Motion Planning Engineer (PhD, Intern)

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DiDi Labs

Applications Closed

Posted 3 months ago

Internship

San Jose, California

In Person

Smart Summary

The role involves implementing solutions for Behavioral Planning and designing motion planning algorithms for autonomous vehicles. Additionally, the engineer will analyze and debug system performance through simulations and real-world data.

We are seeking a PhD graduate with a strong research background in motion planning, robotics, or autonomous systems. The ideal candidate will have experience in algorithm design and system integration. Excellent analytical and communication skills, along with hands-on experience in C++ and Python, are required.

Must Have Skills for ATS

Motion Planning

Robotics

Algorithm Design

System Integration

Behavioral Planning

Trajectory Optimization

Multi-Agent Interaction

C++

Python

Analytical Skills

Communication Skills

Collaboration

Simulation

Real-World Data

Cost Functions

Optimization Frameworks

Job Description

About The Company

DiDi's autonomous driving unit was established in 2016 with the mission of developing Level 4 autonomous driving (AD) technology to make transportation safer and more efficient. In August 2019, the unit became an independent company, DiDi Autonomous Driving, dedicated to advanced AD R&D, product application, and business expansion. We believe integrating AD technology into a shared-mobility fleet will generate immense social value. By leveraging DiDi's specialized technology, operational expertise, and integrated ecosystem, we are positioned to build and operate a highly efficient, user-oriented autonomous fleet.


About The Role

We are seeking a motivated PhD graduate with a strong research background in motion planning, robotics, or autonomous systems. In this role, you will apply your expertise in algorithm design and system integration to help develop next-generation planning capabilities for autonomous vehicles.

Responsibilities

  • Implement novel solutions for Behavioral Planning, enabling high-level decision-making for lane changes, merges, yields, and multi-agent interactions.
  • Design and optimize motion planning algorithms that integrate geometry-based path reasoning and context-aware speed reasoning into smooth, safe trajectories.
  • Develop and improve core geometry and velocity planning systems to ensure feasibility, compliance, and comfort across diverse driving scenarios.
  • Model complex driving environments and agent behaviors to create a robust world representation for planning under uncertainty.
  • Formulate cost functions and optimization frameworks that balance safety, comfort, and efficiency in trajectory selection.
  • Analyze, test, and debug system performance through simulation and real-world data, conducting root-cause investigations and proposing enhancements.
  • Collaborate with researchers and engineers across Perception, Prediction, and Control to ensure an integrated, reliable autonomy stack.

Qualifications

  • Recently completed or soon-to-complete PhD in Robotics, Computer Science, Electrical Engineering, or a related field.
  • Research or Internship experience in one or more of the following:
  • Motion planning algorithms (optimization, sampling, graph/search-based methods)
  • Behavioral planning and decision-making under uncertainty
  • Trajectory optimization and control
  • Multi-agent interaction modeling
  • Proven research ability demonstrated by publications in top-tier conferences (e.g., RSS, ICRA, IROS, CVPR, NeurIPS, CoRL).
  • Hands-on experience in C++ and Python for implementing complex, real-time algorithms.
  • Excellent analytical and communication skills, with a collaborative mindset.
  • For Internship Applicants: This role offers a clear pathway, with top-performing interns receiving the opportunity to convert to a full-time engineer upon successful completion of the program.

The hourly rate for the Intern position in the selected city is $46. Interns will also be eligible for Intern benefits. 

Applications are accepted on an ongoing basis. This posting is for an existing vacancy.

I acknowledge that prior to submitting this application, I have read and accepted the Privacy Notice for California Residents which is available on https://v.didi.cn/AQnxlBa

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DiDi Labs

DiDi's autonomous driving unit was set up in 2016 and was committed to delivering world's leading Level 4 autonomous driving ("AD") technologies, aiming to make transportation safer and more efficient. In August 2019, this unit was upgraded to an independent company, DiDi Autonomous Driving, focusing on advanced AD technology research and development, product application and other expanded businesses. Up to now, DiDi Autonomous Driving have acquired public road testing licences in Beijing, Shanghai, Suzhou and California, along with one of the first Intelligent Connected Vehicle Demostration Application License in China that issued by Shanghai. We believe that the deployment of AD technology into shared-mobility fleet will create great social value. DiDi's advanced technologies, massive data, rich experience along with complete ecosystem in the mobility field will equip DiDi Autonomous Driving to build and operate world's leading autonomous fleets.

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