Worked on enhancing observability and debugging capabilities in the facebook/fbthrift repository, focusing on backend development using Python. Introduced a feature that adds detailed debugging logs when a ValueError is raised due to a missing URI in Thrift structures, improving error handling and making it easier to diagnose deserialization issues. The approach centered on enriching log output to provide more actionable context for support and troubleshooting, thereby reducing mean time to resolution for future incidents. Maintained code quality and traceability by referencing specific commits and differential revisions, ensuring that the instrumentation improvements are auditable and align with established development processes.