Network Security Specialist, Palo Alto, Fortinet, Zscaler

I am seeking a Network Security Specialist to join a high-performing connectivity engineering team within a complex, enterprise-scale environment.
This role will play a key part in designing, implementing, and governing network security controls across a modern hybrid infrastructure. You will help drive the adoption of Zero Trust architecture and micro-segmentation, ensuring security is Embedded into all layers of connectivity.

Key Responsibilities

• Design, implement and maintain enterprise network security controls, including Firewalls, proxies, and secure access platforms
• Act as a subject matter expert across leading security technologies (Palo Alto, Fortinet, Zscaler)
• Define and enforce security policies across data centre, campus, cloud, and hybrid environments
• Lead complex troubleshooting across network security issues, balancing security, performance, and availability
• Contribute to the development of the network security roadmap aligned with wider technology strategy
• Design and implement Zero Trust architectures, including identity-based access controls
• Develop and execute micro-segmentation strategies for both traditional and containerised workloads
• Support cloud, Kubernetes/OpenShift, and automation initiatives with secure-by-design principles
• Maintain network security standards, policies and design patterns
• Support audits, risk assessments, and regulatory requirements
• Collaborate with infrastructure, platform, application, and security teams to embed best practices
• Provide technical leadership and mentoring to engineering teams
• Act as a 3rd line escalation point for complex network security issues

• Proven experience in enterprise network security engineering within large, complex environments
• Strong hands-on expertise with:
• Palo Alto Networks (PAN-OS, Panorama)
• Fortinet (FortiGate, FortiManager, FortiAnalyzer)
• Zscaler (ZIA, ZPA)
• Experience designing and implementing:
• Network segmentation and micro-segmentation
• Zero Trust architectures
• Firewall and Proxy security policies
• Strong knowledge of hybrid environments (on-prem, cloud, containerised platforms)
• Solid understanding of core networking technologies:
• TCP/IP, BGP, OSPF, VLANs, VPN, NAT, DNS
• Experience with network monitoring, analytics, and packet capture tools
• Exposure to security within Kubernetes/OpenShift environments
• Understanding of automation/infrastructure-as-code approaches
• Experience operating within ITIL-based environments

• Ability to translate high-level security policy into scalable technical solutions
• Strong analytical and problem-solving skills
• Excellent communication and stakeholder engagement ability
• Hands-on, detail-oriented approach with a strategic mindset

• Industry certifications such as PCNSE, NSE, CCNP Security, or CISSP
• Experience in highly regulated or mission-critical environments
• ITIL or project management certifications

McGregor Boyall is an equal opportunity employer and do not discriminate on any grounds.