Garry O’Donnell focused on improving deployment reliability for the DiamondLightSource/workflows repository by addressing a critical bug in the Sessionspaces Helm chart. He resolved variable scoping issues by adopting fully qualified contexts and updating variable references with the ${ syntax, which eliminated conflicts during deployment. This technical approach, implemented using YAML and leveraging Helm and Kubernetes, ensured that chart variables were correctly interpreted across different environments. Garry validated the fix by testing deployments to confirm stability and reduced failure rates. The work included a chart version bump and clear documentation, reflecting a targeted, in-depth contribution to infrastructure consistency and maintainability.