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

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.