IT Security Specialist (Firewall)

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

Job Description

Hello Future IT Security Specialist (Firewall),

Welcome to FNB, the home of the #changeables. We design for the shapeshifters and deliver products and services that make us incredibly proud of people that make it happen.

As part of our talent team, you will be surrounded by unique talents, diverse minds, and an adaptable environment that lives up to the promise of staying curious. Now's the time to imagine your potential in a team where experts come together and ignite effective change.

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.

Technical Skills

Essential

• Cisco ASA
• Cisco Secure Firewall Threat Defense (FTD)
• Cisco FMC (Firepower Management Center)
• VPN Technologies (IPSec, SSL VPN)
• Routing and Switching Fundamentals
• TCP/IP Networking
• NAT, ACLs, Security Zones
• High Availability (HA) Configurations
• Firewall Upgrades and Migrations
• Change Management Processes

Advantageous

• Cisco ACI
• SIEM Platforms (Splunk, QRadar, Sentinel)
• Cloud Security (Azure, AWS)

You will have access to

• Opportunities to network and collaborate.
• Challenging Work.
• Opportunities to innovate.

Important Closing Date Note

24/08/26

All appointments will be made in line with FirstRand Group's Employment Equity plan. The Bank supports the recruitment and advancement of individuals with disabilities. In order for us to fulfill this purpose, candidates can disclose their disability information on a voluntary basis. The Bank will keep this information confidential unless we are required by law to disclose this information to other parties.

#Post #FNB #LI-NN2