Senior Network Security Engineer

Senior Network Security Engineer (Palo Alto, Cisco ASA & Cloud Security)

Join a fast-paced, technology-driven online gaming business where security, performance, and innovation are at the heart of everything we do. We're looking for an experienced Network Security Engineer to take ownership of our perimeter security environment, helping protect critical systems and customer-facing services while driving modern security initiatives.

What you'll do

• Administer, support, and optimise Palo Alto Networks (Panorama and standalone) and Cisco ASA firewalls across production environments.
• Design, review, and maintain firewall policies in line with least-privilege security principles.
• Perform firewall upgrades, patching, maintenance, and high-availability failover testing.
• Deploy and implement new firewall infrastructure where required.
• Monitor firewall health, performance, and security logs, troubleshooting connectivity and traffic-flow issues.
• Build, support, and troubleshoot site-to-site IPSec VPNs with vendors, partners, and cloud providers.
• Configure and manage NAT, policy-based routing, and remote-access VPN solutions including GlobalProtect and Cisco AnyConnect.
• Support and enhance cloud security through Palo Alto Prisma Access, Cloudflare WAF, and broader SASE and Zero Trust initiatives.
• Respond to security incidents, support audits and compliance activities, and maintain technical documentation and network diagrams.
• Act as an escalation point for complex issues and mentor junior engineers.

What you'll bring

Essential

• 7+ years' hands-on experience in Network Security, Firewall Engineering, or a related discipline.
• Strong practical experience with Palo Alto Networks firewalls and Cisco ASA firewalls.
• Proven experience supporting IPSec VPN tunnels, NAT technologies, and policy-based routing.
• Strong networking fundamentals including TCP/IP, subnetting, VLANs, and routing protocols such as BGP and OSPF.
• Experience working with Palo Alto Prisma Access or similar SASE platforms.
• Experience supporting Web Application Firewalls, including Cloudflare WAF and application-layer security controls.
• Strong troubleshooting and diagnostic skills, including packet capture analysis and log investigation.
• Excellent communication skills and the ability to work independently.

Desirable

• PCNSE certification.
• Cisco CCNP Security or CCIE Security certification.
• Experience with Panorama, Strata Cloud Manager, Cisco FMC, or Cisco FTD.
• Exposure to AWS, Azure, or GCP networking and cloud-native firewall technologies.
• Experience with automation and scripting tools such as Python, Ansible, Terraform, or APIs.
• Knowledge of Zero Trust architectures, SD-WAN technologies, and security frameworks such as NIST or ISO 27001.

Why join

• Work with modern security technologies in a highly available, enterprise-scale environment.
• Contribute to the evolution of SASE and Zero Trust security architecture.
• Join a business focused on technology, innovation, and continuous development.
• Be part of a team where you can learn, grow, and make a meaningful impact.

Apply

If you're an experienced Network Security Engineer with strong Palo Alto and Cisco firewall expertise, we'd love to hear from you.