Software Engineer, Motion Planning

DiDi

San Jose, CAFresher1h agovia LinkedIn

About The Role

We are seeking a Software Engineer / Sr. Software Engineer to join our team and develop the core decision-making and motion planning systems for our autonomous vehicles.

Key Responsibilities

  • Design and implement the core motion planning logic that determines the vehicle's high-level actions (e.g., lane changes, merges, yields, and interactions with other agents).
  • 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.

Requirements & Tech Stack

  • Strong proficiency in C++ for implementing complex, real-time algorithms.
  • Solid understanding of robotics fundamentals, including decision-making, motion planning, control theory, trajectory ranking, search, and optimization algorithms.
  • Related experience in one or more of the following: motion planning, trajectory optimization, world environment reasoning, trajectory ranking, and cost design.

Qualifications

  • B.S./M.S. in Computer Science, Robotics, or a related field.
  • Experience in autonomous systems, robotics, or automotive software development.

Preferred Qualifications

  • PhD or internship experience related to robotics planning system designs.
  • Knowledge of vehicle dynamics and longitudinal/lateral control systems.
  • Solid understanding of machine learning principles, reinforcement learning, and related algorithms.

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