbomachinery mechanical system and own the architecture of rotating assemblies operating at up to approximately 30 krpm.
• Lead rotor dynamics, structural integrity, life analysis, detailed component design, and requirements flowdown for rotors, shafts, housings, bearings, seals, materials, and clearances.
• Define tolerances, fits, stack-ups, alignment strategies, and interfaces across turbine, compressor, alternator, electrical, thermal, manufacturing, and test subsystems.
• Lead rotordynamic testing, model correlation, spin and thermal testing, system validation, and performance verification.
• Support hardware assembly, integration, bring-up, troubleshooting, root-cause analysis, and design iteration.
• Provide technical guidance, conduct design reviews, engage suppliers, and influence engineering direction without direct people-management responsibility.

Requirements

• Bachelor’s degree in Mechanical Engineering or a related field.
• 8+ years of experience designing high-speed rotating machinery such as turbines, compressors, or similar systems.
• Deep expertise in turbomachinery mechanical design and structural analysis, including bearings, seals, and high-speed shafting.
• Expert-level proficiency with analysis tools such as ANSYS and advanced use of NX and Teamcenter for complex design, simulation, and product lifecycle management.
• Strong understanding of tolerancing, GD&T, precision mechanical assembly, and system-level mechanical design.
• Experience owning hardware through design, build, and test cycles, including hands-on assembly, integration, and troubleshooting.
• Strong engineering judgment, mechanical intuition, communication skills, accountability, and ability to influence cross-functional teams without authority.
• Ability to work effectively in a fast-paced, first-of-a-kind development environment and work extended hours and weekends as necessary.

Nice to have

• Master’s degree or Ph.D. in Mechanical Engineering.
• Experience with closed-loop Brayton-cycle or similar energy systems.
• Familiarity with high-temperature materials and extreme-environment design.
• Experience integrating mechanical systems with high-speed electric machines.
• Previous responsibility as the Responsible Engineer for complex hardware.
• Experience scaling hardware from prototype to production.

Culture & Benefits

• Full-time employees receive substantial equity incentives and comprehensive medical, dental, vision, life, accident, hospital, critical illness, commuter, FSA, and HSA options.
• Flexible PTO, eight weeks of paid parental leave for all parents, and additional paid pregnancy leave for California employees.
• Sponsored One Medical memberships and daily catered lunch, snacks, and drinks.
• Nuclear Engineering Certificate Program with Penn State University is fully covered for eligible employees.
• In-person team events, company events, and an onsite headquarters near the Pacific Ocean.
• Remote workday allocation is available, but this position remains 100% onsite; the role may involve extended hours and weekends.

Hiring process

• Applicants may contact recruiting@hirify.globalnuclear.com directly for immediate opportunities.
• Any offer is contingent on the applicant’s capacity to serve in compliance with U.S. export controls because the position involves access to controlled technology.