Job Description

IT Network Administrator (2nd Line Support) (Sandton Onsite) IT - Support
Johannesburg - Gauteng - South AfricaENVIRONMENT:A highly technical IT Network Administrator is sought by a cutting-edge Digital Supply Chain Specialist to join its 24-hour 2nd Line Support team. The role focuses on advanced troubleshooting, network administration and IT infrastructure optimisation, ensuring operational efficiency and minimal downtime. The ideal candidate will be responsible for escalated IT issues, network troubleshooting and deployments, as well as maintaining as-built documentation for system configurations. The ideal candidate must preferably be MCSA/MCSE/AWS/CCNA/CCNP Certified with 5 years' work experience in a similar role and be skilled in Active Directory, Windows 10/11, Linux (Ubuntu/CentOS), Microsoft 365, SIEM tools (Splunk, ELK, Graylog), WSUS, SCCM, Intune, Azure, VMware, Hyper-V, etc.DUTIES:Office IT Support & Troubleshooting

• Provide advanced 2nd Line IT support for software, hardware and network issues escalated from 1st Line Support.
• Diagnose and resolve complex IT problems, ensuring system reliability.
• Act as a key IT contact for internal teams, providing expert advice and solutions.
• Monitor network and IT infrastructure to proactively detect and resolve issues.

Deployment & Network Support

• Lead PC setup, software configurations and pre-deployment testing.
• Conduct network troubleshooting and optimisation to ensure secure, stable connectivity.
• Provide remote deployment support for software and hardware installations at customer sites.
• Manage and configure Active Directory, Group Policies, DNS, DHCP and VPNs.
• Optimise network performance and diagnose connectivity issues (e.g. slow speeds, packet loss).

Network Administration & Security -

• Maintain and troubleshoot LAN/WAN, VLANs, Firewalls, Routers and Switches.
• Manage firewalls (Cisco, Fortinet, MikroTik) and VPN configurations.
• Implement cybersecurity measures to protect network integrity and prevent threats.
• Utilise network monitoring tools (e.g. Zabbix, PRTG, SolarWinds) for real-time performance tracking.
• Assist in data protection, user access controls and IT security best practices.

Documentation & Process Improvement

• Develop and maintain detailed as-built documentation for network and system configurations.
• Document troubleshooting steps to improve the knowledge base and incident response efficiency.
• Continuously enhance IT operations by analysing past incidents and recommending improvements.

REQUIREMENTS:Preferred Certifications

• Microsoft Certified: Azure Administrator Associate (MCSA, MCSE). Or (AWS Certified).
• Cisco Certified Network Associate (CCNA) or higher (CCNP). Or (Juniper Network Certifications).
• CompTIA Network+ (Networking Fundamentals).
• ITIL Foundation (IT Service Management & Incident Response).
• Zabbix Certified Specialist (For monitoring system administration). Or (Similar).

Experience/Skills -

• 5 Years of experience in IT Support, Network Administration, or System Administration.
• Proven experience in troubleshooting escalated IT issues (2nd Line Support).
• Strong knowledge of network configurations, firewall management and security protocols.
• Hands-on experience with Active Directory (AD), Group Policies and Microsoft 365 Administration.
• Experience in troubleshooting Windows 10/11, Linux (Ubuntu/CentOS) and macOS systems.
• Experience in remote IT support tools (RDP, TeamViewer, AnyDesk, PowerShell).

Network & System Administration:

• Proficient in configuring and managing routers, switches and firewalls.
• Hands-on experience in LAN/WAN troubleshooting, VLAN setup and VPN administration.
• Strong knowledge of Wi-Fi networks, subnetting and IP addressing.
• Experience in server administration (Windows Server, Linux).
• Basic scripting knowledge (PowerShell, Bash, or Python) for IT automation.

Security & Monitoring:

• Understanding of Cybersecurity principles (Access Control, MFA, Security Audits).
• Knowledge of SIEM tools (Splunk, ELK, Graylog) and endpoint security solutions.
• Proficient in firewall management and intrusion detection systems.
• Familiarity with patch management and OS updates (WSUS, SCCM, Intune).

Cloud & Remote Support:

• Experience with cloud environments (Azure, AWS, Google Cloud).
• Managing virtualisation (VMware, Hyper-V, Proxmox).
• Supporting remote users via VPNs, cloud applications and remote desktop tools.

ATTRIBUTES:

• Problem-Solving & Troubleshooting Ability to diagnose and resolve complex IT issues quickly.
• Communication & Collaboration Can explain technical concepts to non-technical users.
• Initiative-Taking Attitude Proactively identifies, troubleshoots and resolves IT issues.
• Teamwork & Knowledge Sharing Works well in cross-functional teams and can mentor junior staff.
• Adaptability Keeps up with modern technologies, evolving IT needs and business changes.
• Documentation & Reporting Ability to write clear technical documentation and reports.

Apply for this Job

Datafin