In March 2026, Marc focused on improving the correctness and reliability of hybrid search in the lancedb/lancedb repository. He addressed a critical bug in the pre-filter logic, ensuring that prefilter arguments are correctly applied when combined with where filters, which reduced the risk of inverted or inaccurate search results. Using Python and leveraging his skills in backend development and query optimization, Marc expanded the test suite to validate both pre-filtering and post-filtering behaviors within the query execution plan. His work enhanced the accuracy of hybrid search outcomes and contributed to more trustworthy results, with clear commit documentation and traceability.