IT Systems Administrator (Infrastructure & Networking)

Quick Facts

• Role: IT Systems Administrator (Infrastructure & Networking)

• Work model: On-site (Gießen), 40 hours/week

• Employment: Full-time permanent position

• Start date: 01.01.2027

• Salary: 45,000–65,000 EUR/year

Description

You will help ensure the stable and secure operation of IT systems with a focus on infrastructure and network services. The role includes server, network, and Kubernetes administration, along with monitoring, troubleshooting, and backup/recovery management.

Responsibilities

• Maintain stable and secure system operation through regular maintenance, patch management, and security measures

• Administer and monitor network components and services including firewalls, VPN, DNS, and DHCP

• Monitor system availability and performance; analyze and resolve technical issues independently

• Plan, execute, and regularly review backup and recovery processes

• Install, configure, and administer hardware/software and central IT services

• Operate, administer, monitor, and further develop Kubernetes environments in close collaboration with the development team

• Support employees with IT-related questions and issues; manage internal IT systems

• Document IT infrastructure and processes and actively contribute to infrastructure projects and technical improvements

Requirements

• Completed IT training or degree or comparable qualification

• Willingness to work outside business hours and on weekends

• Several years of practical experience in system administration and operating IT infrastructures

• Solid knowledge in administering Windows and Linux servers

• Good networking administration knowledge (firewalls, VPN, DNS, DHCP, TCP/IP)

• Experience with virtualization (VMware or Proxmox)

• Knowledge of securing, maintaining, and monitoring IT systems including patch and backup management

• Practical Kubernetes cluster experience, ideally in productive operation

• Independent, structured, solution-oriented working style and ability to take on diverse responsibilities in a small team

• Analytical skills, teamwork, and strong communication

• Good German and English skills

Benefits

• Modern work environment with flexible structures and a motivated team

• Large modern office with coworking space and good public transport access

• Benefit program including company pension provision

• Flexible working hours and homeoffice option

• Free beverages