Worked on the prometheus/alertmanager repository to deliver a targeted inhibitor performance optimization, focusing on backend development and performance tuning using Go. The work involved removing metric selection from the inhibitor’s hot path, optimizing duration calculations, and refining the handling of muted alerts to reduce latency and resource usage during high alert loads. By instrumenting and refactoring critical code paths, throughput for alert processing improved by approximately 2.5 times, enhancing reliability and scalability under peak conditions. No major bugs were reported during this period, and the changes contributed to more efficient alert delivery and a better operator experience in production environments.