Network Security Architect - Firewalls, DNS, Onpremise, Cloud in City of London

Job DescriptionNetwork 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- 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- 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