Network / Security Administrator - Centurion

3 weeks ago

Pretoria, South Africa Datafin Full time

Overview A Software Company with a focus on digital transformation is seeking a motivated and detail-oriented Network / Security Administrator with over 2–4 years of hands‑on experience in configuring, maintaining, and securing enterprise networks. CCNA with proven expertise in LAN / WAN infrastructure, firewall policies, VPN deployment, and network monitoring. Adept at identifying vulnerabilities, optimizing network performance, and responding to incidents in compliance with best practices and organizational policies. Duties Configure and troubleshoot Cisco routers and switches in enterprise environments. Maintain network security through ACLs, firewall rules, and intrusion prevention systems. Manage VPN access for remote users and branch offices. Monitor network traffic and performance to detect anomalies or malicious activity. Implement routine security patches and firmware updates on network devices. Collaborate with security teams to support audits and compliance checks. Respond to and document Tier 1 and Tier 2 security incidents. Maintain up‑to‑date network diagrams and documentation. Requirements Technical Skills : Networking: Cisco routing and switching (IOS configuration, EIGRP, OSPF, VLANs, STP) Security: Firewall administration (Cisco ASA, Palo Alto, Fortinet); VPN setup (IPSec, SSL); IDS / IPS; Network Access Control Tools: Network monitoring (SolarWinds, Nagios, Wireshark); Vulnerability scanning (Nessus); SIEM tools (Splunk, Graylog, ELK stack) Systems: Windows Server, Active Directory; Linux Administrative: ITIL / Ticketing systems (e.g., ServiceNow); Basic scripting (Python, Bash) Certifications: Cisco Certified Network Associate (CCNA) Optional: CompTIA Security+; Cisco Certified CyberOps Associate Technical Environment Cisco Catalyst and ISR series Cisco ASA or Firepower Windows Server, Active Directory Linux for monitoring / security tools Syslog servers, SIEM tools (Splunk, Graylog, or ELK stack) Attributes Strong analytical and troubleshooting skills Effective communicator with cross‑functional teams Process‑oriented with an eye for documentation Continual learner with a strong interest in cybersecurity #J-18808-Ljbffr

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