Group Network and Systems Administrator

Our client, the owner of several companies and prominent brands across a variety of industry sectors, is seeking to employ an experienced Group Network and Systems Administrator to join their Head Office team based in City Deep, Johannesburg.

This role is critical to ensuring stable, secure, and high-performing network and server environments across all group sites. The successful candidate will be hands-on, technically strong, highly organised, and able to take ownership of network operations, security, and infrastructure maintenance while supporting group-wide IT initiatives.

An awesome opportunity awaits an A-player who thrives in a fast-paced environment and is passionate about building reliable, scalable IT infrastructure.

Requirements:

• Matric Certificate

• A+ / N+ – Microsoft Certificate / Engineer

• MCITP

• Network Security+

• Diploma in IT Systems Administration (NQF Level 4/5 or equivalent)

• Minimum 5+ years’ experience in IT Administration and Network Management

Technical Expertise

• TCP/IP, DNS, DHCP, VLANs, routing protocols

• Firewalls, switches, wireless infrastructure

• VPNs (site-to-site and client)

• Mikrotik RouterOS

• Microsoft Active Directory & Office 365

• Windows Server 2019/2022 and Windows 10/11

• Hyper-V Virtualization

• Network and server monitoring tools

• Microsoft 365 (Teams, One Drive, SharePoint)

Responsibilities, but not limited to:

• Manage and maintain LAN, WAN, VPN, VLAN, Wi-Fi, and Internet connectivity across all group sites

• Monitor network and server performance, troubleshoot issues, and resolve service tickets

• Configure, maintain, and document switches, routers, firewalls, access points, and cabling

• Support hybrid environments and cloud connectivity (Office 365 / Azure)

• Implement and maintain network and server security, including firewalls, access controls, patching, and secure remote access

• Identify risks and proactively manage network and server security threats

• Plan and execute network and server upgrades, migrations, and maintenance

• Ensure backups are completed, tested, documented, and restored when required

• Manage user accounts and access levels on servers and systems

• Maintain and optimise virtual machine (VM) environments and server performance (CPU, RAM, storage)

• Perform regular failover and disaster recovery testing

• Manage and respond to network and server emergencies

• Liaise with service providers, vendors, and contractors

• Assist with group-wide IT projects and mentor junior IT staff