Project Description The architect will design, document, and govern modern platform architectures, with a strong focus on PaaS, system modernization, technical governance, and large-system integration. Tasks Design and document large-scale IT system architectures Define and plan transition architectures for modernization programs Ensure architecture governance for systems with >15 FTE or >5M CHF budgets Define security architecture, integration patterns, and deployment models Evaluate technical risks, quality, and compliance Support engineering teams, product owners, and security teams Communicate architecture decisions to stakeholders Review architecture deliverables and ensure consistent documentation Mandatory Skills 8+ years' experience in large solution architecture Experience with architecture governance, ISDS, IKT security Expertise in synchronous integration (SOAP, REST, gRPC, SEDEX) Expertise in asynchronous integration (Kafka, AsyncAPI, Schema Registry, JMS/MQ) Deep knowledge of Microservice deployment (Docker, Kubernetes, Helm, ArgoCD) Strong communication and assessment experience German B1 or higher Nice-to-Have Skills Experience in DWH architectures Public administration project experience CI/CD (ArgoCD, GitOps) Cost modelling and platform sizing SThree_Germany is acting as an Employment Business in relation to this vacancy.