David Samuel Yang Xu

Data Scientist & AI Architect | WSCUC Accredited Candidate Specialized in Privacy-First RAG Architectures and AI Orchestration. Trilingual (ES/EN/DE) with a track record of delivering measurable ROI—including an 18% reduction in overstock and 12% lift in campaign conversions through custom ML engines. I bridge the gap between complex Python/SQL pipelines and conversational AI insights that drive strategic decisions.