Network Security Specialist

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 Required Experience • 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 Skills & Competencies • 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 Desirable Qualifications • Industry certifications such as PCNSE, NSE, CCNP Security, or CISSP • Experience in highly regulated or mission-critical environments • ITIL or project management certifications 3 day's on site each week required Network Security Specialist, Palo Alto, Fortinet, Zscaler McGregor Boyall is an equal opportunity employer and do not discriminate on any grounds.