> Markdown version of [/jobs/ext/3908115-linux-system-administrator](https://www.wearedevelopers.com/jobs/ext/3908115-linux-system-administrator). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Linux System Administrator - **Company:** SchaefferAG - **Location:** Berlin, Germany (Remote available) - **Contract:** Permanent contract - **Skills:** Proxmox, Backup Devices, Cyber Security, Computer Networks, Linux, Open Source Technology, Ansible, Software Engineering, Software Systems, Virtualization Technology, Git, Containerization, Kubernetes, Information Technology, Free and Open-Source Software - **Published:** October 25, 2026 - **Apply:** https://www.adzuna.de/details/5938970678 ## About the Role * Professional experience in the administration of Linux systems and server infrastructures * Strong networking skills and an understanding of how various components of an IT landscape interact * Practical experience with virtualization and container technologies, particularly knowledge of Proxmox and Kubernetes * Experience with automation using Ansible and proficiency with Git * Ability to set up and configure IT hardware and workstation systems, and to systematically troubleshoot issues * Openness to open-source software and an interest in selecting and implementing suitable technical solutions * Experience with ERP systems, industrial IT, or production environments is a plus but not a requirement Work Style and Personal Skills * An independent, structured, and meticulous approach to work * A sense of responsibility and the ability to take initiative * An analytical approach to troubleshooting and the ability to develop pragmatic and sustainable solutions * Flexibility in switching between different tasks and the ability to maintain an overview * Enjoyment of collaborating with various departments and the ability to communicate technical matters clearly * Good command of German and the ability to engage in technical discussions in English * A solid foundation in system administration, practical experience, and a willingness to learn new topics are essential. ## Description We are seeking an experienced Linux generalist who can independently operate and further develop the existing IT infrastructure, systematically resolve technical issues, and handle practical IT tasks directly on-site. At Schaeffer AG, the position involves independently managing and further developing the IT infrastructure. This role combines traditional system administration with modern virtualization, automation, and open-source technologies. Working closely with software development and production, you will ensure that systems, applications, and computer-controlled manufacturing equipment interact reliably. Schaeffer AG develops many of its software solutions in-house, operates with short decision-making paths, and implements technical improvements immediately. The position therefore offers a diverse range of responsibilities with creative freedom and the opportunity to actively help shape the IT infrastructure of a manufacturing company. Responsibilities Operate and further develop the IT infrastructure * Independently administer and further develop the Linux-based IT infrastructure * Manage the server environment, the Proxmox cluster, and the Kubernetes cluster virtualized on it * Responsibility for networking, storage, backups, and IT security to ensure reliable operations * Automating installations and configurations with Ansible, as well as supporting the deployment of services via Helm * Analyzing issues, identifying root causes, and implementing sustainable solutions * Planning and executing updates, migrations, and other improvements to IT systems Connecting infrastructure, applications, and production * Ensuring the reliable interaction between servers, applications, and computer-controlled production systems * Providing technical support for the in-house ERP system, Adempiere * Working closely with the software development team and assisting with the integration of suitable open-source solutions * Coordinating the small admin team consisting of internal team members and external service providers Handling hands-on IT tasks * Setting up and maintaining employee workstations, computers, and peripheral devices * Assisting employees with technical issues and handling IT tickets as they arise * Hands-on maintenance of hardware, network components, and the connection of technical devices directly on-site * Structured handling of technical challenges, as well as reliable implementation and oversight of projects