Security Architect

Job Description

Job Title: Defence Security Architect

Location: Bristol Hybrid Working

Security Clearance: SC eligible (or willing to undergo clearance)

Are you passionate about embedding security into every stage of product development? We are looking for a proactive and skilled Security Architect to join a forward-thinking organisation committed to secure and resilient system design. This is a fantastic opportunity to influence and shape security strategies across cutting-edge products and technologies.

Role Overview

As a Security Architect, you will play a key role in designing, implementing, and overseeing security solutions to protect systems and products from emerging threats. You will work closely with development teams to apply secure-by-design principles, ensuring security is embedded throughout the product lifecycle.

Key Responsibilities

• Define and integrate security requirements into the product development lifecycle.
• Perform threat modelling, risk assessments, and implement appropriate mitigation strategies.
• Advise on solution architecture to minimise security risks and ensure compliance with security standards.
• Collaborate with product teams to ensure security best practices are adopted.
• Maintain up-to-date documentation, guidelines, and training materials.
• Support incident response activities related to security breaches.
• Communicate risk findings clearly to stakeholders including technical teams and senior management.
• Drive continuous improvement and knowledge sharing across teams.

What We’re Looking For

Technical Experience & Knowledge

• Experience with risk management frameworks and methodologies such as ISO/IEC 27001/2, ISO27005/31000, NIST 800-30, NIST 800-53.
• Strong understanding of security standards and frameworks including OWASP, Secure by Design principles, and MOD-specific guidelines (e.g., JSP, Def Stan 05-138/139).
• Familiarity with HMG security principles and assurance frameworks is advantageous.
• Comfortable using threat modelling tools and implementing mitigation strategies.
• Experience with NIST standards. (this is an absolute must)

Key Competencies

• Strong communicator with the ability to present complex information clearly and confidently.
• Proactive problem solver who approaches challenges with innovation and critical thinking.
• Highly organised with a methodical approach to planning and task management.
• Resilient under pressure, with a drive to deliver results and meet deadlines.
• A team player with a collaborative mindset and strong stakeholder engagement skills.

Why Join Us?

You’ll be part of a team where security is at the core of every decision. This role offers the opportunity to make a tangible impact across a diverse portfolio of products and systems, while working in a supportive and forward-thinking environment.

Interested?

We’d love to hear from you. Submit your CV and a short cover letter outlining your experience and motivation for applying.

Please note: All applicants must be eligible for SC security clearance.