Worked on the amplitude/Amplitude-TypeScript repository to enhance the reliability and security of its CI/CD pipeline. Focused on stabilizing continuous integration by pinning all previously unpinned GitHub Actions references to exact versions within YAML workflow files. This approach reduced the risk of unexpected failures caused by upstream changes and improved the reproducibility of builds across different environments. By removing variability in CI workflows, deployment risks were minimized and governance was strengthened. The work demonstrated practical DevOps skills, leveraging GitHub Actions and YAML to deliver safer, more deterministic release cycles and ensure consistent behavior for ongoing development and incident response.