Senior Network & System Administrator

Midvaal Recruitment; Johannesburg; On-site; ZAR 334,800 - 558,000; Full time

Benefits offered by this job

Provident Fund

Medical Aid Contribution

Job summary

A multi-site organization is seeking an experienced Senior Network & Systems Administrator in Johannesburg to manage, secure, and optimize network and server environments. The role involves maintaining connectivity, administering servers, and ensuring network security. Candidates should have over 5 years of relevant experience, strong knowledge of TCP/IP, and relevant certifications. The position offers a salary between R30,000 and R50,000, along with benefits like Provident Fund and Medical Aid contributions.

Qualifications

• 5+ years’ experience in IT Administration / Network Engineering.
• Strong hands-on experience with TCP/IP, DNS, DHCP, VLANs.
• Experience with Microsoft Active Directory & Office 365.

Responsibilities

• Manage LAN, WAN, VPN, VLAN, Wi‑Fi and Internet connectivity.
• Configure and maintain routers, switches, firewalls.
• Monitor performance and troubleshoot escalated issues.

Skills

TCP/IP

DNS

DHCP

Routing protocols

Windows Server

Office 365

Network security

Problem-solving

Communication skills

Education

Diploma in IT Systems Administration (NQF 4/5)

Certifications: A+ / N+, MCITP, Network Security+

Tools

Windows 10/11

Mikrotik RouterOS

Job description

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 IT Administration / Network Engineering
• Strong hands‑on experience with TCP/IP, DNS, DHCP, VLANs, routing protocols
• Windows Server & Windows 10/11 environments
• VPNs (site‑to‑site & client), Mikrotik RouterOS, firewalls
• Microsoft Active Directory & Office 365
• Certifications: A+ / N+, MCITP, Network Security+
• Diploma in IT Systems Administration (NQF 4/5) advantageous

Key Competencies

• Advanced server & network knowledge
• Strong problem‑solving and communication skills
• High attention to detail, organised and dependable
• Ability to work under pressure and multitask
• Ownership mindset, proactive and service‑driven
• Team player with a growth mentality

Remuneration Package:

Basic salary of R30 000 – R50 000 depending on experience

Provident Fund & Medical Aid Contribution

Kindly send detailed CV, Certificates, and ID copy to [e-mail]

Use reference number MID616 in email subject line