Network Security Specialist

Computappoint

• City of London
• 3 days per week onsite
• Salary up to £91,000 per annum

Network Security Specialist | Permanent | Hybrid
Employment Type: Permanent
Hybrid: 3-day onsite a week (Moorgate Station)
Salary: Up to base £91,000 + Bonus

Job Summary:
Our client, a leading global investment secto, is seeking a Network Security Specialist to join their Connectivity Engineering Team. This is a hands-on technical role focused on designing, implementing and governing network security controls across a high-performance, mission-critical enterprise environment.

you’ll serve as a technical lead across Fortinet, Palo Alto Networks and Zscaler, driving Zero Trust and micro-segmentation adoption across on-premises, cloud and containerised environments. This is an excellent opportunity for a security-focused network engineer who thrives on translating policy into enforceable technical controls and embedding security by design across a complex, regulated organisation.

Key Responsibilities:

• Design, implement and maintain enterprise network security controls including Firewalls, proxies and secure access services (Palo Alto Networks, Fortinet, Zscaler)
• Design and evolve Zero Trust network architectures, including identity-aware access and micro-segmentation strategies for traditional and containerised workloads
• Help shape the network security roadmap; produce high- and low-level designs and maintain security standards, patterns and policy definitions
• Partner with Information Security to translate policy into enforceable technical controls; support audits, risk assessments and regulatory obligations
• Provide 3rd-line escalation and subject-matter expertise across LAN, WAN, campus and data centre network security incidents
• Mentor engineers, set best practice and provide technical guidance to project teams and senior stakeholders across the Connectivity Engineering Team

Qualifications and Requirements:

• Minimum 5 years experience in regulated, mission-critical environments (financial services or critical infrastructure preferred)
• Deep hands-on expertise across Palo Alto Networks (PAN-OS, Panorama), Fortinet (FortiGate, FortiManager, FortiAnalyzer) and Zscaler (ZIA, ZPA, Zero Trust Exchange)
• Strong experience designing and implementing network segmentation, micro-segmentation and Zero Trust-aligned controls
• Experience securing hybrid environments spanning on-premises, cloud (Azure/AWS/GCP) and containerised platforms (Kubernetes/OpenShift)
• Relevant certifications expected: PCNSE, NSE, CCNP Security or CISSP; ITIL certification is an advantage

Desirable Skills:

• Automation/IaC (Terraform, Ansible), BGP/OSPF/VRF/VxLAN, Cisco ISE/NAC, packet capture and network monitoring tools, ITILv3 processes

To be considered, please ensure you complete your application on the Computappoint website. Services offered by Computappoint Limited are those of an Employment Business and/or Employment Agency in relation to this vacancy.