Worked on thebrowsercompany/swift-build repository to enhance reliability and maintainability of the build process by focusing on diagnostics and environment standardization. Developed features that print and upload Swift installer logs after setup, enabling faster diagnosis of installation failures and improving supportability. Centralized temporary directory handling by moving TEMP redirection logic into the setup-build action, which reduced duplication and standardized environment configuration. Leveraged PowerShell, YAML, and GitHub Actions to strengthen CI/CD workflows, surface logs for better observability, and accelerate troubleshooting. The work emphasized maintainable engineering practices and collaborative development, laying a foundation for easier future extension and improved support readiness.