Worked on backend reliability improvements for the louislam/uptime-kuma monitoring platform, focusing on refining error handling within the Tailscale Ping Monitor. Addressed an issue where errors were previously emitted based solely on stderr output, which could lead to false positives and unnecessary alerts. Enhanced the monitoring logic by validating the process exit code before triggering error events, ensuring that only genuine failures prompt operator attention. This update, implemented using JavaScript and leveraging backend development skills, reduced monitoring noise and improved the accuracy of alerting. The work contributed to more dependable Tailscale checks and streamlined incident response for system operators.