AI-Powered Customer Service Platform — UK FinTech

Architecture: FastAPI backend, RAG (Retrieval-Augmented Generation) with Claude 3.5 Sonnet API, Pinecone vector database for knowledge base, Next.js chat interface, PostgreSQL for conversation logging, AWS eu-west-2. FCA Consumer Duty Compliance: AI responses filtered through a compliance layer that detects: regulated advice patterns (flagged for human review), vulnerable customer signals (triggered to human agent immediately), and Consumer Duty outcome monitoring (satisfaction tracked post-resolution). No AI response delivered as regulated financial advice without human review. UK GDPR Article 22: Automated decision-making disclosure in the chat interface. Human escalation pathway available on every interaction. ICO AI guidance (2023) review completed before launch. DPIA for AI processing of financial query data. Gradual Rollout: Feature flags: 10% of queries → 30% → 60% → 80% (20% always human). Parallel monitoring for 6 weeks before full rollout.