Network Administrator, Johannesburg

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 andreporting standards, and contributing to knowledge sharing within a highly professional enterprise setting.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 issuesComfortable 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 scriptingAdditional 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 travelResponsibilities

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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