Systems / Networks Administrator (Ops Specialist)
Premium Ad IT/Computer - Other IT/Computer Pretoria FULL TIME Job Summary A company that provides integrated identity and payment solutions, specializing in secure document and card manufacturing, biometric identification systems, and digital identity verification, is seeking a highly skilled and experienced Senior Systems/Network Administrator to join their team. This role is for a technical expert who thrives in command-line environments and possesses a holistic understanding of all interconnected system components. GUI-driven administrators need not apply.Responsibilities: * Linux (CLI Expert): Provide expert-level administration for Debian (Ubuntu) and RedHat (Alma, Rocky) distributions. Provision and configure systems (servers, clusters, laptops) via the CLI. Manually install and configure LOB applications using config files (YAML, JSON). Monitor, troubleshoot system performance, and analyze logs/processes. * Windows Server Ownership: Manage and maintain Windows servers, including Active Directory (AD/LDAP), DHCP, DNS, NPS, Certificate Services, IIS (with Dot Net/ASP/WebSockets), and Hyper-V. Provide user desktop support and manage file servers. * Network Topology Management: Work with Core/Distribution/Access switching environments (Edgecore, MikroTik, UniFi, D-Link). * Security & Configuration: Manage VLANs and implement modern tunneling (ZeroTier, WireGuard). Proficiently configure iptables/nftables, firewalld, and network bonding. * Firewall Administration: Hands-on configuration and troubleshooting of FortiGate, MikroTik, and pfSense. * Performance & Monitoring: Maintain network uptime, ensure critical service availability, and utilize monitoring applications (Zabbix, Nagios, etc.). IPAM/DCIM experience is essential. * Storage Management: Manage SAN, NAS, DAS, LVM, and LUN infrastructure (HPE SAN, Synology, FreeNAS). Perform HBA bonding, SCSI configuration, and storage performance optimization. * Hardware & HA: Assemble, upgrade, and troubleshoot server hardware. Configure RAID and other High Availability (HA) methods. + *Advantageous:* Experience with Veeam, Quest NetVault, and LTO-tape technology. * Virtualization & Clusters: Administer Xen-based hypervisor clusters (XCP/Xen) and Hyper-V. Deploy, maintain, and troubleshoot virtualized environments, managing cluster performance and failover.…
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