Derrick Agaba focused on stabilizing continuous integration workflows in the adoptium/aqa-tests repository, addressing reliability and traceability challenges. He enhanced Jenkins-based CI pipelines by implementing a retry-with-sleep mechanism for the cleanWs function, mitigating intermittent workspace cleanup failures, including those involving non-ASCII filenames. This approach improved build consistency and reduced flakiness across platforms. Additionally, Derrick updated the Alpine Linux problem list to track a known issue with SecureDS.java, streamlining test management and issue resolution. His work leveraged Groovy and Java within Jenkinsfile scripting, demonstrating depth in CI/CD automation and cross-platform file handling to support more predictable nightly builds.