Overview
Joby Aviation is seeking a passionate, motivated and hands-on Senior Test Engineer on the Energy Storage and Distribution System (ESDS) Test Team to lead characterization, performance, environmental and reliability testing of the high-voltage electronics within the ESDS, including power distribution units, power conversion electronics (DC/DC converters), battery management system (BMS) hardware, contactors, fuses, current/voltage sensing circuits, and related PCBs. This role is a member of the Powertrain & Electronics Testing Team and leads the verification and validation testing activities for flight-critical HV electronics, with specific emphasis on electrical stress and abuse testing, HV insulation and isolation verification, electrical-thermal cycling, and Electromagnetic Effects testing (such as EMI/EMC, HIRF, and lightning-induced transients).
Responsibilities
Test preparation includes:
- Test engineering: Identify test objective(s), collaborate with electrical design engineers and system engineers to devise test matrices, instrumentation and measurement needs (voltage/current sensing, isolation monitoring, high-speed transient capture), and outline detailed test procedures such that results are repeatable and consistent
- Test article: Coordinate appropriate and configuration-controlled HV electronics test articles, power distribution and conversion hardware, BMS boards, contactors, fuses, special connectors, and PCBs, to meet test objective(s)
- Test equipment: Work closely with Test Equipment Design Engineers to have custom HV test rigs, battery emulators/cyclers, and programmable load setups built, assembled, operated, and maintained; define electrical requirements and expectations of the test stand/test setup, including HV interlocks, isolation barriers, and grounding/bonding schemes
- Lab integration: Aid in the integration and maintenance of various ESDS labs, including a complete aircraft representative battery lab and power distribution, power conversion, and BMS electronics labs, while strictly adhering to HV safety best practices, proper documentation, and safety awareness
Test execution includes:
- Perform electrical characterization, qualification, and reliability testing of ESDS HV electronics, including dielectric withstand (hipot), insulation resistance, contactor switching and fault-current interruption, bus transient/inrush characterization, and power/thermal cycling, plus environmental stress testing (thermal/humidity cycling, vibration and shock, accelerated life, and EMI/EMC, HIRF, and lightning effects)