GMX, WEB.DE & mail.com

System Engineer - Virtualization (f/m/d)

Stellenbeschreibung:

System Engineer - Virtualization (f/m/d)

GMX, WEB.DE & mail.com

Are you passionate about virtualization, Linux systems, and automation? As a Systems Engineer, you’ll help shape a highly available HCI platform that powers one of Europe’s largest email services, serving over 42 million users across WEB.DE, GMX, and mail.com. This platform delivers cloud‑like virtualization "on‑prem" with GitOps‑style management, elastic workloads, and transparent "VM to Kubernetes" interoperability through KubeVirt. Your work enables application teams to run workloads securely, efficiently, and with predictable performance across data centers, while laying the foundation for future Kubernetes‑native platform services.

Are you ready to take ownership of virtualization architecture for a platform serving millions? Do you thrive on performance challenges and building scalable clusters?

Responsibilities

  • Design, implement, and operate a Harvester‑ and Kubernetes‑based virtualization platform.
  • Integrate distributed storage and manage compute resources across clusters.
  • Automate provisioning, lifecycle, troubleshooting, and monitoring using Ansible, GitOps pipelines, and APIs.
  • Conduct migrations, performance tuning, benchmarking, and incident response across virtualization estates.
  • Collaborate with platform, networking, and storage teams to ensure robust end‑to‑end infrastructure services.

Qualifications

  • Strong understanding of virtualization technologies (Harvester, KubeVirt, QEMU/KVM, Proxmox, VMware, or similar).
  • Experience with Kubernetes ecosystems, ideally including Helm, CNI, CSI, CRDs, and GitOps workflows.
  • Knowledge of distributed storage systems, especially Longhorn (or Ceph).
  • Proficiency with Linux systems, debugging, monitoring, and performance tuning.
  • Automation experience using Bash, Ansible, Python, Puppet, and infrastructure‑as‑code principles.

Benefits

  • Lived corporate culture : Flat hierarchies, a culture of respect and appreciation, signatories of the Diversity Charter, open communication, and no dress code.
  • Wide range of further training : Internal and external training opportunities, LinkedIn Learning, language courses, talent development programs, conferences, and mentoring.
  • TEC‑Campus : Free choice between Linux, Mac, or Windows, slack days, conferences, lecture series, courses, open‑source projects, community meetups, and user groups.
  • ❤️ Active healthcare : Wellpass, free internal sports and fitness classes, health days, family & care support services, discounts at fitness centers, mental health first responder, fresh fruit and drinks for free.

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Stelleninformationen

  • Veröffentlichungsdatum:

    04 Jan 2026
  • Standort:

    Karlsruhe
  • Typ:

    Vollzeit
  • Arbeitsmodell:

    Vor Ort
  • Kategorie:

  • Erfahrung:

    2+ years
  • Arbeitsverhältnis:

    Angestellt

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