Worked on enhancing observability within the breez-sdk-greenlight repository by developing a feature that formats diagnostic logging outputs as hexadecimal strings. This approach improved the readability of node IDs and channel data, making routing responses and custom messages easier to interpret during debugging sessions. Leveraging Rust, the developer focused on SDK development and advanced logging techniques to streamline the process of diagnosing node communication issues. By implementing hex-formatted outputs for byte arrays, the work reduced the time required to triage problems and contributed to more efficient debugging workflows, reflecting a targeted and practical application of debugging and logging skills.