Security Architect

Security Architect

Plymouth Full-Time 42000 - 78000 £ / year (est.) No home office possible
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Harvey Nash

At a Glance

  • Tasks: Lead the design of security architecture for critical infrastructure projects.
  • Company: Join a major UK Utilities organisation transforming its digital landscape.
  • Benefits: Enjoy hybrid working, a competitive salary, and generous pension and bonus schemes.
  • Why this job: Be part of a high-impact team shaping secure enterprise architecture in a vital sector.
  • Qualifications: 3+ years as a Security Architect with experience in IT/OT environments.
  • Other info: Opportunity for long-term career growth in a transformative national programme.

The predicted salary is between 42000 - 78000 £ per year.

Location: Leeds Area or Newcastle Area (Hybrid Working)

Salary: Up to £75,000 + 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.

Harvey Nash

Contact Detail:

Harvey Nash Recruiting Team

StudySmarter Expert Advice 🤫

We think this is how you could land Security Architect

✨Tip Number 1

Familiarise yourself with the specific security frameworks and standards mentioned in the job description, such as ISO27001 and the NCSC's Cyber Assessment Framework. This knowledge will not only help you understand the role better but also demonstrate your commitment to compliance during discussions.

✨Tip Number 2

Network with professionals in the utilities and critical infrastructure sectors. Engaging with industry peers can provide insights into current challenges and trends, which you can reference in conversations or interviews to show your proactive approach and understanding of the field.

✨Tip Number 3

Prepare to discuss your experience with hybrid cloud environments and on-premise systems. Be ready to share specific examples of how you've successfully integrated security measures in these settings, as this will highlight your practical expertise and problem-solving skills.

✨Tip Number 4

Showcase your stakeholder engagement skills by preparing scenarios where you've aligned security decisions with business goals. This will illustrate your ability to communicate effectively with both technical and non-technical stakeholders, a key aspect of the role.

We think you need these skills to ace Security Architect

Security Architecture
Risk Analysis
Threat Modelling
Compliance with ISO27001
NIS Directive Knowledge
NCSC Cyber Assessment Framework Familiarity
IT/OT Integration
Cloud Security
Stakeholder Engagement
ServiceNow or ITSM Platforms Experience
Architecture Principles Development
Secure System Development Life Cycle Knowledge
Problem-Solving Skills
Collaboration Skills
Adaptability to Emerging Technologies

Some tips for your application 🫡

Tailor Your CV: Make sure your CV highlights relevant experience as a Security Architect. Focus on your understanding of IT/OT architecture, cloud transformation, and any hands-on experience with ServiceNow or similar platforms.

Craft a Compelling Cover Letter: In your cover letter, express your passion for security architecture and how your skills align with the company's goals. Mention specific projects or experiences that demonstrate your ability to embed secure-by-design principles.

Showcase Stakeholder Engagement Skills: Provide examples in your application of how you've successfully collaborated with both technical and non-technical stakeholders. This is crucial for the role, so highlight your communication skills and ability to align security decisions with business objectives.

Highlight Compliance Knowledge: Mention your familiarity with industry standards such as ISO27001 and the NIS Directive. This will show that you understand the regulatory landscape and can ensure compliance within the organisation's security architecture.

How to prepare for a job interview at Harvey Nash

✨Understand the Role

Make sure you have a solid grasp of what a Security Architect does, especially in the context of IT and OT environments. Familiarise yourself with the specific responsibilities mentioned in the job description, such as threat modelling and compliance with industry standards like ISO27001.

✨Showcase Your Experience

Prepare to discuss your previous experience as a Security Architect, particularly in enterprise or regulated environments. Highlight any large-scale transformation programmes you've supported, especially those involving cloud and infrastructure.

✨Engage with Stakeholders

Demonstrate your strong stakeholder engagement skills by preparing examples of how you've collaborated with both technical and non-technical teams. Be ready to explain how you align security decisions with business goals.

✨Ask Insightful Questions

Prepare thoughtful questions about the company's current security challenges and their approach to embedding secure-by-design principles. This shows your genuine interest in the role and helps you assess if the company is the right fit for you.

Security Architect
Harvey Nash
Location: Plymouth
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