Systems/Networks Administrator (Ops Specialist)

Hire Resolve; Pretoria; On-site; ZAR 800,000 - 1,000,000; Full time

Benefits offered by this job

Competitive salary based on experience

Job summary

A leading IT solutions provider in Pretoria is seeking a highly skilled Senior Systems/Network Administrator. The role requires expertise in Linux command-line environments, comprehensive management of both Linux and Windows servers, and a deep understanding of network security. Ideal candidates will possess a Bachelor's degree in IT, relevant certifications, and demonstrated experience in technical management. This position offers a competitive salary based on experience and the opportunity for career growth.

Qualifications

• Extensive technical management experience, preferably in a related industry.
• Advanced knowledge of IT Infrastructure innovation and integration.
• Familiarity with basic SQL, database design, and working with data architects.

Responsibilities

• Provide expert-level administration for Debian and RedHat distributions via CLI.
• Manage and maintain Windows servers and provide user desktop support.
• Implement ITIL-based best practices for asset management.

Skills

Linux (CLI Expert)

Active Directory

Network Management

Security & Configuration

Firewall Administration

Performance Monitoring

Storage Management

Virtualization

Documentation

Education

Bachelor's Degree in Computer Information Systems

Required Certifications (A+, N+, MTCNA)

Linux+/LPIC1, Server+

Tools

Postgres

Oracle

MariaDB

Zabbix

Docker

Kubernetes

Job description

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.

  • Advantageous: Experience with Hyper‑V clusters, VMWare vSphere, Docker, and Kubernetes.

• Database Support: Provide basic support (backups, restores, minor SQL queries) for Postgres, Oracle, and MariaDB. Collaborate with DBA teams.

  • Advantageous: Oracle Data Pump and TNS Listener troubleshooting.

• Office & Asset Management: Implement ITIL‑based best practices (ITSM). Manage assets (ITAM), including procurement, supplier negotiation, warranties, and SLAs.

• Soft Skills & Documentation: Write support/training documentation. Maintain strong written/verbal English communication. Work independently, manage multiple priorities, and collaborate effectively with interdepartmental teams (e.g., Finance, Audit). Be eager to learn new technologies.

  • Advantageous: Familiarity with JIRA and Confluence.

Minimum Requirements

• Education: Bachelor's Degree in Computer Information Systems, Management Information Systems (MIS), or a similar field.

• Required Certifications (or equivalent):

  • A+, N+

  • MTCNA

  • ICND1, UBWA

  • Linux+/LPIC1, Server+

  • MCSA: Windows Server 2016

• Extensive technical management experience, preferably in a related industry.

• Advanced knowledge of IT Infrastructure innovation and integration.

• Methodologies: Full understanding of the IT Software Development Lifecycle (SDLC).

• Database Knowledge: Familiarity with basic SQL, database design, and working with data architects.

• Certifications: LPIC2, MCITP, MTCRE, CCNA, MCSE: Core Infrastructure, ITILv4, Security+.

• Methodologies: Experience with ITIL and AGILE Methodologies.

Benefits

• Competitive salary based on experience (salary can potentially be more based on experience/skills)

IFyou meet the above requirements and want to make a career‑changing move, apply today by emailing your CV to [e-mail]