At UBDS, we're helping some of the UK's largest public and private sector organisations transform how they adopt and scale Artificial Intelligence. We're looking for a Principal AI Architect to work with clients to define AI strategies, design enterprise AI platforms and operating models, and deliver practical AI solutions that create measurable business value. You'll combine strategic consulting with technical leadership, helping organisations navigate the rapidly evolving AI landscape and scale AI safely, effectively and responsibly. What You'll Do Partner with clients to define AI strategies, adoption roadmaps and investment priorities. Design enterprise AI platforms, operating models and governance frameworks. Lead workshops with business and technology stakeholders to shape AI transformation programmes. Advise clients on technologies including Microsoft 365 Copilot, Copilot Studio, Azure OpenAI, Claude and other enterprise AI platforms. Design secure, scalable architectures for AI agents, knowledge management and Generative AI solutions. Produce high-quality client deliverables including strategies, operating models, roadmaps and architectures. Provide architectural and delivery leadership across AI engagements. Support business development, proposition development and technology partnerships. Mentor consultants, architects and engineers within the AI practice. What You'll Bring Experience delivering enterprise AI, data or cloud transformation programmes in a consulting or client-facing environment. Strong understanding of Generative AI, LLMs, AI Agents and Retrieval Augmented Generation (RAG). Experience with Microsoft, AWS, Databricks or Anthropic AI technologies. Experience designing enterprise architectures, platforms and operating models. Strong knowledge of AI governance, security and responsible AI principles. Excellent stakeholder management, workshop facilitation and communication skills. Ability to balance strategic thinking with practical delivery. Eligibility to obtain and maintain UK government clearance ( SC ) Desirable Experience with Claude Enterprise, AWS Bedrock, LangChain, or Azure Foundry. Experience working in central government or highly regulated environments. Familiarity with platform engineering, DevSecOps and AI operating models.