Senior Firewall Engineer

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Firewall Administration and Support
Manage, support, and maintain Palo Alto Networks (Panorama and standalone) and Cisco ASA firewalls in production environments
Create, review, and optimize security policies, following least-privilege principles and cleaning up redundant or overly permissive rules
Perform firmware and OS upgrades, patching, and high-availability (HA) failover testing
Implement new firewalls where required.
Monitor firewall health, performance, and logs, and troubleshoot connectivity and traffic-flow issues
Manage change requests, including risk assessment, implementation, and rollback planning
VPN, NAT, and Routing
Build, troubleshoot, and maintain site-to-site IPSec VPN tunnels (IKEv1/IKEv2) with partners, vendors, and cloud providers
Configure and manage NAT (static, dynamic, PAT, and policy-based NAT) across platforms
Implement and support policy-based routing and related traffic-steering functions
Support remote access VPN, including GlobalProtect and Cisco AnyConnect
SASE and Cloud Security
Support and administer Palo Alto Prisma Access, including remote networks, mobile users, and policy alignment with on-prem firewalls
Contribute to the adoption and evolution of SASE and zero-trust architectures
Web Application Firewall (WAF)
Manage and tune Cloudflare WAF rules, rate limiting, bot management, and custom rulesets
Configure and support WAF and threat-prevention features on the firewalls (e.g., URL filtering, IPS, and application-layer controls)
Investigate false positives and security events, and work with application teams on remediation
Security, Documentation, and Collaboration
Respond to security incidents involving firewall or perimeter controls
Support audits and compliance requirements with evidence, rule reviews, and configuration reports
Maintain accurate network diagrams, runbooks, and standards documentation
Mentor junior engineers and act as an escalation point for complex issues
Required Qualifications
7+ years of hands-on experience in network security or firewall engineering
Strong, proven experience administering Palo Alto Networks firewalls and Cisco ASA firewalls
Solid experience with IPSec VPN tunnels, NAT, and policy-based routing
Strong understanding of networking fundamentals: TCP/IP, routing (static, BGP, OSPF), VLANs, and subnetting
Working knowledge of SASE solutions, particularly Palo Alto Prisma Access
Experience supporting a WAF, including Cloudflare, and application-layer security on firewalls
Strong troubleshooting skills, including packet captures and log analysis
Clear written and verbal communication, and the ability to work independently
Preferred Qualifications
A relevant certification, such as:
Palo Alto Networks Certified Network Security Engineer (PCNSE)
Cisco CCNP Security or CCIE Security
Experience with Panorama, Strata Cloud Manager, or Cisco FMC/FTD
Familiarity with cloud networking (AWS, Azure, or GCP) and cloud-native firewalls
Experience with automation or scripting (Python, Ansible, Terraform, or APIs) for firewall management
Knowledge of zero-trust principles, SD-WAN, and frameworks such as NIST or ISO 27001
*Please note we will apply relevance to our Talent Management and Talent Development Programme as part of our recruitment process.
*Shortlisted candidates may need to complete an assessment.
This position requires trust and honesty it has access to customers financial details - therefore a credit and criminal record check will be conducted. The qualifications identified herein are an inherent job requirement; therefore, a qualification verification check will be done. By applying for this role, and supplying the necessary details, you hereby grant us permission to apply for these checks. This will be done in a confidential manner, and solely for the purposes of verification.
Should you not hear from us within 2 weeks, please deem your application as unsuccessful.
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