Senior Network & System Administrator

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 backups Mentor junior IT staff and liaise with vendors/service providers Minimum Requirements Matric 5+ years’ experience in ...