Worked on the open-bus-map-search repository to address a bug affecting the accuracy of Trip History stop time displays, focusing on improving the reliability of historical transit timelines. Applied backend development and API development skills using TypeScript to fix the stop time calculation, ensuring that users receive precise historical data. Enhanced the codebase by removing an unused function, which reduced maintenance overhead and simplified future development. Optimized vehicle location fetch parameters to decrease data latency and further refine stop time precision. Collaborated closely with team members through code reviews and shared commits, contributing to improved code quality and knowledge transfer.