Worked on the elastic/apm-agent-ruby repository to deliver Ruby 3.4 compatibility for the APM agent, focusing on updating configurations and dependencies to support the latest Ruby version. Addressed integration challenges by refining Sidekiq job name detection, improving MongoDB spec handling, and ensuring stable operation across multiple Rails version combinations. Emphasized test reliability by enhancing CI/CD configuration and reducing flakiness in cross-version testing. Utilized Ruby and YAML to implement these changes, prioritizing deployment readiness and business value. The work demonstrated depth in agent development and testing, resulting in a robust feature that supports evolving Ruby environments without introducing regressions.