Marcel Lenterman focused on improving deployment reliability for the wearefrank/haalcentraal-connector by addressing timing issues that caused flakiness in the CI/CD pipeline. He introduced a startup delay in the continuous integration process and implemented a post-health-check wait to ensure Docker containers were fully ready before receiving traffic. Using YAML for configuration and leveraging his skills in DevOps and Docker, Marcel’s work targeted the root causes of unstable deployments. These changes resulted in more predictable rollouts and reduced incidents during delivery cycles. The depth of his contribution lay in diagnosing and mitigating subtle timing problems to enhance overall pipeline stability.