Worked on enhancing the ByField rerank processor within the opensearch-project/neural-search repository, focusing on improving reliability and user-facing quality. Developed a targeted feature that refined exception messages and introduced robust validation for numeric-string fields, ensuring the reranking process handled non-numeric data gracefully. Expanded test coverage by adding new cases to validate ranking behavior with numerical string values, which reduced regression risk and increased confidence in the system’s stability. Utilized Java and backend development skills to implement these changes, emphasizing test-driven improvements and code health. The work contributed to a smoother user experience and more maintainable search functionality.