During March 2026, Gavriilidis enhanced data pipeline reliability and integration readiness across the apache/incubator-wayang and duckdb/community-extensions repositories. He developed a cross-platform TableSink abstraction in Java and Spark, introducing robust schema management and error handling to support diverse database products. His work included extending core utilities and updating unit tests to ensure resilience and maintainability. Additionally, he upgraded the SheetReader extension in C++ and Scala, aligning its configuration for seamless PolyDB integration. Gavriilidis’s contributions focused on improving data ingestion, operational documentation, and onboarding processes, demonstrating depth in data processing, extension development, and configuration management within complex software ecosystems.