Senior Network Administrator

SUMMARY:
My client is looking for a senior‑level Network Administrator who thrives on solving complex infrastructure challenges.
This is a hands‑on role for someone who enjoys ownership, stability, and building resilient systems.
Ideal for experienced IT professionals who want long‑term impact rather than short‑term firefighting.

POSITION INFO:

Job Description:

My client operates a large, established IT environment supporting hundreds of internal users across multiple business units. The Senior Network Administrator will play a critical role in keeping core systems secure, reliable, and scalable.
 
This role sits at the heart of the IT function and offers real ownership, from designing and maintaining networks to ensuring business continuity across servers, cloud services, and security layers. You’ll work closely with internal stakeholders, not external clients, focusing on stability, optimization, and long‑term improvements.
 
This is not a helpdesk role. It’s suited to someone who enjoys deep technical work, autonomy, and being the go‑to person for critical IT systems.

 
Key responsibilities include:

• Managing and maintaining enterprise networks (routing, switching, VPNs)
• Administering Windows Server environments, including Active Directory and permissions
• Supporting Microsoft 365 services (Exchange, Azure Active Directory)
• Ensuring network security, backups, disaster recovery, and uptime
• Troubleshooting complex infrastructure issues across servers and networks
• Contributing to continuous improvement, documentation, and best practices

• Minimum 5+ years’ experience in IT administration / network administration
• Strong hands‑on knowledge of TCP/IP, DNS, DHCP, VLANs and routing protocols
• Solid experience with Windows Server (Server 2022 or similar)
• Microsoft 365 administration (Exchange, Azure AD)
• Network security, backups, and recovery planning
• Experience with hardware, software, and VOIP environments
• Strong problem‑solving skills with the ability to work under pressure
• Comfortable taking ownership and accountability in a senior role

• Diploma in IT Systems Administration (NQF Level 4/5 or similar)
• Relevant certifications such as A+, N+, Microsoft certifications, MCITP, or Network Security+