John Chrosniak worked on configuration governance and traceability improvements for the usdot-fhwa-stol/carma-config repository, focusing on enhancing maintainability and reducing configuration risk. He used YAML and configuration management skills to clean up bridge.yml files, removing unused topics related to external object detection, visualization, roadway obstacles, and vehicle odometry across multiple vehicle configurations. By adding a CAR-6107 ticket reference to controller driver integration TODOs, he improved traceability without introducing functional code changes. His work emphasized documentation and configuration hygiene, streamlining onboarding and lowering the risk of misconfiguration, with a depth of attention to detail and minimal surface area changes.