Felix Glaeske worked on the Unique-AG/helm-charts repository, where he implemented support for the extraLabels option in the backend-service Helm chart. This feature allows users to apply custom labels to Kubernetes Services, enabling more flexible label-based routing and resource organization. Felix updated the Helm templates and documentation to support this new option, ensuring that users could easily adopt the feature. He also introduced an automated test written in YAML to verify the correct application of extra labels, focusing on end-to-end correctness. His work demonstrated a solid understanding of Helm, Kubernetes, and configuration management within cloud-native environments.