Worked on backend performance optimization for the open-telemetry/opentelemetry-go repository, focusing on reducing overhead in the tracing path when tracing is disabled. Addressed a specific bug by introducing guards for metric recording, ensuring that SpanStarted and spanLive metrics are only processed when tracing instruments are enabled. This approach, implemented in Go, led to measurable reductions in operation time without altering behavior when tracing remains active. The solution maintained compatibility with existing tests and was linked to a tracked issue. The work demonstrated a targeted use of Go and backend development skills, emphasizing careful performance tuning and code maintainability.