IT Network & Infrastructure Administrator

IT Network & Infrastructure Administrator – Johannesburg.

Expérience

This is a strong opportunity for an experienced IT professional with solid hands-on networking experience who enjoys keeping business-critical systems connected, secure, stable and running properly. The client is looking for someone who is not only comfortable with general infrastructure support, but who has a strong networking backbone. You should be confident working across LAN, WAN, VPN, VLANs, routers, switches, firewalls, wireless infrastructure and Mikrotik environments. You will support a well-established group with multiple operating sites, where reliable connectivity is essential to daily operations. This role suits someone who can troubleshoot properly, take ownership of network issues, support server and Microsoft environments, and keep infrastructure running with as little disruption as possible. The environment includes routing and switching, VPNs, VLANs, Mikrotik RouterOS, firewalls, wireless infrastructure, Active Directory, Microsoft 365, Azure AD, Windows Server, Hyper-V and secure remote access. Salary: R30,000 to R50,000 CTC per month.

Responsabilités

Manage, maintain and improve the company’s network and IT infrastructure across multiple sites Support and troubleshoot LAN, WAN, VPN, VLAN, Wi-Fi and internet connectivity Configure, maintain and troubleshoot routers, switches, access points, firewalls and related network hardware Manage and support Mikrotik routers and RouterOS configurations Monitor network performance, connectivity, uptime and security risks Troubleshoot network outages, slow connectivity, routing issues, firewall rules, VPN access and wireless problems Maintain secure connectivity between branches, remote users, service providers and cloud environments Support secure remote access for staff and contractors

Administer server environments including Active Directory, file permissions and Windows Server 2019/2022 Support Microsoft 365 services including Exchange, Azure Active Directory, Teams, OneDrive and SharePoint Support Hyper-V virtual environments Manage backups, recovery processes, patching, firmware updates and failover testing Identify infrastructure and network risks early to reduce downtime and improve security Assist with network upgrades, infrastructure improvements, hardware replacements and migrations Work with vendors and service providers where required Keep network diagrams, configurations, procedures and documentation accurate and up to date Guide junior team members on infrastructure and network-related tasks Manage, maintain and improve the company’s network and IT infrastructure across multiple sites Support and troubleshoot LAN, WAN, VPN, VLAN, Wi-Fi and internet connectivity Configure, maintain and troubleshoot routers, switches, access points, firewalls and related network hardware Manage and support Mikrotik routers and RouterOS configurations Monitor network performance, connectivity, uptime and security risks Troubl

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