J. Garcia contributed to the jenkinsci/workflow-cps-plugin and jenkinsci/github-branch-source-plugin repositories, focusing on pipeline stability, configuration management, and dependency hygiene. They delivered features such as Sandbox lifecycle integration with ScriptApproval, improving security and restart reliability by migrating APIs and addressing persistence issues using Java and Groovy. Garcia also enhanced Configuration as Code (CasC) compatibility, adding targeted tests to prevent regressions. In the GitHub Branch Source plugin, they resolved CasC export test failures by updating YAML configurations and aligned dependencies with the latest BOM standards. Their work demonstrated depth in Jenkins plugin development, dependency management, and robust testing practices.