Worked on enhancing developer tooling and diagnostics in large-scale build and debugging environments. In the bazelbuild/bazel repository, extended the BazelFlagInfo protobuf using C++ and Protocol Buffers to include metadata such as deprecation warnings, default values, and option expansions, enabling improved flag validation, auto-completion, and misconfiguration detection in Bazelrc files. In the arm/arm-toolchain repository, focused on C++ coroutine debugging by updating GDB scripts to introduce a pretty-printer for std::coroutine_handle, utilities for accessing nested coroutine members, and more accurate suspension point identification, resulting in more reliable and informative debugging workflows for coroutine-based applications.