IT Security Specialist (Firewall)

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

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.

Qualifications

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

Technical Skills (Advantageous)

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

Benefits

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

#Post #FNB #LI-NN2

Are you interested to take the step? We look forward to engaging with you further.

Important Closing Date Note

Take note that applications will not be accepted on the below date and onwards, kindly submit applications ahead of the closing date indicated below.

23/08/26

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.

FirstRand provides a comprehensive range of financial services in South Africa and certain markets in broader Africa. The group also offers certain niche products and services in the UK and India. Listed on the Johannesburg Stock Exchange (JSE) and the Namibian Stock Exchange (NSX), FirstRand Limited is the largest financial institution by market capitalisation in Africa. The group follows a multi-branding approach. Its portfolio of financial services businesses includes FNB, RMB, WesBank, Ashburton Investments, Aldermore, MotoNovo and DirectAxis. Many are leaders in their respective segments and markets, offering transactional, lending, investment and insurance products and services The FirstRand Corporate Centre houses many of the critical functions required by a large and complex financial services group. The group's track record of delivering superior returns to shareholders has been achieved through a combination of organic growth, acquisitions, innovation and the creation of completely new businesses. The group's purpose of delivering Shared Prosperity provides many opportunities for employees to innovate to address social and environmental challenges in our markets. All of our businesses have successful Volunteering programmes which also allow employees to adopt and support causes close to their hearts.