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Senior Mechanical Engineer - Powertrain



Other Engineering
South San Francisco, CA, USA
Posted on Thursday, August 24, 2023


Do you want to change the world? Zipline is on a mission to transform the way goods move. Our aim is to solve the world’s most urgent and complex access challenges by building, manufacturing and operating the first instant delivery and logistics system that serves all humans equally, wherever they are. From powering Rwanda’s national blood delivery network and Ghana’s COVID-19 vaccine distribution, to providing on-demand home delivery for Walmart, to enabling healthcare providers to bring care directly to U.S. homes, we are transforming the way things move for businesses, governments and consumers. The technology is complex but the idea is simple: a teleportation service that delivers what you need, when you need it. Through our technology that includes robotics and autonomy, we are decarbonizing delivery, decreasing road congestion, and reducing fossil fuel consumption and air pollution, while providing equitable access to billions of people and building a more resilient global supply chain.
Join Zipline and help us to make good on our promise to build an equitable and more resilient global supply chain for billions of people.


We are looking for an experienced mechanical design engineer who has specifically designed electric motors, to join out Powertrain team. The Powertrain team is a multi-disciplinary hardware and software team responsible for designing the electric drivetrain at the heart of our life-saving drone delivery service, operating in some of the harshest environments on earth. You will be a part of a small but mighty team responsible for batteries, motors, geartrain, propellers, and all propulsion related components of autonomous delivery aircraft. You’ll be first and foremost an exceptional engineer, excited to help level up the team with your expertise in designing motors.

We’ve already helped make drone delivery a daily feature of medical care in the countries where we operate. As we expand the reach of our service, we are pushing our world-class powertrain to new levels of power, torque, and efficiency to reach even more people. If you are passionate about mechanical design and highly motivated by solving difficult challenges we want to hear from you.


  • Have design responsibility over the electric motors across Zipline’s operational and next-generation aircraft.
  • Solve mechanical design engineering challenges to improve system performance for aerospace-grade mass and reliability.
  • Lead the design validation and durability testing campaigns and data analysis for electric motors.
  • Build strong cross-functional relationships with vehicle design teams to ensure seamless system integration.
  • Uphold the powertrain mechanical design standards and processes.
  • Carry designs through to high-volume production; DFM, cost reductions, and outsourcing.


  • 6+ years experience of direct product development experience.
  • Strong fundamentals in electric motor design.
  • Experience with high volume manufacturing processes such as injection molding, stamping, forging, welding, casting, printing, etc.
  • Extensive prototyping experience.
  • Core skills: GD&T, 3D CAD, 2D Drawings, DFMEA, structural and thermal FEA.


The starting cash range for this role is $160,000 - $210,000. 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!