Worked on modernizing and hardening continuous integration environments for the ofiwg/libfabric and aws/aws-ofi-nccl repositories, focusing on upgrading CI pipelines to support Ubuntu 22.04. Leveraged Jenkins, Groovy, and Linux to update test stages across multiple instance types, ensuring compatibility with current OS toolchains and improving the reliability of pull request validation. The approach emphasized minimal risk by aligning CI environments with supported operating system lifecycles, reducing maintenance overhead and enabling faster developer feedback. Demonstrated effective cross-repository collaboration and careful change management, delivering two features that enhanced infrastructure stability without disrupting existing tests or workflows during the upgrade process.