Worked on the IBM/sarama repository to address stability in API version negotiation, focusing on improving client-server communication reliability. Tackled a critical bug by aligning the API response header version with the clamped request header, ensuring that clients and servers interact consistently across different protocol versions. This fix involved careful handling of HTTP headers and version negotiation logic using Go, enhancing cross-version interoperability and reducing production errors caused by version mismatches. The solution was delivered as a clear, traceable commit, providing a robust regression path and directly improving backend reliability for systems relying on precise API version alignment and negotiation.