Lead, Test Engineering (Nuclear)

Location: 100% onsite at the El Segundo, California headquarters, with extended hours and weekends as necessary.

Salary: $140,500–$202,475 per year, plus equity.

Company

hirify.global develops mass-produced, transportable nuclear microreactors. Its Kaleidos reactor is a 1 MW product designed for deployment at critical infrastructure, remote sites, and commercial locations.

What you will do

• Own test strategy and execution across development, qualification, and production acceptance for Kaleidos hardware and systems.
• Lead the design, construction, commissioning, calibration, and maintenance of test rigs, fixtures, instrumentation, data acquisition, controls, and support systems.
• Build test capabilities for thermal, materials, mechanical, structural, leak, flow, environmental, transient, off-nominal, and endurance testing.
• Establish operating procedures, safety controls, facility readiness, measurement traceability, uncertainty analysis, and test documentation standards.
• Analyze test data, correlate results with analytical predictions, investigate anomalies and failures, and drive corrective actions with design and analysis teams.
• Lead and mentor test engineers and technicians while coordinating with design, manufacturing, quality, supply chain, and operations.

Requirements

• Bachelor’s or Master’s degree in Mechanical Engineering or a related field, or equivalent experience.
• 8+ years of experience in testing, development, or validation of complex mechanical, thermal, or electromechanical systems.
• Hands-on experience building and operating test setups for high-energy or high-temperature hardware.
• Experience designing test instrumentation and data acquisition systems and analyzing test data.
• Experience with leak testing methods, including helium leak detection and pressure decay, plus flow and thermal test setups.
• Experience correlating test results with analytical predictions and design intent.
• Demonstrated technical leadership and ability to drive complex test efforts to completion.
• Strong written, verbal, and organizational skills.
• Must work 100% onsite at El Segundo HQ and be willing to work extended hours and weekends as necessary.

Nice to have

• Prior management of test engineers or technicians and experience developing a test facility or test stand from the ground up.
• Experience with safety reviews and hazard analysis, including JHA, HAZOP, or FMEA, and hazardous-gas handling.
• Experience testing rotating turbomachinery, heat exchangers, fluid systems, mechanisms, or controls.
• Experience with structural test methods, strain gauges, load cells, and test-to-FEA correlation.
• Experience with LabVIEW, Python, MATLAB, Beckhoff hardware, or PLCs for data acquisition and analysis.
• Familiarity with API, ASME, ISO, ASTM, ISO 17025, ASME BPVC, measurement uncertainty, pressure vessel, and pressure system testing practices.
• Experience in nuclear, aerospace, defense, regulated, or other high-reliability environments, as well as startup or fast-paced hardware development.
• Prior nuclear experience is not required.

Culture & Benefits

• Full-time employment with substantial incentive stock, comprehensive medical, dental, and vision coverage, and voluntary life, accident, hospital, critical illness, commuter, FSA, and HSA benefits.
• Flexible PTO, eight weeks of paid parental leave for all parents, and additional paid pregnancy leave for California employees.
• Fully onsite work at the El Segundo headquarters, with a remote workday allocation and in-person team events.
• Sponsored One Medical memberships, daily catered lunch, snacks, and drinks.
• Eligible employees receive full coverage for a nuclear engineering certificate program through Penn State University.

Hiring process

• Compensation and level are determined through evaluation of interview performance, experience, education, and qualifications.
• Applicants may contact hirify.global directly at recruiting@hirify.globalnuclear.com for immediate opportunities.
• Any offer is contingent on the applicant’s ability to comply with U.S. export controls because the position involves controlled technology.