Tom Vanden Bulck developed a calendar-based workout tracking backend for the COSC481W-2024Fall/Ript-Fitness repository, focusing on enabling users to log workouts and rest days efficiently. He designed and implemented a calendar data model, repository, service, and REST API controller using Java, JPA, and Spring Boot, ensuring a seamless end-to-end data flow. His work established the initial backend structure, supporting future analytics and enhanced user planning. The implementation progressed from a basic setup to a fully functional feature, with clear commit history reflecting iterative refinement. This foundational work improved backend data consistency and set the stage for further feature expansion.