Senior​/Software Engineer, Motion Planning

Senior Software Engineer

PlusAI is a Physical AI company pioneering AI-based virtual driver software for factory-built autonomous trucks. Partners including TRATON GROUP's Scania, MAN, and International brands, Hyundai Motor Company, Iveco Group, Bosch, and DSV are working with Plus to accelerate the deployment of next-generation autonomous trucks. If you're ready to make a huge impact and drive the future of autonomy, Plus is looking for talented individuals to join its fast-growing teams.

As a Senior Software Engineer on the Motion Planning team, you'll research, develop, and implement planning technologies that let PlusAI's trucks handle complex, real-world driving scenarios in a safe and human-like manner. You'll work across the full decision-making stack, from reasoning about what the truck should do to determining precisely how it should get there, while accounting for the many ways a scenario could unfold.

Responsibilities

• Design and implement algorithms for decision-making and trajectory generation, ensuring safety, comfort, and reliability across a wide range of driving conditions.
• Bring novel robotics and machine learning techniques from research into a production-grade, safety-critical system.
• Reason about complex, socially-nuanced driving situations, such as negotiating merges, junctions, and interactions with other road users, under uncertainty.
• Utilize modern C++ numerical optimization frameworks (e.g., CasADi, Acados) and industry-standard tooling (git, ROS, etc.) to integrate new planning algorithms into the production stack.
• Partner closely with the ML and prediction teams to integrate, refine, and act on probabilistic and multi-future representations of how a scenario might evolve, shaping how these outputs are consumed by planning decisions.
• Perform system-level diagnostics and tuning using in-house and open-source visualization tools (e.g., webviz).
• Collaborate cross-functionally and communicate clearly, producing system designs that are reviewed and approved at a high level before implementation begins.

Required skills

• MS with 1-2 years of relevant experience, or PhD, in Computer Science, Robotics, or a related field.
• Strong production software development skills in C++;
  Python experience a plus.
• Robotics expertise in one or more of: path planning, motion planning, trajectory generation, behavior planning, optimal control.
• Strong math (geometry, analysis, probability) and physics (kinematics, dynamics) fundamentals.
• Experience designing, implementing, and refining planning algorithms on a real-world robotic or vehicle platform.
• Strong oral and written communication skills, with the ability to collaborate across teams and derive solutions from cross-functional input

Preferred skills

• PhD + 1-2 years or MS + 3-4 years of relevant experience.
• Bonus: exposure to machine learning techniques such as deep learning, imitation learning, transformer-based models, or diffusion-based models, particularly as applied to decision-making or scenario generation.
• Familiarity with safety frameworks for autonomy (e.g., RSS, collision avoidance/MRM logic).
• Prior experience working on safety-critical systems.

$130,000 - $220,000 a year

Your opportunities joining PlusAI

Work, learn and grow in a highly future-oriented, innovative and dynamic field.

Wide range of opportunities for personal and professional development.

Catered free lunch, unlimited snacks and beverages.

Highly competitive salary and benefits package, including 401(k) plan.