Mayank Sharma developed the Warm Tiering Foundation and Flags Refactor for the wazuh-indexer repository, focusing on backend development and distributed systems using Java and OpenSearch. He introduced new settings and updated nomenclature to clearly distinguish current warm tiering from planned hot tiering, addressing the need for precise index management. His refactor of feature flags and index settings enabled accurate identification and handling of warm indices, ensuring correct behavior for remote storage and shard allocation. The work improved maintainability and traceability by aligning documentation and code structure, demonstrating a thoughtful approach to evolving storage requirements within a distributed backend environment.