Infrastructure Engineer (Windows & Linux, VMware/Virtuozzo, Proxmox) (JHB Onsite) at Datafin Recruitment

ENVIRONMENT:

• A South African cloud services provider seeks the technical expertise of an Infrastructure Engineer to fill a hands-on role where you will monitor, maintain, and troubleshoot the systems that keep its infrastructure running.
• You will check VMware, Virtuozzo and Proxmox cluster health, host status, datastore usage, and alerts; support Windows Server and Linux servers; escalate critical backup failures while diagnosing and repairing server and switch hardware faults.
• The ideal candidate must have practical experience across virtualization, backups, networking, and server administration in a live enterprise environment. You also need to be familiar with DNS, routing, firewalls, VPNs & comfortable working in a data center environment, including physical hardware work — rack/stack, cabling, connectors (DAC, SFP, fibre, QSFP), and component-level repairs (drives, servers, switches).

DUTIES:

Daily Operations & Monitoring –

• Check VMware, Virtuozzo and Proxmox cluster health, host status, datastore usage, and alerts.
• Review status and failures across Acronis Cyber Infrastructure, Cohesity, NSX-T, and vCloud.
• Review LogicMonitor / PagerDuty alerts.
• Monitor storage systems for capacity and performance issues.
• Monitor firewalls for alerts, VPN status, and interface health.

Infrastructure Support –

• Provision and manage virtual machines in VMware, Virtuozzo and Proxmox.
• Perform basic troubleshooting on hypervisor hosts and clusters.
• Support Windows Server and Linux servers.
• Assist with network troubleshooting (DNS, routing, NIC placement).

​​​​​​​Backups –

• Monitor Acronis and Cohesity backup jobs and resolve failures.
• Perform test restores (files, VMs, full systems).
• Validate backup integrity and report issues.
• Escalate critical backup failures.

​​​​​​​Network Support –

• Monitor firewalls and security alerts.
• Assist with VPN user troubleshooting (IPSec VPN, OA, PAS).
• Verify firewall rules and NAT configurations.
• Check WAN links and resolve basic connectivity issues.

​​​​​​​Patching & Maintenance –

• Review and apply Windows updates and Linux patches.
• Assist with VMware, Virtuozzo and Proxmox host patching (under supervision).
• Perform firmware updates on infrastructure hardware (under supervision).
• Execute routine maintenance (reboots, cleanup tasks).

​​​​​​​Hardware & Physical Infrastructure –

• Install, configure, and maintain HCI nodes.
• Work with networking cabling and connectors, including DAC cables, SFP, fibre, and QSFP transceivers.
• Diagnose and repair server and switch hardware faults.
• Replace failed drives and other hardware components.
• Support rack/stack, cabling, and physical hardware installations.

​​​​​​​Incident Response –

• Handle escalations from the VPS team.
• Troubleshoot VM performance issues.
• Investigate backup failures and storage alerts.
• Escalate to Senior Engineers with proper diagnostics when required.

​​​​​​​Project Assistance –

• Assist with VM migrations (VMware/Proxmox/Virtuozzo).
• Support infrastructure deployments and upgrades.
• Help with rack/stack, cabling, and initial hardware configuration.

REQUIREMENTS:

• Some hands-on exposure to VMware/Virtuozzo, Proxmox, or similar virtualization platforms.
• Good understanding of Windows Server and Linux administration.
• Familiarity with networking fundamentals (DNS, routing, firewalls, VPNs).
• Comfortable working in a data center environment, including physical hardware work — rack/stack, cabling, connectors (DAC, SFP, fibre, QSFP), and component-level repairs (drives, servers, switches).

​​​​​​​Advantageous –

• Exposure to backup/DR concepts and tools (Acronis, Cohesity, or similar).

ATTRIBUTES:

• Strong troubleshooting mindset and willingness to learn.
• Good documentation habits and clear communication skills.