IT Security Specialist (Firewall) at FNB South Africa

Role overview:

• We are seeking an experienced Firewall Security Specialist to join our Infrastructure and Cybersecurity team. The successful candidate will be responsible for the administration, maintenance, monitoring, and optimization of enterprise firewall and network security platforms, ensuring the confidentiality, integrity, and availability of critical banking systems and services.
• The role requires a strong understanding of network security technologies, change management processes, threat mitigation, and operational support within a large-scale enterprise environment.

Key Responsibilities:

• Administer and support enterprise firewall environments, including configuration, maintenance, and troubleshooting.
• Implement and manage security policies, access control lists (ACLs), NAT, VPNs, and security zones.
• Perform firewall software upgrades, patching, and vulnerability remediation.
• Monitor firewall performance, availability, and security events.
• Investigate and resolve firewall-related incidents, outages, and performance issues.
• Review and implement approved firewall rule requests in accordance with security standards.
• Conduct firewall health checks, capacity planning, and lifecycle management.
• Collaborate with Cyber Security, Network Engineering, Risk, and Application teams during project implementations.
• Participate in after-hours maintenance windows and change implementations.
• Ensure compliance with organizational security standards, audit requirements, and regulatory obligations.
• Maintain accurate operational documentation, network diagrams, and configuration records.

We can be a match if you have:

• Degree or Diploma in Information Technology, Network Engineering, Cyber Security, or related field.

Industry certifications such as:

• Cisco CCNA Security / CCNP Security
• Cisco Secure Firewall Certification
• ITIL Foundation (advantageous)
• 3–5+ years of hands-on firewall administration experience.
• Experience supporting enterprise security platforms within a large corporate environment.
• Experience implementing security change requests and managing major incidents.
• Strong understanding of network protocols and security architectures.

End Date: August 23, 2026