The Mechanical Engineer role at DoorDash Labs focuses on developing and improving chassis systems and vehicle dynamics for the autonomous delivery robot, DOT. The team is dedicated to creating innovative automation and robotics solutions to enhance last-mile logistics. This position involves hands-on mechanical design, engineering analysis, and vehicle testing to enhance existing platforms and develop new solutions. The successful candidate will work closely with internal teams and suppliers to ensure designs meet performance and integration requirements.

• You have a Bachelor’s or Master’s degree in Mechanical Engineering or a related field.
• You have experience designing and developing suspension, chassis, or related mechanical systems for vehicles or mobile robots.
• You understand suspension kinematics, load transfer, tire behavior, stiffness and damping, braking, and vehicle stability.
• You are proficient in NX, SolidWorks, CATIA, or a comparable CAD platform.
• You apply sound engineering judgment to load cases, structural integrity, fatigue, bearings, bolted joints, materials, and manufacturing processes.
• You have hands-on experience with prototype assembly, instrumentation, vehicle testing, and root cause analysis.
• You can translate requirements into test methods and acceptance criteria using Python, MATLAB, or similar tools.

• Design and improve suspension and chassis systems, including suspension geometry and linkages.
• Own mechanical design execution, developing concepts and detailed CAD models.
• Sustain and improve existing platforms by investigating field issues and implementing validated engineering changes.
• Define chassis and vehicle dynamics requirements for ride quality and stability.
• Provide technical oversight of supplier-developed hardware to ensure integration success.
• Develop and execute verification and validation plans with reliability and test teams.
• Lead instrumented vehicle dynamics testing and analyze results for hardware improvements.
• Partner with controls and autonomy engineers to enhance vehicle motion performance.
• Support prototype builds and resolve integration issues to improve manufacturability.