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Security Engineer

Matchtech
London
1 week ago
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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
Referrals increase your chances of interviewing at Matchtech by 2x
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