Worked on the fedspendingtransparency/usaspending-api repository to enhance the reliability of the ETL process, specifically focusing on the load_transactions_in_delta component. Addressed error handling for missing tables and views by refining exception message parsing and standardizing string conversion for AnalysisException cases. Improved the clarity of failure signals, enabling quicker diagnosis of data pipeline issues and reducing the risk of production outages. Expanded integration tests to cover new failure scenarios, ensuring robust validation of ETL error paths. Utilized Python for backend development, with an emphasis on ETL workflows, error handling, and automated testing to support downstream analytics and data ingestion stability.