Ciaran Grant developed a Slack notification integration for the govuk-one-login/github-actions repository, focusing on improving release and workflow visibility for engineering teams. He implemented two GitHub Actions that send notifications to Slack via AWS SNS, supporting both general and workflow-specific messages. The solution involved writing Bash scripts and defining actions in YAML and JSON, with comprehensive documentation and usage examples to support adoption. By enabling automated Slack alerts for workflow events, Ciaran enhanced observability and team communication around deployments. The work demonstrated depth in CI/CD automation, scripting, and cloud-based messaging, addressing a clear need for real-time release notifications within the project.