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Security architect (defence)

London
Sanderson Government & Defence
Security architect
Posted: 13 August
Offer description

Are you an experienced Cyber Engineer ready to take the next step in your career - or feeling stuck on a stagnant project?


If you're looking to join an exciting, fast-growing consultancy where your work is varied, your voice is heard, and your contribution truly matters - keep reading.


Location: UK-wide (Hybrid working)

Employment Type: Full-time, Mid-Senior level

Clearance Required: Active SC Clearance (must currently hold)


About the Opportunity


Sanderson is working in partnership with a fast-scaling cyber security consultancy that’s making a real impact across both the public and private sectors. Known for their deep technical expertise and delivery excellence, they support some of the UK’s most complex and security-sensitive programmes.


Following a series of major public sector project wins, this organisation is on a steep growth trajectory, expanding their consulting and engineering teams significantly over the next 12 months. As a Security Architect, you’ll play a leading role in shaping secure systems architecture for national programmes - bringing both technical depth and strategic vision.


This is a rare opportunity to join a dynamic, growing consultancy where your voice is heard, your expertise is valued, and your work directly influences real-world security outcomes.


Key Responsibilities

* Design secure architectures across enterprise, cloud, and hybrid platforms
* Provide expert guidance on risk, security controls, and assurance in high-threat environments
* Develop documentation including high-level designs, risk assessments, and assurance frameworks
* Support technical teams through delivery, embedding security into engineering and delivery lifecycles
* Influence strategic security posture across large-scale transformation programmes


Essential Skills & Experience

* Active SC Clearance is essential – candidates without current clearance cannot be considered
* Defence experience needed - at least 2 years recent defence experience working with MOD or Civil Service
* Strong knowledge of UK government security standards (e.g. NCSC guidance, ISO27001, JSP 440)
* Proven experience designing and implementing secure systems in enterprise or government settings
* Familiarity with cloud platforms (AWS/Azure), identity management, secure networking, encryption, and SIEM
* Strong communication and stakeholder engagement skills, able to advise both technical and business teams


Desirable Experience

* Background in central government, defence, or critical national infrastructure
* Knowledge of architectural frameworks such as TOGAF or SABSA
* Certifications such as CISSP, CISM, CCSP, or equivalent
* Understanding of Zero Trust, secure DevOps practices, or automation in security engineering


Why Join This Consultancy?

* Work on high-impact, nationally significant programmes
* Join a consultancy that’s scaling fast, with real opportunities for progression and leadership
* Engage in a wide variety of projects across both public and private sectors
* Benefit from flexible, hybrid working (UK-wide with occasional travel)
* Be part of a collaborative, expert-led team that values innovation, autonomy, and integrity
* Competitive salary, benefits, and ongoing investment in your learning and development



Apply now via Sanderson to become a key player in a growing cyber consultancy working at the heart of the UK’s most secure programmes.


Sanderson works exclusively in partnership with this client; all applications are handled in strict confidence.

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