January 2025 — Carnegiemellonracing/monorepo: Focused on decommissioning legacy PTC paths in the Vehicle State Machine (VSM) and CAN layer to reduce maintenance effort and risk. Key feature delivered: PTC Decommissioning and CAN Cleanup, removing deprecated PTC functionality from VSM error handling and eliminating the CANRX_HEARTBEAT_PTC enum, thereby streamlining CAN message types. Major maintenance and risk reduction outcome: reduced maintenance surface by removing legacy PTC code paths; no separate bug fixes were needed beyond cleanup of deprecated logic, which lowers the likelihood of PTC-related edge-case defects going forward. Overall impact and accomplishments: improved maintainability and long-term reliability of the CAN and VSM subsystems, enabling faster future iterations and easier onboarding for contributors. Clear business value through a simpler, more robust communication layer and fewer maintenance tickets related to PTC paths. Technologies/skills demonstrated: CAN protocol cleanup, Vehicle State Machine refactor, legacy code deprecation, focused code cleanup with minimal surface area, version-control hygiene and collaboration.