Motion Planning Engineer - Autonomous Driving

jobr.pro; San Jose (CA); On-site; USD 141,463 - 282,264; Full time

Job summary

DiDi Autonomous Driving, established to develop Level 4 autonomous driving technology, seeks a Software Engineer / Sr. Software Engineer to join the team and build the core decision-making and motion planning systems for our autonomous vehicles.

You will tackle challenges across the full motion planning stack, from high‑level behavioral reasoning to low‑level trajectory optimization, collaborating with Prediction, Perception, and Control teams to deliver safe, efficient navigation.

Qualifications

• B.S./M.S. in Computer Science, Robotics, or related field.
• Experience in autonomous systems, robotics, or automotive software development.
• Strong proficiency in C++ for real-time algorithms.
• Solid understanding of robotics fundamentals, including decision‑making, motion planning, control theory, trajectory ranking, optimization.
• Related experience in motion planning, trajectory optimization and world environment reasoning.

Responsibilities

• Design and implement core motion planning logic that determines the vehicle's high-level actions.
• Develop and optimize the motion planning algorithms that execute behavioral decisions, integrating Geometry Reasoning (path) and Speed Reasoning (velocity) into a cohesive trajectory.
• Architect and enhance the geometry system for generating geometrically feasible and compliant paths.
• Architect and refine the velocity system for generating context‑aware, comfortable, and safe velocity profiles.
• Model complex driving scenarios and agent interactions to create a robust world model for the behavioral planner.
• Design different costs for trajectory ranking to trade off ETAs, comfort and safety of the vehicle behaviors.
• Conduct in-depth analysis, testing, and debugging of the system's performance in various scenarios, leading root cause investigations.
• Collaborate with Prediction, Perception, and Control teams to ensure a seamless flow from environmental understanding to physical vehicle motion.

Skills

C++

Robotics fundamentals

Autonomous systems

Control theory

Trajectory optimization

Decision making

Education

B.S./M.S. in Computer Science or related

Job description

DiDi Autonomous Driving, established to develop Level 4 autonomous driving technology, seeks a Software Engineer / Sr. Software Engineer to join the team and build the core decision-making and motion planning systems for our autonomous vehicles.

You will tackle challenges across the full motion planning stack, from high‑level behavioral reasoning to low‑level trajectory optimization, collaborating with Prediction, Perception, and Control teams to deliver safe, efficient navigation.