Remote / Nearhsore
Job-ID:
73080
Job veröffentlicht am:
22-04-2026
Zusammenfassung
Role title: Senior Software Engineer — KVM Virtualization (Cloud Hypervisor / QEMU / Libvirt) & Gardener Kubernetes Platform
Seniority: Senior Software Engineer — 4+ years experience
Work model: 100% Remote (APAC time zone coverage)
Contract period: May 1, 2026 – March 31, 2027
Estimated effort: 2880 hours total (engagement); 2 positions
Role Summary
We are seeking Senior Software Engineers with strong Linux OS, KVM virtualization, and Gardener Kubernetes expertise to provide expert-level support and consulting. You will troubleshoot complex production issues, optimize performance, harden systems, and strengthen integration across Gardenlinux, KVM-based virtualization (Cloud Hypervisor/QEMU/Libvirt), and Gardener-managed Kubernetes clusters.
Key Responsibilities
1) Gardenlinux (Debian-based OS)
- Configure, deploy, and maintain Gardenlinux-based environments
- Troubleshoot OS-level issues (kernel, boot, packages, system services)
- Debug custom image builds and runtime behavior
- Provide recommendations for performance tuning and security hardening
2) KVM Virtualization Stack (Cloud Hypervisor, QEMU, Libvirt)
- Configure and integrate KVM-based virtualization environments
- Analyze and resolve hypervisor/VM-level incidents
- Optimize performance across compute, networking, and storage
- Debug and tune Cloud Hypervisor and Libvirt configurations
3) Gardener Kubernetes Platform
- Troubleshoot incidents in Gardener control plane and shoot clusters
- Perform root cause analysis for provisioning, scaling, and upgrade failures
- Review configurations and propose improvements
- Support integration between Gardener, Gardenlinux, and KVM-based nodes
Required Skills & Experience
Gardenlinux / Linux
- Strong hands-on expertise with Debian-based Linux
- Kernel configuration and low-level troubleshooting (boot/perf/kernel)
- Experience with OS image customization and build pipelines
- Strong knowledge of systemd, package management, and OS hardening
- Familiarity integrating OS image build/deployment into CI/CD
KVM / Virtualization
- Advanced understanding of KVM, QEMU, and Libvirt architectures
- Experience configuring/troubleshooting Cloud Hypervisor
- Deep knowledge of virtualization:
- Networking (bridges, VLANs, SDN concepts)
- Storage (NFS)
- Hardware virtualization fundamentals, including NUMA alignment
- Automation/scripting skills in Go, Python, and/or Bash
- Host performance tuning and low-level debugging experience
Kubernetes / Gardener
- Strong Kubernetes internals knowledge (control plane, networking, scheduling)
- Hands-on experience with Gardener (seed/shoot operations and troubleshooting)
- Cluster lifecycle management: upgrades, node troubleshooting, scaling
- Observability proficiency: Prometheus (and ideally Perses)
- Ability to lead/author incident RCA and contribute to post-mortems