Network Administrator

Datacentrix; Johannesburg; On-site; ZAR 400 000 - 600 000; Full time

Job summary

A leading technology services provider in Johannesburg is looking for a Network Administrator to manage and secure enterprise networks. You will lead security project implementations, respond to incidents, and coordinate with vendors. The ideal candidate needs a CCNA certification, at least 4 years of experience in network management, and skills in Python and PowerShell scripting. This role offers a dynamic work environment with opportunities for growth.

Qualifications

• Experience with enterprise network design and implementation is essential.
• Knowledge of security incident response procedures is required.
• Ability to configure and manage PaloAlto firewalls.

Responsibilities

• Implement security projects across the enterprise technology stack.
• Coordinate with vendors for technical support.
• Respond to security incidents and provide forensics.

Skills

Network automation and scripting (Python, PowerShell)

4+ years of network and firewall management

Security incident response and forensics

Multi-vendor environment management

LAN understanding and WiFi management

Education

CCNA certification

Cisco certification

Tools

PaloAlto firewalls

Cisco Meraki switching

VeloCloud SD-WAN

SIEM monitoring tools

Job description

Overview

Job title: Network Administrator

Job Location: Gauteng, Johannesburg

Deadline: December 01, 2025

Responsibilities

• Will be involved in Security project implementation
• Incident response
• Vendor coordination
• Technical support activities across enterprise technology stack including PaloAlto firewalls, Mellanox core switches, Arista routers, Saisei internet shaping, Cisco Meraki switching and WiFi infrastructure, and VeloCloud SD-WAN solutions.

Requirements

• CCNA certification, entry-level PaloAlto qualification
• 4+ years of network and firewall management
• Enterprise network design and implementation
• Multi-vendor environment management
• Security incident response and forensics
• Network automation and scripting (Python, PowerShell)
• SIEM and security monitoring tools
• LAN understanding, WiFi and switching management, PaloAlto firewall configuration, multi-vendor network troubleshooting, and core networking protocols
• VeloCloud SD-WAN management, Cisco certification, server technology expertise, cloud platforms knowledge, and network monitoring tools

Overall Responsibilities

• Will be involved in security project implementation, incident response, vendor coordination, and technical support across the enterprise technology stack including PaloAlto firewalls, Mellanox core switches, Arista routers, Saisei internet shaping, Cisco Meraki switching and WiFi infrastructure, and VeloCloud SD-WAN solutions.