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Network Security Architect - Firewalls, DNS, Onpremise, Cloud
Job in
City of London, Central London, Greater London, England, UK
Listed on 2026-09-25
Listing for:
Tria
Full Time
position Listed on 2026-09-25
Job specializations:
-
IT/Tech
Cybersecurity, Network Security, Systems Engineer
Job Description & How to Apply Below
Network Security Architect
Location:
London (3 Days Onsite / 2 Days Remote)
Contract Length: 6+ Months
Rate: £750 per day
IR35 Status:
Inside IR35
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.
Required Skills & Experience
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 with in 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
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