Enterprise Architect jobs in United Kingdom

Job Title: Security Architect

Location: Leeds Area or Newcastle Area (Hybrid Working)

Salary: Up to £70,000 + 12% Pension + 15% Bonus + £3K Car Allowance

Employment Type: Permanent | Full-Time

Start Date: ASAP | Interviewing Now

Help shape the future of secure enterprise architecture.

Join a major UK Utilities organisation leading a £100M transformation of its digital and operational technology estate.

From ServiceNow implementation and back-office system upgrades to cloud integration and modernisation of on-premise data centres, this is a rare opportunity to architect security across one of the UK's most critical infrastructure environments.

As a Security Architect, you'll embed secure-by-design principles across IT and OT systems, working alongside Solution Architects and a dedicated Cybersecurity team. You'll guide technical decisions that ensure risk, compliance, and innovation are aligned from day one.

What You'll Do

• Define and deliver enterprise-wide security architecture across hybrid cloud, on-prem, and OT environments.
• Collaborate with technical and non-technical stakeholders to embed security into solutions from design through to delivery.
• Develop reusable security patterns, architecture principles, and frameworks.
• Drive security architecture across digital programmes such as ITSM (ServiceNow) and back-office modernisation.
• Conduct threat modelling, risk analysis, and define security requirements for systems including remote access (VPNs) and secure OT-to-IT data exchange.
• Ensure compliance with industry standards such as ISO27001, NIS Directive, and NCSC's Cyber Assessment Framework (CAF).
• Support long-term architectural planning, contributing to multi-year roadmaps and aligning solutions with regulatory and business strategy.

What You'll Bring

• 3+ years of experience as a Security Architect, ideally in enterprise or regulated environments.
• Deep understanding of IT/OT architecture, including air-gapped systems and the Purdue model.
• Experience supporting large-scale transformation programmes with cloud, infrastructure, and legacy system exposure.
• Familiarity with industry standards and secure system development life cycles.
• Strong stakeholder engagement skills, able to align security decisions with business goals.

Desirable

• Hands-on experience with ServiceNow or similar ITSM platforms.
• Familiarity with utilities, energy, or critical infrastructure sectors.
• Prior experience working with or in a Distribution Network Operator (DNO).
• OT security experience is highly beneficial, but we also welcome strong cloud/infrastructure candidates looking to grow in this space.

What You'll Get

• Base Salary: Up to £70,000
• 12% Company Pension + Annual Bonus (up to 15%)
• Car Allowance (~£3K)
• 25 Days Annual Leave + Bank Holidays
• Long-term career progression in a high-impact national infrastructure programme

Your Focus: Security Architecture.

You'll lead on design and governance, while working closely with a separate Cybersecurity team handling operational response and tooling.

Apply now to play a strategic role in securing one of the UK's most ambitious digital transformations.