Developed the backend feature for the Announcement Management System in the wtg/shubble repository, focusing on introducing a robust Announcement model to support time-bound and targeted communications. Leveraging Python and ORM techniques, the work involved designing a database schema with fields for message content, type, active status, expiration, and creation timestamp, ensuring alignment between backend data structures and frontend announcement types. This approach laid the foundation for future notification workflows and compliance use cases by enabling expiration logic and improved governance. The project demonstrated skills in backend development and database modeling, with an emphasis on incremental schema evolution and integration readiness.