Enterprise Firewall Security Engineer

firstrand; Randburg; On-site; ZAR 520,000 - 860,000; Full time

Benefits offered by this job

Networking opportunities

Challenging work

Innovation opportunities

Job summary

FNB is seeking an experienced Firewall Security Specialist to join our Infrastructure and Cybersecurity team. You will administer, monitor, and optimize enterprise firewall platforms to safeguard critical banking systems and data.

Ideal candidates bring 3–5+ years of hands-on firewall administration, strong knowledge of Cisco ASA/FTD and VPN technologies, and experience with change management in a large enterprise environment.

Qualifications

• 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.

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.

Skills

Firewall administration

Network security

Threat mitigation

Change management

Documentation

Education

Degree or Diploma in Information Technology / Cyber Security

Tools

Cisco ASA

Cisco Secure Firewall Threat Defense (FTD)

Cisco FMC (Firepower Management Center)

VPN Technologies (IPSec, SSL VPN)

NAT & ACLs

Job description

FNB is seeking an experienced Firewall Security Specialist to join our Infrastructure and Cybersecurity team. You will administer, monitor, and optimize enterprise firewall platforms to safeguard critical banking systems and data.

Ideal candidates bring 3–5+ years of hands-on firewall administration, strong knowledge of Cisco ASA/FTD and VPN technologies, and experience with change management in a large enterprise environment.