Our client located in Johannesburg is seeking an experienced Security and Firewall Administrator to join their team. The ideal candidate will be responsible for maintaining and optimising our network security infrastructure, with a focus on firewall management and security monitoring. Key Responsibilities : Configure, maintain and troubleshoot enterprise firewalls (Fortigate/Palo Alto) Implement and manage security policies, rules, and access controls Monitor network traffic and security alerts for potential threats Conduct regular security audits and vulnerability assessments Document network security configurations and changes Provide after-hours support on a rotational basis when required Collaborate with IT teams on security implementations and incident response Maintain security compliance standards and best practices Required Qualifications : 3-5 years experience in network security administration Professional certification in firewall administration (PCNSA, NSE4, or equivalent) CompTIA Network certification Ethical Hacking certification (CEH or CompTIA PenTest) Strong experience with Fortigate or Palo Alto firewall platforms Solid understanding of networking protocols and security concepts Experience with VPN configurations and management Desired Skills: Knowledge of SIEM tools and log analysis Experience with IDS/IPS systems Understanding of compliance frameworks (ISO 27001, PCI DSS) Knowledge of Python or other scripting languages Experience with cloud security (AWS/Azure) Strong analytical and problem-solving abilities Excellent communication skills in English