Worked on the uoftblueprint/brampton-tennis-queue repository to deliver an end-session workflow for managing tennis court availability. Developed an endSession API endpoint using Express.js and Node.js, enabling clean termination of player sessions at specific locations while preserving historical data in Firebase. Instead of deleting records, implemented a non-destructive update that marks players as not waiting and uses a placeholder name, ensuring accurate tracking of court usage. This approach maintains reliable queue management and sets the foundation for future enhancements, such as advancing the queue and refining court availability logic. The work focused on backend development and REST API design in JavaScript.