Álvaro Avilés developed end-to-end offers management features across the betca-tpv-angular and betca-tpv-core repositories, enabling the full lifecycle from offer creation to PDF generation and application in shopping carts. He implemented Angular-based UIs integrated with Java Spring Boot backends, focusing on robust API development, validation, and database management with MongoDB. His work included automated discount application, live UI updates, and URL-safe reference generation, addressing both business logic and user experience. By delivering features such as PDF offer printing, search filters, and form validation, Álvaro ensured scalable, reliable promotions management while resolving critical bugs and maintaining consistent data integrity throughout.