Architected end-to-end Human-AI Interaction for AWS Bedrock Agentic RAG and multimodal platform services, increasing retrieval accuracy by 25% and reducing hallucinations by 15% in multi-million-dollar enterprise deployments. Designed trust-centered UX patterns that surfaced model reasoning, intent mapping, and system transparency to strengthen user agency in AI-driven workflows. Partnered with research and engineering leadership to accelerate delivery by 10%, identify critical model behavior gaps, and influence high-priority experimentation roadmaps.