Unix System Administrator - High-Security IT Operations

At Data-Warehouse GmbH, you will work in high-security, mission-critical IT environments where stable systems, precise operations, and a strong focus on security are essential.

We are looking for a Unix System Administrator (m/f/d) with a strong hands-on approach, solid troubleshooting skills, and the motivation to keep complex IT environments secure, reliable, and well-documented.

You will join an experienced international team and contribute to systems that support demanding stakeholders and security-sensitive projects., In this role, you will support the operation, administration, and continuous improvement of Unix/Linux-based systems, primarily in Red Hat environments., * Administer Unix/Linux-based operating systems, including troubleshooting, installation, and setup.

• Maintain compliance with security policies, including patch management and vulnerability remediation.

• Perform backups and recovery using tools such as Netbackup.

• Basic hardware management including racking, card/disk replacements, attaching to network(s), etc.

• Installing third-party software following the instructions provided.

• Document architecture, procedures, and operational guidelines for system administration.

• Willingness to learn and acquire new skills (including acquiring relevant certifications).

• Willingness to work on a rotating schedule (to cover the service hours) and to work outside of regular working hours (usually one Saturday per month)., You will work in an environment where your contributions have a real impact: systems must be secure, available, well-maintained, and compliant. Your work helps ensure that critical IT infrastructures remain stable and trustworthy., Due to the sensitive nature of our projects and the compliance requirements of our stakeholders, this position is based entirely on-site in northern Munich. Remote work is not an option.

Security clearance is required. Candidates should either already have the necessary clearance or be willing to go through the process.

• Strong expertise in Unix/Linux system administration (RHEL8, RHEL9, or similar).
• Strong troubleshooting skills for Unix/Linux systems.
• Working with ticket system for incidents, problems, change management and configuration management.
• Certifications such as RHCE (Red Hat Certified Engineer) or similar are an advantage.
• Good knowledge of English-both spoken and written.

Nice to have

• Bachelor's or Master's degree in IT
• Knowledge of ITIL
• Ability to Write Shell Scripts
• Knowledge of container technology, especially Rancher
• VMware/KVM knowledge
• Windows Server Knowledge

What We Offer

• Permanent employment at a stable, owner-managed German IT company
• Competitive salary and performance-based bonus
• Work on high-security IT and cybersecurity-related projects
• Individual training and development, including opportunities for certification
• German courses, if needed
• Relocation Support
• Meal allowance through our on-site cafeteria
• Sports and fitness benefits, including company soccer every two weeks
• A work environment based on trust, responsibility, and long-term cooperation

About Data-Warehouse GmbH Data-Warehouse GmbH is an owner-managed German IT company with more than 35 years of experience in cybersecurity, information management, software development, and process optimization. We provide solutions for high-security environments and combine technological excellence with long-term project expertise. We support people who take on responsibility, expand their knowledge, and want to develop innovative IT solutions together with us-in an environment where trust, personal responsibility, and a genuine handshake matter.