Enterprise Firewall Security Engineer

RMB; Randburg; On-site; ZAR 600,000 - 900,000; Full time

Benefits offered by this job

Opportunities to network and collab or

Challenging Work.

Opportunities to innovate.

Job summary

FNB is seeking an experienced Firewall Security Specialist to join our Infrastructure and Cybersecurity team. You will administer and optimize enterprise firewall environments to protect critical banking services and data.

The role requires hands-on firewall management, change control, threat mitigation, and collaboration with Cyber Security, Network Engineering, Risk, and Application teams. Cisco expertise and relevant certifications are highly valued.

Qualifications

• Degree or Diploma in Information Technology, Network Engineering, Cyber Security, or related field.
• Industry certifications such as 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.

Responsibilities

• Administer and support enterprise firewall environments, including configuration, maintenance, and troubleshooting.
• Implement and manage security policies, 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.
• Maintain accurate operational documentation, network diagrams, and configuration records.
• 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.

Skills

Firewall administration

Security policy management

Incident response

Networking fundamentals

Education

Degree or Diploma in IT / Cyber Security

Tools

Cisco ASA

FTD

FMC

VPN

NAT/ACLs

HA

Job description

FNB is seeking an experienced Firewall Security Specialist to join our Infrastructure and Cybersecurity team. You will administer and optimize enterprise firewall environments to protect critical banking services and data.

The role requires hands-on firewall management, change control, threat mitigation, and collaboration with Cyber Security, Network Engineering, Risk, and Application teams. Cisco expertise and relevant certifications are highly valued.