Worked on stabilizing performance testing workflows in the mozilla/gecko-dev repository by addressing intermittent failures and improving debugging efficiency. Focused on updating Browsertime dependencies and refining test configurations, particularly for macOS-specific scenarios, to reduce flaky test results and false negatives. Enhanced symbolication and regression analysis by updating usb-power-profiling, which streamlined the identification of performance regressions. Utilized skills in bug fixing, debugging, and dependency management, working primarily with RST and TOML. The efforts resulted in more reliable performance test runs and faster feedback cycles, contributing to a smoother maintenance process and improved throughput for performance-related development tasks.