Propulsion Test Engineer (Hybrid-Electric)

Location: Los Angeles, CA; Dynamic Propulsion team based in Torrance, CA

Salary: $124,000–$216,000 USD per year

Company

hirify.global develops the ES-30, a 30-passenger regional hybrid-electric aircraft targeting type certification by the end of the decade.

What you will do

• Lead and execute system-level testing of electric motors, inverters, gearboxes, disconnect systems, propellers, and integrated powertrain subsystems.
• Design and commission hybrid-electric propulsion test stands, hardware-in-the-loop systems, and digital twins.
• Develop instrumentation, safety systems, control systems, and data acquisition setups for propulsion testing.
• Plan, execute, and document test campaigns covering performance, safety, environmental conditions, endurance, fault injection, and certification compliance.
• Coordinate with mechanical, thermal, propulsion, actuation, avionics, battery, supplier, and external laboratory teams.
• Analyze test data, prepare reports, diagnose performance and failure modes, and provide feedback to design teams.

Requirements

• At least 2 years of professional experience in powertrain, propulsion, or test engineering, preferably with electric or hybrid-electric systems.
• Hands-on experience designing and operating propulsion or powertrain test stands with complex instrumentation and controls.
• Strong understanding of electric motors, inverters, batteries, and thermal management systems.
• Experience with data acquisition systems such as dSPACE, NI, or Dewesoft, plus current/voltage sensors, thermocouples, and strain gauges.
• Experience developing automated test procedures and control scripts using Python, LabVIEW, or similar tools.
• Bachelor’s or Master’s degree in Mechanical, Electrical, Aerospace Engineering, or a related field, with knowledge of high-voltage safety procedures.

Nice to have

• Familiarity with EASA CS-23/25 or FAA FAR Part 23/25 certification requirements.
• Experience with DO-160 or MIL-STD environmental test standards.
• Experience with root cause analysis, DFMEA, and fault tree analysis.
• Background in hybrid propulsion systems or aerospace propulsion integration.

Culture & Benefits

• Cross-functional work across aircraft propulsion, batteries, avionics, actuation, mechanical, and thermal engineering.
• Collaboration with suppliers and external testing laboratories.
• Hands-on involvement in developing and certifying a regional hybrid-electric aircraft.