Lead Technical Architect

Lead Technical Architect

Summer Browning | Greater London, ENG, GB

Posted 15 days ago

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Description

Lead Technical Architect -


Summer-Browning Associates is supporting our client in the Central Government who is seeking a Lead Technical Architect for an initial 6-month assignment, with the possibility of extension.


Location: London | Hybrid


The ideal candidate will bring extensive experience in enterprise cloud architecture, AI security, systems integration, and architectural governance, with the ability to translate complex technical requirements into end-to-end solutions. A strong understanding of UK government security standards and experience operating within highly secure environments.


The following skills and experience are required:


Enterprise Cloud Architecture



  • Extensive experience leading cloud architecture across GCP and/or AWS environments.

  • Expertise in secure Cloud Landing Zones, Identity and Access Management (IAM) hierarchies, and microservices architecture.

  • Proven ability to design secure, scalable solutions for complex enterprise environments.


AI Guardrails & Perimeter Defence



  • Hands-on experience designing deterministic AI safety controls and secure AI architectures.

  • Knowledge of human-in-the-loop approval mechanisms, VPC Service Controls, Workload Identity Federation (WIF), and Microsoft Entra ID.

  • Experience establishing privacy, data protection, and Personally Identifiable Information (PII) masking controls.


Strategic & Technical Architecture Leadership



  • Proven experience leading both strategic architecture and detailed technical design.

  • Ability to design modular components and services, ensuring seamless interoperability and delivery of end-to-end business outcomes.

  • Strong understanding of architectural patterns, design principles, and technical solution delivery.


Systems Integration & API Architecture



  • Experience designing modular, vendor-neutral software architectures and API layers.

  • Ability to integrate core enterprise platforms with central AI capabilities and workflow systems.

  • Strong understanding of interoperability, integration patterns, and technology-agnostic design.


Architectural Governance & Assurance



  • Experience navigating UK central government architectural governance and Technical Design Authority (approval processes.

  • Understanding of Data Protection Impact Assessments (DPIAs), cyber security assurance, and relevant NCSC standards.

  • Familiarity with Secure by Design, Cloud Security Principles, GDS guidance, and Government Functional Standards.


Desirable Experience



  • Previous experience working within central government, defence, or other highly secure environments.

  • Familiarity with UK government security frameworks and the challenges of delivering AI and cloud solutions in high-threat settings.


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