Security Engineer
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Recruitment Business Partner at Matchtech | Recruiting across Engineering Technology Skillsets in the UK Defence market
Security Engineer – Bristol (Hybrid)
Security Clearance: SC (Eligible)
Are you passionate about securing the future of critical technology? Do you have deep working knowledge of NIST standards and Defence Standards like DefStan 05-138 Issue 3 and DefStan 05-139 Issue 1?
We’re hiring a Product Security Engineer to help shape the security architecture of next-generation defence and technology systems. This is a high-impact role where your expertise in threat modelling, risk assessment, and secure-by-design engineering will drive innovation and resilience from day one.
What You’ll Be Doing:
- Leading product risk assessments and driving security improvements across the full development lifecycle.
- Conducting threat modelling and collaborating closely with engineers to embed security at every layer.
- Applying your hands-on knowledge of DefStan 05-138 and 05-139 to ensure products meet UK defence requirements.
- Leveraging the NIST 800 series (an absolute must) to establish best-in-class security frameworks.
- Performing code reviews, penetration testing, and guiding remediation efforts.
- Producing clear, robust documentation such as RMADS and Security Assurance artefacts.
What You Bring:
- Proven experience with NIST 800-30, 800-37, 800-53 and related frameworks. (Essential)
- Practical, working knowledge of Defence Standards, especially DefStan 05-138 and DefStan 05-139.
- Familiarity with threat modelling tools and methodologies.
- Solid understanding of ISO 27001/2, ISO 31000, and JSPs.
- Strong communication skills with the ability to simplify complex risks for non-technical stakeholders.
- A passion for secure design, ethical problem solving, and delivering high-assurance solutions.
You’ll Thrive In This Role If You:
- Enjoy working at the intersection of engineering, cyber, and defence.
- Are detail-oriented and solutions-driven with a calm, analytical approach to security challenges.
- Can manage multiple projects and priorities in a dynamic, agile environment.
Seniority level
Seniority level
Mid-Senior level
Employment type
Employment type
Full-time
Job function
Industries
Defense and Space Manufacturing, Computer and Network Security, and Information Services
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