Selected AI Systems
Enterprise Fraud Detection AI Platform
Built a production fraud-detection agent for regulated telecom and public-sector scenarios, combining deterministic rules, NLP, LLM reasoning, RAG, secure deployment, and standardized APIs at 15M calls per day.
Proof signal
Demonstrates production AI engineering under real security, latency, integration, scale, and adoption constraints—not a standalone model demo.
Enterprise ChatBI / NL2SQL System
Built a ChatBI system for logistics analytics that replaced an unreliable pure-LLM path with tiered routing, guided clarification, retrieval, validation, and ReAct-style tool orchestration.
Proof signal
Shows the ability to engineer reliable enterprise LLM applications by combining probabilistic reasoning with deterministic routing, tools, data context, and validation.
Xiaomi Credit Intelligence & Risk Platform
Built a credit-scoring platform from scratch for thin-file users, converting MIUI, IoT-device, and e-commerce behavior into 1,500 features, an XGBoost model, and API-based risk services.
Proof signal
Demonstrates end-to-end production ML engineering: feature systems, interpretable modeling, APIs, scale, partner integration, and measurable financial impact.
Meituan Logistics Early-Warning & Diagnosis System
Built a real-time early-warning and diagnosis system for logistics fulfillment, connecting operational signals to root-cause analysis and measurable improvement actions.
Proof signal
Shows how large-scale data systems become operational engineering tools that improve reliability, cost, and frontline decision quality.