Network Security jobs in United Kingdom

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We are seeking an experienced and strategic Network Security Architect to design secure, scalable, and resilient network architectures across the enterprise.

The ideal candidate will possess deep knowledge of :

• - Cybersecurity including Zero Trust Architecture
• - Cloud Security Architecture
• - Be capable of aligning security controls with business objectives and compliance requirements.

Key Responsibilities:

• Lead the design and implementation of secure network architectures for on-premises, cloud, and hybrid environments.
• Define network security standards, frameworks, and policies aligned with industry best practices (e.g., NIST, ISO 27001, CIS).
• Develop and maintain secure designs for firewalls, VPNs, intrusion prevention systems (IPS/IDS), network segmentation, and zero trust network access (ZTNA).
• Collaborate with IT, cloud, and cybersecurity teams to ensure secure integration across systems and applications.
• Lead architectural reviews and assurance of designs working with System Integrators & partner resources.
• Conduct threat modeling and risk assessments on network infrastructure and recommend mitigations.
• Support incident response teams during network-related security incidents and perform root cause analysis.
• Evaluate and recommend security tools and technologies, and stay informed on emerging threats and vulnerabilities.

Required Skills and Qualifications:

• Proven experience as a Network Security Architect or in a senior network security engineering role.
• Experience with Cisco LAN; WAN technologies
• Experience with Zscaler or equivalent to drive toward Zero Trust
• In-depth knowledge of network protocols, routing, switching, DNS, DHCP, and encryption standards.
• Strong hands-on experience with network security solutions such as firewalls (e.g., Palo Alto, Fortinet, Cisco ASA), NAC, IPS/IDS, and SD-WAN.
• Understanding of Zero Trust Architecture, microsegmentation, and secure cloud networking (e.g., Azure, AWS, GCP).
• Experience with security information and event management (SIEM), threat intelligence, and vulnerability management.
• Excellent communication and documentation skills, with the ability to influence and educate stakeholders.
• Relevant certifications strongly preferred (e.g., CISSP, CCNP Security, CCIE Security, GIAC, Azure/AWS security certs).