Worked on enhancing data integrity within the delta-io/delta-rs repository by addressing a critical issue in MERGE operations. Developed and implemented a validation mechanism to ensure that a single target row cannot be matched by multiple source rows during a merge, thereby preserving the correctness of merged datasets and reducing the risk of duplicate matches in downstream analytics. Utilized Python and Rust to deliver this solution, applying data engineering and data validation expertise. Maintained high code quality through rigorous unit testing and adherence to project governance standards, contributing to more reliable and accurate data processing workflows within the delta-rs project.