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Changbao Z
@changboa66
AI RAG Chatbot and Backend API Developer
China
Chinese, English
About me
I help businesses build practical AI chatbots, RAG knowledge bases, and backend API integrations. I have 13+ years of Java, Spring Boot, REST API, MySQL, and Linux experience, and now focus on AI application backends with OpenAI, Claude, DeepSeek, LangChain, LangGraph, vector search, Python FastAPI, and n8n automation. I can build document chatbots, source-cited RAG systems, AI agents, API integrations, and reliable backend services with clean code, clear communication, and setup documentation.
Skills
Changbao Z
Offline •
Average response time: 1 hour
See my services
API & Integrations
I will integrate ai apis into java spring boot apps
Custom Websites
I will build an ai dashboard or admin web app
