Mechanical Engineer - Engineer, Chassis & Vehicle Dynamic

Mechanical Engineer - Engineer, Chassis & Vehicle Dynamic We're looking for a Mechanical Engineer to develop and improve chassis systems and vehicle dynamics performance for DOT, DoorDash's autonomous delivery robot. You'll combine hands-on mechanical design, engineering analysis, and vehicle testing to improve existing platforms and develop suspension and chassis solutions for future projects. You'll own engineering work from requirements and concept development through detailed CAD design, prototype evaluation, and validation. Working closely with internal teams and suppliers, you'll assess designs, resolve technical challenges, and ensure chassis systems meet our performance, durability, and integration requirements. This role offers the opportunity to influence how DOT rides, handles, brakes, and traverses real-world terrain while improving the reliability and serviceability of our deployed robots. You're excited about this opportunity because you will... • Design and improve suspension and chassis systems, including suspension geometry, linkages, wheel-end assemblies, and drivetrain and brake mounting interfaces. • Own mechanical design execution, developing concepts, detailed CAD models, engineering drawings, GD&T, and tolerance analyses to support prototype builds and production release. • Sustain and improve existing platforms, investigating field issues, performing root cause analysis, and implementing validated engineering changes. • Define chassis and vehicle dynamics requirements for ride quality, traction, braking, stability, ground clearance, and obstacle traversal across terrain and payload conditions. • Provide technical oversight of supplier-developed hardware, reviewing designs, analyses, and test results to ensure systems meet vehicle requirements and integrate successfully. • Develop and execute verification and validation plans with reliability, test, and integration teams, establishing measurable acceptance criteria for components and complete vehicles. • Lead instrumented vehicle dynamics testing, analyze results, and translate findings into hardware improvements and operating limits. • Partner with controls and autonomy engineers to characterize vehicle capabilities and improve motion performance. • Support prototype builds, manufacturing, and service teams, resolving integration issues and improving durability, manufacturability, and maintainability. We're excited about you because... • 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-and can apply these fundamentals to hardware design. • You are proficient in NX, SolidWorks, CATIA, or a comparable CAD platform and have experience releasing detailed mechanical designs. • You apply sound engineering judgment to load cases, structural integrity, fatigue, bearings, bolted joints, materials, and manufacturing processes. • You can independently assess designs and analyses, identify technical risks, and drive issues to resolution with internal teams and suppliers. • 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, then use Python, MATLAB, or similar tools to evaluate results. • You take ownership from initial investigation through implementation and verification Compensation The successful candidate's starting pay will fall within the pay range listed below and is determined based on job-related factors including, but not limited to, skills, experience, qualifications, work location, and market conditions. Base salary is localized according to an employee's work location. Ranges are market-dependent and may be modified in the future. In addition to base salary, the compensation for this role includes opportunities for equity grants. Talk to your recruiter for more information. DoorDash cares about you and your overall well-being. That's why we offer a comprehensive benefits package to all regular employees, which includes a 401(k) plan with employer matching, 16 weeks of paid parental leave, wellness benefits, commuter benefits match, paid time off and paid sick leave in compliance with applicable laws (e.g. Colorado Healthy Families and Workplaces Act). DoorDash also offers medical, dental, and vision benefits, 11 paid holidays, disability and basic life insurance, family-forming assistance, and a mental health program, among others. To learn more about our benefits, visit our careers page here. See below for paid time off details: • For salaried roles: flexible paid time off/vacation, plus 80 hours of paid sick time per year. • For hourly roles: vacation accrued at about 1 hour for every 25.97 hours worked (e.g. about 6.7 hours/month if working 40 hours/week; about 3.4 hours/month if working 20 hours/week), and paid sick time accrued at 1 hour for every 30 hours worked (e.g. about 5.8 hours/month if working 40 hours/week; about 2.9 hours/month if working 20 hours/week). The national base pay range for this position within the United States, including Illinois and Colorado. $109,500-$161,000 USD