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Senior System Engineer (m/f/d) - Linux Infrastructure Specialist

Confidential company · Munich · Posted Jun 11, 2026

Public summary

We are seeking an experienced Senior System Engineer to take ownership of our Linux-based on-premises infrastructure, primarily focusing on Ubuntu servers and virtualization via Proxmox. The role involves deep system analysis, standardizing and documenting processes, and ensuring operational reliability. The ideal candidate has strong Linux administration skills, automation expertise, and the ability to communicate complex topics clearly in English. This position offers flexible work arrangements, a collaborative agile environment, and opportunities to impact the development of a leading IT monitoring product from a dynamic and growing tech company based in Munich.

Location and work setup

Location
Munich
Remote status
Remote
German requirement signal
No German Required Detected
Detected job language
English

Responsibilities

Own and maintain the reliability and operational readiness of a Linux on-prem infrastructure centered around Ubuntu and Proxmox virtualization. Analyze and document existing systems and processes to establish sustainable standardization and continuous compliance. Automate recurring problems following Infrastructure as Code principles using tools like Ansible, Terraform, and GitLab CI/CD. Collaborate cross-functionally, mentor less experienced team members, produce clear technical documentation, and support strategic data center projects alongside daily operations, including 3rd-level support when needed.

Qualifications

Several years of professional experience in Linux system administration with a focus on Ubuntu and shell scripting. Proficient in automation and CI/CD workflows using Ansible, Terraform, and GitLab CI/CD. Deep knowledge of virtualization technologies such as Proxmox VE or Qemu/KVM and Linux web/database stacks including Nginx, Apache, PostgreSQL, and Redis. Experience with Ceph clusters, ZFS, backup strategies (e.g., Proxmox Backup Server, Veeam), network firewalls like pfSense/OPNsense, and DNS security protocols. Strong project management skills, process discipline, fluent English communication abilities, and a teamwork-oriented mindset. Knowledge of container technologies, identity management systems, and public cloud administration is a plus.

Skills

Linux system administration Ubuntu Shell scripting Package management Ansible Terraform GitLab CI/CD Proxmox VE Qemu/KVM Nginx Apache PostgreSQL Redis Ceph ZFS (TrueNAS) Proxmox Backup Server Veeam pfSense OPNsense DNS security (SPF/DKIM/DMARC) Project management Technical documentation Team collaboration English communication