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# (Senior) DevOps Engineer - Infrastructure & Security

- **Company:** Testsieger.de Vergleichsportal GmbH
- **Location:** Osnabrück, Germany
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** Proxmox, Amazon Web Services, Backup Devices, Bash Shell, Ubuntu (Operating System), Computer Literacy, Continuous Integration, Debian Linux, Linux, DevOps, Domain Name System (DNS), Github, Virtual Private Networks (VPN), Python (Programming Language), MySQL, Routing, RabbitMQ, Redis, Ansible, TCP/IP, Data Logging, Load Balancing, Grafana, Firewalls (Computer Science), Kubernetes, ZFS File System, Terraform, New Relic (SaaS), Docker
- **Published:** September 19, 2026
- **Apply:** https://www.adzuna.de/details/5889762032

## About the Role

* Mehrjährige Erfahrung im Betrieb von Linux-Serverumgebungen (Debian/Ubuntu) - du weißt, wie man Systeme auch ohne Assistenz von A nach B bringt
 * Fundierte Netzwerkkenntnisse: TCP/IP, Routing, DNS, Load Balancing, Firewall- und VPN-Administration
 * Nachweisbare Praxis in Infrastructure Security: Hardening, Access Control, Security Best Practices
 * Ansible in Produktion, Container-Orchestrierung (Nomad, Kubernetes oder vergleichbar), CI/CD-Pipelines
 * Erfahrung mit AWS oder einer vergleichbaren Public Cloud
 * MySQL-Administration in Produktion
 * Bash und Python - für Tooling, nicht nur für Einzeiler
 * Monitoring, Logging und Troubleshooting sind für dich Handwerk, nicht Kür
 * Plus: Terraform, RabbitMQ, Redis, Zero-Trust-Konzepte
 * Gutes Englisch in Wort und Schrift - unser Engineering-Team arbeitet international

## Description

* Du verantwortest den Betrieb unserer Linux-Serverlandschaft: On-Premise-Cluster (Proxmox, ZFS) und AWS
 * Du betreibst und härtest Netzwerk und Security: Firewalls, VPN, Zugriffskontrolle, Zertifikate, Hardening - inklusive der Netzanbindung an unseren größten Partner
 * Du automatisierst mit Ansible und hältst Infrastruktur versioniert, reproduzierbar und dokumentiert
 * Du betreust unsere Container-Plattform (Docker, Nomad, Traefik) und die CI/CD-Pipelines (GitHub Actions), damit die Teams sicher und schnell shippen
 * Du administrierst MySQL in Produktion: Backups, Performance, Recovery
 * Du baust Monitoring, Logging und Alerting aus (Grafana, New Relic) und führst Incidents zur Ursache
 * Du bist Sparringspartner für Engineering, Data und Product - und erklärst, warum Dinge so gebaut sind, wie sie gebaut sind


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