Data-Warehouse GmbH is an expanding software manufacturer and service provider. Over the last 20 years the company has developed into a system house with its own product portfolios in the area of holistic, high quality information management, information logistics and process optimisation, security and cyber strategy and compliance/data protection consulting. The job is a Senior Container Administrator role.  The environment to be managed is an air-gapped on-prem solution.  The expectation is that the candidate will also perform Unix/Linux administration activities. The job is located in the north of Munich (on site as no remote working is possible). German, British, Spanish or Italian nationality is required. **Tasks:** - Deploy, configure, and maintain Rancher-based container platform in an air-gapped environment. - Manage Kubernetes clusters, nodes, and workloads within the Rancher ecosystem. - Administer Unix-based operating systems, including performance tuning and troubleshooting. - Implement security hardening practices for containerized environments and Unix servers. - Automate system and container operations using scripting languages such as Ansible. - Ensure high availability, fault tolerance, and disaster recovery for containerized workloads. - Design and implement monitoring, logging, and alerting solutions for both Rancher and Unix infrastructure. - Collaborate with DevOps and development teams to support CI/CD pipelines and deployment workflows. - Maintain compliance with security policies, including patch management and vulnerability remediation. - Document architecture, procedures, and operational guidelines for system administration. ** ** **Requirements/Knowledge/Experience:** - Proven experience in Rancher container orchestration and Kubernetes administration. - Strong expertise in Unix/Linux system administration (RHEL8, RHEL9, or similar). - Knowledge of air-gapped deployments and best practices for secure environments. - Proficiency in infrastructure automation using Ansible, Terraform, or similar tools. - Hands-on experience with monitoring tools such as Prometheus, Grafana, or Loki. - Strong troubleshooting and performance tuning skills for both containers and Unix systems. - Familiarity with container security tools and practices. - Experience working with containerized databases and persistent storage solutions. - Experience with version control and CI/CD pipelines (Git, Jenkins, ArgoCD, etc.). - Certifications such as CKA (Certified Kubernetes Administrator), RHCE (Red Hat Certified Engineer), or similar is an advantage. - Understanding of SIEM tools and security event monitoring focused on containers is an advantage. - Working with ticket system for incidents, problems, change management and configuration management. - Strong background in IT (working in IT). - IT related Bachelor or Master’s degree is a plus. - Any knowledge of ITIL would be useful. - Knowledge of DNS and load balancers. - Good Unix/Linux knowledge. - Knowledge of BMC Helix would be nice to have. - VMWare knowledge would be nice to have. - The candidate should also be able to speak and write in English. - Security check (Ü2) available or willing to go through the process to acquire it. - Willingness to learn and acquire new skills (including acquiring relevant certifications). Willingness to work in a rotation system (to cover the service hours) and to work outside working hours (usually one Saturday per month) **Your Soft Skills:** High team spirit Reliability, punctuality ** ** **Our offer:** We offer a safe, trustful and long-term working environment with very good working conditions in an exciting working environment Company fitness and other company events Clear and open internal communications and fast decisions Cultural and international mixture of leading experts in their areas Highly innovative environment with a personal development plan We look forward to welcoming you to our team and shaping the future.