Worked on improving tag management reliability in the feast-dev/feast repository by addressing race conditions in DynamoDB tag updates. Developed a diff-based update mechanism using Python and AWS services, ensuring that tag synchronization became idempotent and that unnecessary API calls were avoided when configurations remained unchanged. Focused on backend development, the solution included comprehensive unit testing to cover scenarios such as add-only, remove-only, value changes, and full replacements. Integrated code quality enhancements through automated linting and formatting, and ensured compatibility with existing CI pipelines. This work improved the efficiency and robustness of tag management during repeated store.apply() operations.