Senior Infrastructure Engineer

• Linux System Administration: Operate and maintain Linux infrastructure based on Debian and Rocky Linux.

• Virtualization & Cluster Management: Operate and maintain Proxmox VE clusters and virtual machines.

• Virtual Machine Lifecycle: Manage the full lifecycle of virtual machines, including provisioning, migration, upgrade, and decommissioning.

• System Updates & Upgrades: Plan and perform Linux and Proxmox updates/upgrades, including major version upgrades.

• Production Maintenance Planning: Plan and execute infrastructure maintenance activities in production environments.

• Data Protection & Disaster Recovery: Manage VM/server backup and restore processes and validate recovery procedures.

• Infrastructure Troubleshooting: Troubleshoot infrastructure issues across compute, storage, operating systems, and networking.

• Automation & Scripting: Automate repetitive operational tasks using Ansible and scripting.

• Infrastructure Migrations: Participate in infrastructure migrations and production changes.

• Change Management & Risk Mitigation: Prepare change plans, validation steps, and rollback procedures for high-risk infrastructure changes.

• 5+ years of hands-on experience with Linux infrastructure.

• Strong knowledge of Debian / Rocky Linux.

• Hands-on production experience with Proxmox VE, KVM/QEMU and Proxmox clusters.

• Good understanding of cluster concepts including quorum, Corosync and failure scenarios.

• Strong practical experience with ZFS, including pools, datasets, snapshots, replication, disk replacement and failure recovery.

• Experience with VM migration and live migration.

• Experience performing Linux and Proxmox updates/upgrades.

• Strong Linux administration knowledge including systemd, package management, boot process, filesystems, LVM, RAID, mounts, permissions, SSH and sudo.

• Good understanding of Linux networking: TCP/IP, routing, VLANs, bonding, DNS, MTU and firewall basics.

• Hands-on experience with backup and restore, including recovery after VM or server failures.

• Understanding of backup, snapshot and replication concepts.

• Experience with Proxmox Backup Server or similar solutions.

• Practical experience with Ansible, Bash and Git.

• Strong troubleshooting skills for CPU, memory, disk I/O, filesystem and network issues.

• Experience with shared or distributed storage systems, such as Ceph, SAN, iSCSI, NFS or similar solutions.

• Python.

• Monitoring systems such as Zabbix, Prometheus, VictoriaMetrics or Grafana.

• Experience with physical servers and data center hardware.

• Hardware RAID / HBA.

• IPMI / iDRAC / iLO.

• Experience participating in disaster recovery or infrastructure migration projects.

Soft Skills:

• Strong ownership and responsibility.

• Careful approach to production changes.

• Ability to troubleshoot complex infrastructure issues independently.

• Good documentation and communication skills.

• Focus on automation, reliability and operational simplicity.