Senior Container Administrator

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.
• 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.