During March 2026, Kilian worked on the hashicorp/terraform-provider-azurerm repository, delivering a feature that streamlines Spot Node Pool configuration for azurerm_kubernetes_cluster_node_pool resources. He made the max_surge and max_unavailable parameters optional specifically for spot node pools, addressing configuration friction and reducing the risk of misconfiguration. Kilian implemented validation rules and comprehensive unit tests in Go to ensure correct usage and prevent brittle deployments, directly improving the reliability and scalability of AKS workloads. His work demonstrated a solid understanding of backend development and Terraform provider internals, with clear traceability to both the relevant commit and the associated issue.