During July 2025, Darko contributed to the red-hat-data-services/argo-workflows repository by developing a feature that enables sidecar containers to automatically terminate after all main containers complete execution. He implemented this logic in Go, leveraging his expertise in container orchestration and Kubernetes to ensure sidecars wait for main containers before exiting. This approach addressed resource leakage and improved cluster efficiency by reducing idle resource usage and making workflow runtimes more predictable. The work demonstrated a focused, in-depth solution to a nuanced problem in workflow management, enhancing the reliability and maintainability of Argo workflows through careful alignment across multiple code branches.