During May 2025, Shubham Saboo focused on backend reliability improvements for the Shubhamsaboo/adk-python repository, specifically addressing a bug in the InMemorySessionService. He corrected the after_timestamp filtering logic in the get_session method, ensuring that session events at or after the specified timestamp were accurately included, which resolved a data integrity issue. To prevent future regressions, he implemented a comprehensive test suite covering various configurations, including num_recent_events and after_timestamp combinations. Working primarily with Python, Shubham applied his skills in backend development, session management, and testing to deliver a robust solution that enhanced the accuracy of session data retrieval.