Worked on the grafana/grafana repository to enhance the reliability and correctness of backend metrics in high-concurrency environments. Addressed a data race in the plugin metrics middleware by implementing a design where each middleware chain receives its own instance, ensuring concurrency safety and accurate metric reporting. This approach improved the integrity of metrics and reduced the risk of misleading dashboards during heavy load. The work demonstrated a strong command of Go, backend development, and concurrent programming, focusing on middleware architecture improvements that support better observability and debugging efficiency for the Grafana backend under demanding operational conditions.