Worked on reliability and performance improvements for the langchain-ai/delta-rs and ethereum/ethereum-org-website repositories, focusing on bug fixes and documentation alignment. Addressed Delta Lake integration by refining Parquet column projection in Rust, ensuring only necessary columns are read during scans, and updated API usage for forward compatibility. Expanded test coverage to prevent regressions and improve production data operations. In parallel, updated documentation to accurately reflect the supported DuneSQL dialect, enhancing developer onboarding and guidance. Leveraged skills in Rust, Python, and schema management to deliver targeted solutions that improved data processing efficiency and maintained clarity for contributors and users alike.