During December 2024, Egor Sheremetov focused on backend stability and data validation for the neighbor-connect repository. He addressed two critical bugs, first restructuring the chat routing logic to move user chat access from a nested endpoint to the root, simplifying API usage and improving user experience. Additionally, he refined the validation logic for chat request descriptions, ensuring that empty or excessively long values are properly handled to maintain data integrity. Egor applied his skills in Python, API development, and backend engineering to deliver targeted, well-scoped improvements. The work demonstrated a methodical approach to incremental backend reliability and user-facing correctness.