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Zipline

Robot type
Drone
Location
South San FranciscoCaliforniaUSA
Job type
Manufacturing
Posted
Jul 15, 2026
Salary
$130,000–$180,000 a year
Full-time

Senior Motor Test Engineer - Powertrain

Job description

Our customers include the world’s largest and most prominent healthcare systems, governments, retailers, restaurants and global businesses who rely on us to save lives, reduce emissions, increase economic opportunity, and provide delivery from point A to point B as fast as possible. The drone is only 15% of what we’ve built to enable seamless, reliable, global operations.

Our system strengthens supply chains, reduces congestion, and gives people time back. With more than 140 million commercial autonomous miles safely flown, Zipline is redefining access to healthcare, consumer products, and food across the globe.

We operate at a global scale and are looking for practical problem solvers who…

Job responsibilities

  • Conduct full electromechanical characterization of BLDC motors including loss characterization, thermal coefficient extraction, and demagnetization testing
  • Evaluate propulsion systems (motor + inverter + propeller) for thrust, efficiency, and thermal behavior across the full operational envelope
  • Test servo and motor-based actuators for positional accuracy, losses, holding torque, and closed-loop dynamic response
  • Define and own test specifications covering efficiency maps, thermal performance, torque-speed curves, cogging, back-EMF, and endurance
  • Perform root cause analysis on field failures and correlate back to test data to close the loop between lab and flight
  • Own the full performance and reliability test campaign for your hardware - you are the go-to person to understand how a part will perform in the field, and when the hardware is pushed to its limits.
  • Characterize wear-out mechanisms for complex actuator and propeller subassemblies, subject to billions of damage cycles per lifetime.
  • Develop novel ways for validating motor and structural models and FEA validation.

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