Network Security Architect - Firewalls, DNS, Onpremise, Cloud

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 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
Only candidates based in UK and eligible to work in UK are allowed