P
Not Specified Permanent

San Jose, California · USA job

Principal Engineer, Mapping and Localization

Plus.ai

San Jose, California

Job description

Overview

As Principal Engineer on the Mapping and Localization team, you design high-fidelity sensor fusion and localization systems to achieve centimeter-level accuracy for autonomous trucks. You shape the localization architecture, balancing build-vs-buy decisions and long-term roadmaps, and tackle edge cases in GPS-denied or dynamic environments. You work closely with cross-functional teams to maintain large-scale HD maps and ensure safety in complex ODDs. This role combines research-grade concepts with production-scale delivery in a fast-growing company at the forefront of autonomous trucking.

Compensation / Benefits
  • Catered free lunch
  • Unlimited snacks and beverages
  • Competitive salary
  • 401(k) plan
  • Hybrid work arrangement
  • Career growth opportunities
Responsibilities
  • Lead the localization architecture and roadmap, balancing build-vs-buy decisions
  • Design and implement real-time sensor fusion, visual/ LiDAR odometry, and global localization algorithms
  • Develop pipelines to generate, maintain, and query HD maps
  • Work on priors-based localization and semantic map matching
  • Solve stale map issues via change detection and near real-time map updates
  • Maintain and update large-scale LiDAR-based HD maps for autonomy
  • Optimize code for embedded compute constraints (latency, memory, power) while ensuring safety
  • Provide self-diagnosis capability for localization
  • Mentor senior and junior engineers and conduct code reviews to uphold engineering standards
Key requirements
  • M.S. or Ph.D. in Robotics, Computer Science, Electrical Engineering, or a related field
  • 7+ years in robotics with at least 4 years in production-level localization or mapping systems
  • Expert-level Modern C++ (14/17/20) with strong memory management, multi-threading, and real-time considerations
  • Strong foundation in probabilistic robotics (Kalman Filtering, nonlinear optimization, SLAM)
  • Deep understanding of 3D geometry, linear algebra, and coordinate transforms (quaternions, SE(3
  • Familiarity with Eigen, Ceres, PCL, OpenCV, GTSAM
  • Mentorship and leadership
  • Code review and engineering excellence mindset
  • Cross-functional collaboration
  • CUDA/GPU programming or optimization for ARM-based embedded platforms
  • Experience with LOAM, lego-LOAM, ORB-SLAM, or VINS
  • Experience shipping localization stacks for deployed autonomous vehicles or mobile robots

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