Worked on the Shopify/grpc repository to address a critical issue in protobuf serialization for gRPC services. Focused on C++ development, the engineer resolved an int32 overflow bug that could cause truncation or mishandling of large messages during serialization. The solution involved validating the byte_size before casting to int and returning an internal error if an overflow was detected, thereby reducing the risk of data corruption and improving system stability. This targeted patch enhanced error handling and serialization reliability, supporting enterprise-scale messaging. The work demonstrated a strong grasp of gRPC, Protobuf, and robust error management in high-volume distributed systems.