Network Administrator

Recruiter:

Data Centrix

Job Ref:

JHB007080/Nondu

Date posted:

Thursday, May 21, 2026

Location:

Johannesburg, South Africa

SUMMARY:
A leading organisation in the automotive industry is seeking a VOIP-focused Network Administrator with extensive VOIP systems knowledge and hands-on experience within a structured, governance-driven enterprise environment. While supporting and maintaining the broader enterprise network — including Cisco Meraki switching and WiFi, VeloCloud SD-WAN, and multi-vendor platforms — your primary responsibility will be to stabilise, enhance, and support the VOIP environment at both operational and project level. You will execute voice and network upgrades, provide first- and second-level support with a strong voice focus, ensure optimal call quality and performance, and operate strictly within established change management frameworks. Working closely with senior network engineers, you will play a critical role in maintaining voice service continuity, supporting documentation and reporting standards, and contributing to knowledge sharing within a highly professional enterprise setting.

POSITION INFO:
Requirements

CCNA certification (essential) with a minimum of 3+ years’ network infrastructure experience
Advanced knowledge and experience with VOIP.
Strong routing & switching fundamentals with solid understanding of TCP/IP and firewall basics
Experience working in multi-vendor enterprise network environments
Proven hands-on exposure to Cisco networking equipment, basic firewall configuration, and network monitoring tools
Strong troubleshooting methodology and ability to resolve complex network issues
Comfortable operating within structured governance and change management frameworks
Detail-oriented with strong problem-solving, communication, and documentation skills
Advantageous: SD-WAN (VeloCloud), VoIP (SIP/RTP/QoS), Azure/AWS cloud networking, Cisco Meraki wireless, automation tools, basic Python or PowerShell scripting
Additional certifications such as Network+, Security+, PCNSA, or vendor-specific credentials are beneficial
Willingness to work in a 3-month fixed-term contract role within an automotive enterprise environment, including possible on-call rotation, occasional after-hours support, and limited travel

Responsibilities

Projects & Implementation

Execute network infrastructure projects
Perform equipment installations and configuration deployments
Support network migrations and technology implementations
Work under senior guidance in line with project specifications

Maintenance

Conduct scheduled and preventive maintenance
Apply firmware and configuration updates
Ensure optimal performance of network infrastructure components

Technical Support & Knowledge Transfer

Provide first- and second-level network support
Troubleshoot routing, switching, and connectivity issues
Document solutions and contribute to knowledge sharing

Critical Issue Management

Respond to incidents within defined SLA frameworks
Assist with troubleshooting and escalation
Participate in structured incident response processes

Reporting & Documentation

Maintain accurate network documentation and diagrams
Generate performance and operational reports
Contribute to standard operating procedure development

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