Sergey worked on the neondatabase/neon repository, focusing on simplifying the build and test workflow by removing the deployment of legacy SCRAM proxies in response to their deprecation. This change streamlined the CI/CD pipeline, eliminated obsolete YAML configurations, and reduced ongoing DevOps maintenance overhead. By addressing the risk associated with outdated proxies, Sergey improved the reliability and maintainability of the build system. The work demonstrated a targeted approach to technical debt, leveraging expertise in CI/CD and YAML to ensure the system remained current and efficient. Over the month, Sergey delivered this feature without addressing major bugs, reflecting focused engineering depth.