Andrea Sanchez developed core scheduling and category management features for PowerMate and the FunkoShop Backend, focusing on robust backend architecture and maintainable code. In the Acacia-Sanchez/PowerMate repository, Andrea implemented an end-to-end schedule management system using Java, Spring Boot, and JPA, integrating device control and data transfer objects for reliable API operations. For roberto-lumbreras/P4-Gijon-Project-FunkoShop-Backend, Andrea enhanced product discovery with keyword-based search, modernized data models, and improved test coverage, emphasizing DTO refactoring and security updates. The work demonstrated depth in backend development, code organization, and test-driven design, resulting in scalable, well-structured, and business-focused solutions.