Network Security Architect; IoT & Connected Systems

Network Security Architect - IoT & Connected Systems

Sheffield (Hybrid, 3 days per week)

We're supporting a large-scale organisation seeking a Network Security Architect to help secure a complex estate of connected technologies across multiple sites.

This role sits at the intersection of network security, physical security, and connected device management. You'll be responsible for understanding what is connected to the corporate network, identifying security risks, and helping shape a more secure architecture across a diverse technology landscape.

The environment includes traditional IT infrastructure alongside non-standard network-connected devices such as CCTV, ANPR (Automatic Number Plate Recognition), access control systems, unified communications platforms, and SIM-enabled technologies.

Key Responsibilities

• Assess and secure devices connected to corporate and adjacent networks
• Review and improve security controls across a multi-site environment
• Identify risks associated with IoT and operational technology assets
• Design and implement network segmentation strategies
• Work closely with infrastructure, networking, facilities, and security teams
• Establish governance and security standards for connected systems
• Support the development of a more resilient and secure network architecture

Required Experience

• Strong background in Network Security Architecture or Cyber Security Architecture
• Experience securing IoT, connected devices, or operational technology environments
• Previous involvement in network segmentation programmes
• Knowledge of physical security technologies such as CCTV, ANPR, access control, or building management systems
• Experience assessing risks associated with devices sitting on or adjacent to enterprise networks
• Strong stakeholder management and communication skills
• Cisco, Palo Alto, Fortinet or similar enterprise networking technologies
• Cisco ISE, Aruba Clear Pass, Forescout or NAC platforms
• Zero Trust architectures
• Operational Technology (OT) security frameworks
• Multi-site or geographically dispersed environments

Working Arrangement

• Sheffield
• 3 days onsite per week
• Collaborative security and architecture-focused environment

If you have experience securing complex networks that extend beyond traditional IT environments and have worked with IoT, physical security systems, or connected operational technologies, we'd be keen to speak with you.