Huynh Thi Hai Chau · AI Application Engineer
AI agents, RAG chatbots and LLM API integrations, measured by business outcomes. Based in Hanoi; open to Hanoi, Da Nang or Ho Chi Minh City.
CV (PDF) · GitHub · LinkedIn · haichauht04@gmail.com
- ViVi: AI agent for VinFast test-drive booking (LangGraph, FastAPI, PostgreSQL) · 57/57 regression task success (team), about $0.0016 LLM cost per completed booking.
- Company information RAG chatbot at GSoft (LangChain, Milvus, OCR, Ollama).
- Applied AI Labs: Langfuse monitoring, hybrid RAG, multi-provider LLM wrappers, user research (coursework).
- User foundation model for GreenSM at VRIC, VinUniversity · ad click-prediction AUC 0.700 → 0.727 on simulated data.
- Vietnamese QA on UIT-ViQuAD 2.0 · F1 0.80 with XLM-R Large.
- Legal document search with TF-IDF and query-likelihood language models (team of 3).