Senior DevSecOps Lead (m/w/d/x) - Identity & Security

T-Systems is building the next-generation identity provider for Germany's healthcare telematics infrastructure (TI), a security-critical, regulated platform delivering production-ready OAuth 2.0/OIDC identity services with hardware-backed cryptography and audit-ready quality. As a Senior DevSecOps engineer you own the underlying cloud platform: GitOps-driven Kubernetes environments on Open Telekom Cloud and T-Cloud Sovereign, infrastructure as code, and a security-focused delivery pipeline. You build and operate the Kubernetes platform, manage infrastructure with Terraform/Terragrunt via ArgoCD, run stateful services such as PostgreSQL and Kafka, and integrate security controls like policy scanning, image signing, secrets management and mTLS. The role requires more than eight years of production Kubernetes and IaC experience, a security-first mindset, and fluent German and English.