Senior Technical Architect – National Security Programme
📍 Milton Keynes (Hybrid – 60% onsite)
💰 £508.77/day PAYE or £652.82/day Umbrella
📅 6 Month Contract (Potential Extension)
🔒 SC Clearance Eligible Required
A leading government-focused organisation is seeking a Senior Technical Architect to support the delivery of critical national security capabilities. This is a high-impact role working at the intersection of architecture, engineering, and secure government operations.
The Role
You’ll play a key role in shaping and delivering secure technical solutions within a complex, high-assurance environment. Acting as a bridge between stakeholders and technical teams, you’ll ensure solutions are robust, compliant, and aligned with strategic objectives.
Key Responsibilities
* Lead technical engagement with stakeholders, translating business needs into scalable solutions
* Facilitate and run technical workshops with customers and delivery teams
* Produce and maintain high- and low-level technical designs
* Provide 4th line technical oversight and support for complex issues
* Conduct impact assessments across functional, capability, and security domains
* Review and govern technical changes, ensuring alignment with standards and best practices
* Contribute to architectural governance and support wider CTO function activities
* Evaluate emerging technologies and present options, including cost/benefit analysis
* Required Experience
* Strong background in technical architecture within secure or government environments
* Experience working with enterprise infrastructure and virtualised platforms
* Solid knowledge of:
* Microsoft and Linux operating systems
* VMware stack (vCloud Director, vSAN, NSX)
* Network technologies and secure architectures (e.g. SASE)
* High-grade encryption technologies
* Proven experience producing architectural documentation (HLDs, LLDs, options papers)
* Strong understanding of security frameworks (e.g. NCSC, NIST, CIS, Cyber Essentials)
* Experience managing and owning technical requirements
* Excellent stakeholder engagement and communication skills
Desirable
* Experience in matrix organisations
* Exposure to Infrastructure as Code, containerisation, and microservices
* Working Arrangements
* Hybrid model: minimum 60% onsite in Hanslope Park
* Standard working week: 37.5–48 hours
* Participation in an on-call rota (additional flat-rate payments apply)
Additional Information
* Candidates must be British nationals and eligible for SC clearance
* This role falls inside IR35
* Travel within Milton Keynes/London is expected within the day rate
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