During his recent work, Bob focused on enhancing graphics rendering and testing infrastructure within the Flutter ecosystem. He unified blur rendering across all backends in the flutter/engine repository by removing legacy rasterization paths, updating tests for more accurate output, and improving cross-repo consistency. In engine-flutter-autoroll/flutter, he aligned image filter tests with the new blur algorithm, ensuring predictable visuals and faster CI feedback. Later, in flutter/flutter, Bob delivered Vulkan 1.1 compatibility testing enhancements, updating C++ test infrastructure to improve coverage and performance visibility. His work demonstrated depth in C++, Dart, graphics programming, and collaborative code refactoring across teams.