Senior network & system 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, Share Point, One Drive) 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 backups Mentor junior IT staff and liaise with vendors/service providers Minimum Requirements Matric 5+ years’ experience in IT Administr...