Mechanical Engineer Intern (Fall 2026)

About Zipline

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.

The Role

Does aggressively tackling cross disciplinary projects from early conceptual stages through to full field deployment sound like the way you want to spend your time? Do you eliminate circular discussions by running a test or use your hands-on skills to build a prototype instead of scheduling another meeting? At Zipline, your work is intended for the field, where customers are counting on it every day, so there is no time for ambiguous communication or unrealistic expectations. We need dedicated engineers to burn down risk and improve reliability in our system like their life depends on it- because others' lives do. If you thrive working with a fast-paced and driven team that focuses on only the most important goals, eliminates blockers, and executes with extreme practicality, keep reading!

Mechanical Engineers at Zipline go deep in their area of ownership, become experts in the problem domain, define requirements for their systems, rapidly develop creative and simple solutions, and prove with testing that their system meets the rigors and edge-cases of real-world deployment. We are composed of teams that are responsible for everything from the earliest designs of a new system, to creating test and validation strategies, root-causing issues with existing systems, and much more.

What You'll Do

• Mechanical interns can own a variety of big problems integral to our system! You can expect to:
• Take product and engineering requirements to develop concepts and evaluate tradeoffs for each
• Use 2D and 3D CAD tools to design parts and assemblies based on sound engineering principles
• Use resources creatively to design, build, and test prototypes to gather quick learnings
• Work cross-functionally with other Zipline teams and suppliers to review designs
• Design, build, and run electro-mechanical testers that you develop to prove reliability of critical components
• Evaluate designs and components on a material, element, and fully integrated product level
• Root cause failures and develop a test to replicate the failure mode
• Document your work so that others can easily understand key decisions made
• Examples of previous intern projects include designing, building, testing, and running:
• flexible blind-mate ducting connection between an aircraft and a ground-based cooling station, allowing for aircraft battery temperature regulation during charging and pre-flight preparation
• a service strategy for removing a docked aircraft from a ground station using a custom designed hand cart, complete with an ergonomic study for a range of technician heights and strengths
• a communications tower with integrated antennas and lightning protection meant to relay vital telemetry information from the drone to the operators during flight
• characterization of proposed and delivered materials, and properties (static strength, durability, and dynamic response) of configured structures
• a wing cycle tester to identify and eliminate risk for each wing iteration and prove reliability with cycles

What You'll Bring

The most critical skill we've seen in prior entry-level candidates is robust experience designing and actually building multiple mechanical systems outside of the classroom. This is the component of your application we're most excited about, so please ensure that you've included this work in your application. Examples of things previous interns have built include submarines, solar cars in the Australian outback, electric boats and airplanes, rockets, etc.

• You must have completed at least the second year of your Undergraduate studies. Masters and PhD students are also eligible.
• You'll bring solid mechanical engineering fundamentals for structural analysis, sizing parts, and integrating components into a design with minimal help
• You'll bring automation experience from working with actuators and Raspberry Pi's (or similar)
• You're well versed in CAD, and have designed multiple projects with it
• You've worked on complex projects that require mechanical, electrical, and software design
• You're quick to change direction when you realize you've made a mistake OR could achieve the same goal in a simpler way
• You bias to action and communicate consistently with your team to ensure everyone is focused on meeting the project goals on time
• You're excited to build on your design skills with brainstorms, design reviews, and failure mode analysis
• You can anticipate, plan and schedule your own work
• You bring a can do" attitude, because we have a lot of vital work to get done and only work with people who are invested in solving critical problems

What Else You Should Know

Our internships are full-time positions, in-person at our South San Francisco or Dallas office. We will host our Fall 2026 interns from September to December.

Candidates are limited to three (3) applications within a 30-day period.

Zipline is an equal opportunity employer and prohibits discrimination and harassment of any type without regard to race, color, religion, age, sex, national origin, disability status, genetics, protected veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by federal, state or local laws or our own sensibilities.

Zipline is also committed to providing reasonable accommodations to individuals with disabilities. Please let your point of contact at Zipline know if you require any accommodations throughout your interview process.