Vreimer upgraded and maintained the QUICHE dependency across the envoyproxy/envoy repository, focusing on improving QUIC protocol reliability, performance, and compatibility. By aligning integration tests and updating build configurations, Vreimer ensured that new protocol features and security fixes were seamlessly integrated. Their work included refactoring C++ code to remove unused methods, updating repository metadata, and coordinating cross-repository changes with google/quiche. Using C++, Bzl, and Starlark, Vreimer addressed build system issues and fixed a critical macro typo that unblocked downstream development. The depth of their contributions reflects strong skills in dependency management, debugging, and maintaining robust network protocol implementations.