Skip to main content
Posted 12 August, 2026

Security Architect - SC Cleared - Inside IR35

Sanderson Government and Defence
Beckenham, ENG, GB Full Time

Job Description

Security Architect - SC Cleared - Inside IR35Location: LondonType: Home based with occasional travel to London or CroydonRate : £600 - £700Status : InsideLength: Initial 6 monthsRole OverviewThe Security Architect will validate and complete the security architecture for the programme, ensuring designs are Secure by Design, supported by discovery-phase outputs, and taken through to verified high-level and low-level designs ahead of beta.Key ResponsibilitiesVerify and develop security architectural artefacts, including high-level and low-level designs, building on discovery-phase outputs, using programme architecture tooling, aligning to governance processes and developing Secure by Design (SbD) artefactsIdentify and close gaps in discovery outputs required to complete security designsEngage directly with programme stakeholders and the wider community to gather information, run options analysis, workshop solutions and analyse documentationEngage with the PPPT and wider Home Office security community to ensure solutions are compliant and informed by wider Home Office knowledge and experienceDevelop security architectural artefacts compliant with programme and wider organisational standards, including Secure by Design processesValidate security options and recommendations through programme peer engagements, design forums and technical design authoritiesWork hands-on with alpha-phase development and DevOps resources to explain agreed architectures and incorporate feedback as architectures evolveSupport requirements development for future procurements and development activity, informed by discovery and alpha-phase hypothesis testingRequired Skills & ExperienceSecurity architecture delivery across large, complex IT landscapes in a regulated, critical environmentBroad experience across security architecture styles (e.g. cloud, distributed, monolithic)A pragmatic approach to picking up architecture work started by previous resources, quickly assessing what is needed and driving to conclusionsExcellent stakeholder management, including influencing senior stakeholders and negotiating contentious architectural issues to reach consensusExperience managing and recording key design decisionsGood understanding of programme reference architecture and governance processesAble to manage people, navigate conflict, problem-solve, distil key discussion points, organise work and communicate effectivelyReasonable Adjustments:Respect and equality are core values to us. We are proud of the diverse and inclusive community we have built, and we welcome applications from people of all backgrounds and perspectives. Our success is driven by our people, united by the spirit of partnership to deliver the best resourcing solutions for our clients.If you need any help or adjustments during the recruitment process for any reason , please let us know when you apply or talk to the recruiters directly so we can support you.TPBN1_UKTJ