During their work on the hardisgroupcom/sfdx-hardis repository, Madhan focused on stabilizing large-data exports by addressing a critical bug in the bulkQueryByChunks pagination logic. Using TypeScript and leveraging backend development and SOQL expertise, Madhan implemented a robust solution to prevent duplicate WHERE clauses in SOQL queries, improving the detection of existing clauses and ensuring valid syntax. This fix enabled reliable exports for large, filtered datasets and ensured that record limits were respected, reducing user-facing errors and support overhead. The work demonstrated a deep understanding of query safety and pagination, resulting in improved code maintainability and export reliability.