Senior Network & Systems Administrator

MID616

Location: Johannesburg South
Employment Type: Permanent

A large multi-site group is seeking an experienced Senior Network & Systems Administrator to manage, secure and optimise enterprise network and server environments.

Key Responsibilities

• Manage LAN, WAN, VPN, VLAN, Wi‑Fi and Internet connectivity across multiple sites
• Configure and maintain routers, switches, firewalls, wireless infrastructure
• Server administration: Windows Server 2019/2022, Active Directory, file/share permissions
• Microsoft 365 & Azure AD (Exchange, Teams, SharePoint, OneDrive)
• Network security, backups, disaster recovery & business continuity
• Monitor performance, troubleshoot escalated issues, manage emergencies
• Support hybrid cloud/on‑prem environments
• Maintain documentation, firmware updates, patching and b...