Developed and validated the MongoDB Export Transfer Operator for the astronomer/airflow repository, enabling seamless export of MongoDB collections to Google Cloud Storage in JSON, CSV, or Parquet formats. Leveraging Python and Apache Airflow, the solution reused the existing SQL-to-GCS pipeline by implementing a DB-API compatible cursor wrapper and added BSON-to-BigQuery type conversions. The operator supports flexible data extraction using either a find filter or aggregation pipeline, with optional projection and allowDiskUse. The work included full integration, comprehensive testing, CI stabilization, and customer-facing documentation, demonstrating depth in cloud computing, data engineering, and cross-provider dependency management.