Worked on the netty/netty repository to deliver a targeted fix addressing auto-scaling stability for SingleThreadEventExecutors in Java. Focused on correcting the handling of the NOT_STARTED state, the work ensured that executors could be properly suspended without being inadvertently started, which improved the accuracy of active-executor metrics and prevented over-provisioning. The solution involved updating state-machine logic and adding regression tests to validate transitions and scale-down behavior. Collaborated closely with other contributors through code review and co-authored pull requests, demonstrating strong skills in Java, concurrent programming, and unit testing while enhancing the reliability of auto-scaling mechanisms in production environments.