Worked on reliability and stability improvements across the microsoft/azure-pipelines-tasks and microsoft/azure-pipelines-agent repositories, focusing on backend and DevOps engineering using C# and TypeScript. Addressed critical bugs by correcting the default implicit FTPS port in FtpUploadV2 and overhauling the timeline update job’s exception handling to better manage network outages and streamline retry logic. Enhanced the feature flag subsystem by unifying exception handling, ensuring that unexpected errors default to a safe state and are properly logged. These efforts improved CI/CD pipeline resilience, reduced job failures, and increased maintainability, with a strong emphasis on asynchronous programming and robust error handling.