Worked on enhancing the undo deletion workflow for the Projekt-Zespolowy repository, focusing on backend reliability and data integrity. Addressed a bug where posts remained incorrectly flagged as deleted after an undo operation, ensuring that users could interact with restored posts seamlessly. The solution involved refining post ownership checks to include deleted posts during retrieval and validating the end-to-end undo process to prevent edge-case data inconsistencies. Leveraged C# for backend development and API design, emphasizing robust content management. This targeted fix improved the user experience by maintaining accurate post states and supporting reliable undo functionality within the application’s backend infrastructure.