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# Network Security Architect - Firewalls, DNS, Onpremise, Cloud

- **Company:** TRIA
- **Location:** London, UK (Remote available)
- **Salary:** £182,000.0 - £195,000.0
- **Contract:** Temporary contract
- **Skills:** Amazon Web Services, Microsoft Azure, Cloud Computing, Cloud Computing Security, Computer Networks, DDoS Mitigation, Software Design Documents, Domain Name System (DNS), Intrusion Detection Systems, Network Security, Network Architecture, Routing, Network Segmentation, Remote Access Technology, Zero Trust Network Access, Google Cloud, Network Access Control, Load Balancing, Cloud Platform System, Firewalls (Computer Science), Fortinet, Firepower, Cisco
- **Published:** September 27, 2026
- **Apply:** https://find.jobs/jobs-near-me/apply/ats-redirect/?id=2987568055-2

## About the Role

* Proven experience as a Network Security Architect within large-scale enterprise environments.
 * Strong expertise in:

 * DNS architecture and security
 * Next-generation firewalls (Palo Alto, Check Point, Fortinet, Cisco Firepower or similar)
 * Network segmentation and micro-segmentation
 * Secure remote access and VPN technologies
 * Load balancing and traffic management
 * DDoS protection and network threat mitigation

Experience designing and securing both:

 * On-premise network infrastructure
 * Public cloud environments (Azure, AWS, or Google Cloud)

Strong understanding of:

 * Zero Trust Architecture
 * Network Access Control (NAC)
 * IDS/IPS technologies
 * Routing and switching protocols
 * Security frameworks and regulatory standards

Experience producing High-Level and Low-Level Design documentation (HLDs/LLDs).

Excellent stakeholder management and communication skills.

Desirable Skills

 * Experience within highly regulated environments.
 * Knowledge of cloud-native security services.
 * Exposure to Software Defined Networking (SDN).
 * Relevant certifications such as:

 * CISSP
 * CCNP Security / CCIE Security
 * Palo Alto PCNSE
 * Azure Security Engineer Associate
 * AWS Security Specialty

If you are an experienced Network Security Architect with strong expertise across DNS, firewall technologies, cloud security, and enterprise network architecture, we'd love to hear from you.

## Description

We are seeking an experienced Network Security Architect to join a high-profile organisation based in London on an initial 6-month contract. This is an exciting opportunity to play a key role in designing, implementing, and enhancing secure network infrastructure across both on-premise and cloud environments.

You will be responsible for defining network security architecture, driving best practice, and ensuring the resilience, scalability, and security of critical enterprise systems.


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