Zipline is the world’s largest and most experienced drone delivery service. We are on a mission to serve all humans equally by ensuring access to food, medicine and essential goods anytime, anywhere. We design, build, and operate the world’s largest autonomous logistics system, delivering critical supplies quickly and reliably. Today, Zipline operates on four continents, makes a delivery somewhere in the world every 30 seconds, and has completed millions of deliveries to date, including blood, vaccines, medical supplies, food, and retail products.
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 thrive on real-world challenges and rapid growth. Our team is motivated by building systems that have a direct, meaningful impact on people’s lives and by scaling the future of logistics. We are seeking people who sculpt from first principles, enjoy facing adversity, and can do the impossible at record breaking speeds.
Zipline’s aircraft rely on electric propulsion and actuation hardware that performs predictably in demanding conditions. As a Senior Motor Test Engineer, you will build the evidence behind that confidence by characterizing motors, propulsion systems, actuators, and propeller subassemblies in the lab and connecting results to flight and field performance.
You will own performance and reliability test campaigns from specification through technical recommendation. Your work will inform design release, vehicle readiness, field reliability, model validation, and production-test decisions.
What You'll Do- 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.
- Partner with mechanical, electrical, and firmware engineers to translate design intent into rigorous test requirements
- Work with manufacturing to develop production test strategies that balance coverage, throughput, and cost
- Develop automated test scripts and data acquisition pipelines (Python, or equivalent)
- Hands-on experience with electric motors and actuators, including efficiency characterization, losses evaluation, testing to evaluate electrical and thermal models.
- Hands-on experience with actuator performance and control system evaluation.
- Hands-on experience with structural and dynamics performance, including material testing, dynamic response, accelerometer and strain instrumentation.
- Experience building or improving test fixtures, dynamometers, thrust stands, instrumentation, or automated data-acquisition systems.
- Proficiency in Python or equivalent.
- Sound engineering judgment to connect test results to design decisions, model validation, reliability risks, and field performance.
- Experience working across hardware design and manufacturing teams to translate test evidence into practical product and production changes.
The starting cash range for this role is $130,000 - $180,000. Please note that this is a target, starting cash range for a candidate who meets the minimum qualifications for this role. The final cash pay for this role will depend on a variety of factors, including a specific candidate's experience, qualifications, skills, working location, and projected impact. The total compensation package for this role may also include: equity compensation; discretionary annual or performance bonuses; sales incentives; benefits such as medical, dental and vision insurance; paid time off; and more.
Zipline is an equal opportunity employer and prohibits discrimination and harassment of any type without regard to race, color, ancestry, national origin, religion or religious creed, mental or physical disability, medical condition, genetic information, sex (including pregnancy, childbirth, and related medical conditions), sexual orientation, gender identity, gender expression, age, marital status, military or veteran status, citizenship, or other characteristics protected by state, federal or local law or our other policies.
We value diversity at Zipline and welcome applications from those who are traditionally underrepresented in tech. If you like the sound of this position but are not sure if you are the perfect fit, please apply!
Skills Required
- Hands-on experience with electric motors and actuators including efficiency characterization, loss evaluation, and demagnetization testing
- Experience evaluating actuator performance and control system dynamics
- Experience with structural and dynamics testing including material testing, accelerometer and strain instrumentation
- Experience building or improving test fixtures, dynamometers, thrust stands, instrumentation, or automated data-acquisition systems
- Proficiency in Python or equivalent for developing automated test scripts and data pipelines
- Ability to connect test results to design decisions, model validation, reliability risks, and field performance
- Experience partnering across hardware design and manufacturing teams to translate test evidence into product and production changes
Zipline Compensation & Benefits Highlights
The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about Zipline and has not been reviewed or approved by Zipline.
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Healthcare Strength — Healthcare coverage is consistently described as comprehensive and high quality, with multiple plan choices, low out‑of‑pocket costs, and additions like HRA, One Medical, and fertility support.
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Parental & Family Support — Parental and family leave is highlighted as generous and meaningfully used, reinforcing support for major life events.
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Leave & Time Off Breadth — Paid time off, sick days, and holidays are portrayed as solid and broadly available, contributing to overall benefits depth.
Zipline Insights
What We Do
Zipline is the world's largest autonomous delivery network and is powered entirely by fixed-wing drones. Our fleet circles the equivalent distance of the equator every 2.5 days, and we have shipped hundreds of thousands of critical medical products across Rwanda, Ghana, and now beginning in the United States.
Why Work With Us
Zipline is the perfect intersection of super cutting-edge tech, deep social mission, and extremely compelling business case. Our small, scrappy, customer-obsessed, humble, and mission-driven team has set the bar for what is possible in the drone logistics industry globally, and has designed some incredibly elegant technology in the process.
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