Propulsion Transmission Engineer

Heartaerospace

At Heart Aerospace we develop the ES-30, a regional hybrid-electric airplane with a capacity of 30 passengers, an electric zero-emission range of 200 km and an extended hybrid range of 400 km. Heart is targeting type certification of the ES-30 by the end of the decade. Your Mission We are seeking a Propulsion Engineer to join our Dynamic Propulsion team in Torrance, CA. You will lead the testing, validation and certification of the aircraft’s hybrid-electric powertrain system. You will also interface across mechanical, thermal, propulsion, actuation, avionics, and battery teams to develop, execute, and analyze integrated system-level tests of the Electric Propulsion Unit (EPU) and its subsystems. Key responsibilities include but are not limited to: * Lead and execute system-level powertrain testing, including electric motor, inverter, gearbox, disconnect systems, and propeller subsystems. * Design and commission hybrid-electric propulsion test stands, HIL, and Digital Twin, including instrumentation, safety systems, control systems, and data acquisition. * Plan, execute, and document test campaigns to verify performance, safety, and certification compliance. * Collaborate with cross-functional teams to develop test procedures and test plans for integrated propulsion systems. * Coordinate with suppliers and external labs to support component and system-level testing. * Analyze test data, prepare reports, and provide feedback to design teams for iterative development. * Support environmental, endurance, fault-injection, and compliance testing for certification readiness. You'll Bring These Qualifications: * 2+ years of professional experience in powertrain, propulsion, or test engineering, with electric or ideally hybrid-electric systems. * Hands-on experience designing and operating powertrain or propulsion test stands with complex instrumentation and control. * Deep understanding of electric powertrains including motors, inverters, batteries, and thermal management systems. * Proficiency with data acquisition systems (e.g., dSPACE, NI, Dewesoft) and instrumentation (current/voltage sensors, thermocouples, strain gauges). * Experience developing automated test procedures and control scripts (e.g., Python, LabVIEW, or similar). * Strong analytical skills in interpreting test data and diagnosing system performance and failure modes. * Understanding of high voltage safety standards and procedures for testing environments. These Qualifications Would Be Nice to Have: * Familiarity with aerospace certification requirements (EASA CS-23/25 or FAA FAR Part 23/25). * Experience with DO-160 or MIL-STD environmental test standards. * Experience with root cause analysis and tools such as DFMEA and fault tree analysis. * Background in hybrid propulsion systems or aerospace propulsion integration. Education: * Bachelor’s or Master’s degree in Mechanical, Electrical, Aerospace Engineering, or related fields. Base Pay Range:  $124,000—$216,000 USD

Heartaerospace

At Heart Aerospace we develop the ES-30, a regional hybrid-electric airplane with a capacity of 30 passengers, an electric zero-emission range of 200 km and an extended hybrid range of 400 km. Heart is targeting type certification of the ES-30 by the end of the decade. Your mission We are seeking a highly motivated Electric Motor Design Engineer to join our Propulsion team. You will lead the design and development of the HV electric motors for our aircraft’s hybrid propulsion. You will interface across mechanical, thermal, power electronics, airframe, and battery teams to deliver a fully integrated and certifiable hybrid Electric Propulsion Unit (EPU). Key responsibilities include but are not limited to: * Design, develop, commission, and certificate innovative cutting-edge electric motors for hybrid propulsion system. * Lead and execute system-level tests, such as motor and propeller test stands. * Collaborate with suppliers to ensure delivery of integrated, and certifiable subsystems. * Perform avionics-optimized electric motor topology trade studies. * Create 2D/3D CAD models of electric motors in drawing tools (e.g., Siemens NX). You'll Bring These Qualifications: * 2+ years of professional experience designing high voltage, high power electric motors. * In depth understanding of permanent magnet motor design, principles, modeling, and analysis techniques. * Proficiency with JMAG, Ansys Maxwell, RMxpert, or MotorCAD. * Design and optimize electromagnetic active parts for manufacturing and certification. * Hands-on experience with integration of propulsion and/or powertrain test stands, including instrumentation, controls, and mechanical assembly. * Strong understanding of electric motors manufacturing processes such as stator winding, lamination stacking, and stator varnishing. * Strong knowledge of motor manufacturing, heat treatment, statics, dynamics and mechanics of materials. These Qualifications Would Be Nice to Have: * Understanding of certification requirements (EASA CS-23/25 or FAA FAR Part 23/25). * Knowledge of aerospace airworthiness standards, e.g. DO-254, and DO-160. * Develop and maintain design failure mode and effects analysis (DFMEA). Education: * Master’s or PhD degree in Mechanical, or Electrical Engineering or related fields. Base Pay Range:  $124,000—$216,000 USD

Heartaerospace

At Heart Aerospace we develop the ES-30, a regional hybrid-electric airplane with a capacity of 30 passengers, an electric zero-emission range of 200 km and an extended hybrid range of 400 km. Heart is targeting type certification of the ES-30 by the end of the decade. Your mission We are seeking a highly motivated Power Electronics Engineer to join our Propulsion team. You will lead the design and integration of the hybrid propulsion, including but not limited to the inverters, motors, HV cables, with batteries, and in parallel with Turbomachinery. You will interface across mechanical, thermal, electrical, and flight control systems to deliver a fully integrated and certifiable hybrid Electric Propulsion Unit (EPU). Key responsibilities include but are not limited to: * This role is a Responsible Engineer (RE) who focuses on the integration of power electronics and high voltage electrical systems into our hybrid aircraft. * Full ownership over design, fabrication, commissioning, and certification of the hybrid propulsion system. * Lead and execute system-level tests, such as motor and propeller test stands. * Collaborate with suppliers to ensure delivery of integrated, certifiable subsystems. * Model the electrical and power electronics systems in to our high fidelity Digital Twin for optimization of our hybrid mission profile. * Perform topology selection trade studies. You'll Bring These Qualifications: * 2+ years of professional experience working with power electronics components. * Strong experience in high voltage power electronics design (+800V) including AC/DC inverters, and DC/DC converters. * Strong understanding of HV filter design, grounding analysis, coordination of protective devices. * Hands-on experience with integration of propulsion and/or powertrain test stands, including instrumentation, controls, and mechanical assembly. * Extensive experience with Altium/cadence/similar), circuit analysis (spice), gate driver design, and lab work (common tools like oscilloscopes, network analyzers) * Experience with C/C++, Python, Matlab/Simulink, or PLECS. * Strong knowledge of Avionics communication, ARINC, CAN, and Ethernet. * Strong understanding of Microcontrollers, Multicore processors, Firmware Development, and digital power conversion. These Qualifications Would Be Nice to Have: * Understanding of certification requirements (EASA CS-23/25 or FAA FAR Part 23/25). * Knowledge of hardware design and airworthiness DO-178C, DO-254, DO-160. * Demonstrated leadership qualities through cross-functional teamwork on challenging problems. * Working knowledge of EMI/EMC, underlying physics and specifications, along with best practices for design, and strategies. * Hands on experience with Matlab/Simulink Auto Code Generation. Education * Master’s or PhD degree in Electrical Engineering with focus on Power Electronics, or Power Systems. Base Pay Range: $124,000—$216,000 USD