The Senior Mechanical Design Engineer – Closures at DoorDash Labs will lead the design and execution of closure systems for autonomous delivery vehicles. This role combines mechanical engineering with vehicle integration and product reliability, ensuring robust access systems for demanding environments. The team is focused on innovation in automation and robotics to enhance last-mile logistics. Candidates will work collaboratively across various teams to create systems that meet durability and manufacturability requirements.

• Bachelor’s or Master’s degree in Mechanical Engineering or a related field.
• 6+ years of experience designing automotive body, closure, or mechanism systems.
• Experience with commercial vehicles, autonomous vehicles, robotics, or high-duty-cycle products is a strong plus.
• Deep expertise in closure mechanisms including hinges, latches, actuators, linkages, counterbalance systems, and environmental sealing.
• Understanding of high-volume manufacturing processes such as sheet metal stamping, castings, injection molding, extrusions, and welded assemblies.
• Extensive CAD experience with NX (preferred), SolidWorks, or CATIA.
• Skilled at tolerance analysis, stack-up management, GD&T, and designing robust interfaces between mechanical systems.
• Strong understanding of structural design, fatigue, durability, corrosion prevention, and environmental sealing for outdoor products.
• Ability to leverage simulation tools (FEA, kinematic analysis, MATLAB, Python, or similar) to validate concepts.
• Demonstrated success leading cross-functional technical discussions and influencing engineering decisions.

• Own the architecture, design, and execution of closure systems for autonomous delivery vehicles.
• Collaborate with industrial design, vehicle architecture, systems engineering, manufacturing, reliability, and operations teams.
• Ensure closure systems meet rigorous durability, cost, and manufacturability requirements.
• Contribute to the form and function of a high-profile delivery robot.
• Solve engineering problems at the intersection of robotics, automotive engineering, and logistics.
• Translate engineering decisions into operational impact.
• Review CAD designs in design reviews and troubleshoot hardware on the prototype floor.
• Work with manufacturing engineers to improve assembly quality.