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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Lead Security Architect - **Company:** Addition Solutions Ltd - **Location:** Farnborough, UK - **Experience:** Expert - **Contract:** Permanent contract - **Skills:** Cyber Security, Javaserver Pages, Mailing List, Mod Security, Devsecops - **Published:** August 26, 2026 - **Apply:** https://www.collegerecruiter.com/job/2815178743-lead-security-architect ## About the Role Security Clearance: Must have valid clearance to SC level or higher, * Strong background in security architecture within defence or highly regulated environments * Hands-on risk management experience using frameworks such as NIST 800-53 * Proven ability to design and select security controls across networks, endpoints, identity, cryptography and data * Experience delivering secure-by-design solutions across on-prem and cloud platforms * Solid understanding of MOD security standards (e.g. JSP 604 / 453) and assurance artefacts * Excellent written skills for producing high-quality security and design documentation * Eligibility for UK government security clearance (or currently holding clearance) What's in It for You: * Work on genuinely meaningful programmes that support national security outcomes * Exposure to cutting-edge technologies in highly secure, complex environments * A culture built around agility, collaboration, quality and innovation * Opportunities to influence strategy, not just delivery * Flexible working and a people-first approach to career development * A chance to work alongside experienced technical and operational leaders ## Description Lead Security Architect Addition Farnborough, England, United Kingdom Location: Farnborough based (Hybrid / flexible working depending on project) Industry: Defence & National Security / Secure Technology Security Clearance: Must have valid clearance to SC level or higher What You'll Be Doing: * Leading security architecture across complex defence and security programmes * Owning risk management activities using recognised frameworks and methodologies * Designing proportionate security architectures aligned to system criticality * Setting the strategic direction for security across multiple projects * Working closely with software, infrastructure, DevSecOps and cyber teams to embed security by design * Producing assurance evidence to meet MOD and regulatory requirements * Developing options and mitigations to address technical and architectural vulnerabilities * Collaborating with wider IT architects and subject matter experts to deliver joined-up solutions * Engaging with assurance and accreditation stakeholders throughout the system lifecycle Main Skills Needed: * Strong background in security architecture within defence or highly regulated environments * Hands-on risk management experience using frameworks such as NIST 800-53 * Proven ability to design and select security controls across networks, endpoints, identity, cryptography and data * Experience delivering secure-by-design solutions across on-prem and cloud platforms * Solid understanding of MOD security standards (e.g. JSP 604 / 453) and assurance artefacts * Excellent written skills for producing high-quality security and design documentation * Eligibility for UK government security clearance (or currently holding clearance) What's in It for You: * Work on genuinely meaningful programmes that support national security outcomes * Exposure to cutting-edge technologies in highly secure, complex environments * A culture built around agility, collaboration, quality and innovation * Opportunities to influence strategy, not just delivery * Flexible working and a people-first approach to career development * A chance to work alongside experienced technical and operational leaders Call to Action: Big plans. Big impact. Ready to be part of it? We are an equal opportunity employer and value diversity at our company. We do not discriminate on the basis of race, religion, colour, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. By applying you are confirming you are happy to be added to the Addition Solutions mailing list regarding future suitable positions. 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