Senior Security Architect: Enterprise IT/OT & Cloud

National Highways; United Kingdom; Hybrid; GBP 70,000 - 90,000; Full time

Job summary

National Highways is recruiting a Senior Technical Architect within the Enterprise Security Architecture team to embed security across IT, OT and business services. You will provide expert guidance on security architecture, risk, and governance, shaping roadmaps and secure design across programmes and operations.

This hybrid role requires two days per week in the office, UK-wide locations, and may involve travel. Candidates should be eligible for UK residency and SC clearance where required.

Qualifications

• Proven experience in security architecture, with the ability to translate security strategy and risk into practical architectural solutions that support organisational objectives and digital transformation.
• Strong knowledge of security, regulatory and industry frameworks (e.g. ISO 27001, NIST, GDPR and IEC 62443) across IT and OT environments.
• Demonstrable experience designing and evaluating secure Cloud and IT architectures, including IAM, encryption and network segmentation.
• Advanced experience in security risk assessment, threat modelling and vulnerability analysis across complex IT and OT environments.
• Practical experience applying Secure-by-Design principles, overseeing security testing, advising on compliance and providing technical guidance during security incidents.

Responsibilities

• Provide strategic security architecture advice across IT, OT and business services, identifying security gaps, emerging risks and opportunities to influence technology roadmaps.
• Contributing to secure architecture design and assurance, including high-level and detailed designs, risk assessments and application of security controls and standards.
• Provide expert technical guidance across Cloud and OT environments, supporting configuration management, patching, access management, disaster recovery and incident response.
• Drive continuous improvement of enterprise security frameworks, policies and practices while maintaining documentation and compliance records.
• Support secure lifecycle management of services and systems, including transition and decommissioning, ensuring security requirements and audits are maintained.

Skills

Security architecture

Cloud security

Identity and access management

Encryption

Network segmentation

Security risk assessment

Threat modelling

Secure-by-Design

Security incident response

Job description

National Highways is recruiting a Senior Technical Architect within the Enterprise Security Architecture team to embed security across IT, OT and business services. You will provide expert guidance on security architecture, risk, and governance, shaping roadmaps and secure design across programmes and operations.

This hybrid role requires two days per week in the office, UK-wide locations, and may involve travel. Candidates should be eligible for UK residency and SC clearance where required.