I will build langchain langgraph ai agents and rag chatbots

C
changboa66
C
changboa66
Changbao Z
build langchain langgraph ai agents and rag chatbots
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build langchain langgraph ai agents and rag chatbots

About this gig

I will build production minded AI integrations LangChain LangGraph agents and RAG chatbots for your business or internal tools.



I can help you build a chatbot that answers from private documents design LangGraph workflows with routing memory tool use and human review integrate OpenAI GPT Llama embeddings and vector databases create FastAPI backend APIs with streaming responses or debug an existing LangChain RAG prototype.



My background combines 14 years of Java backend engineering with hands on AI application work LangGraph multi agent workflows LangChain LlamaIndex ChromaDB hybrid retrieval reranking RAG evaluation FastAPI and production API design.



Please message me before ordering so I can confirm your documents model provider data sources deployment target and timeline.

  • AI engine

    • GPT
    • Llama
    • Langchain

  • Programming language

    • Java
    • JavaScript
    • Python
    • TypeScript

Get to know Changbao Z

Changbao Z

AI Agent and RAG Backend Developer Java LangChain LangGraph

  • FromChina
  • Member sinceJul 2025
  • Avg. response time1 hour

  • Languages

    English, Chinese
I am a backend developer with 13+ years of Java, API, database, and Linux experience. I now focus on AI application backends, including LangChain and LangGraph agents, RAG chatbots, OpenAI and Llama integrations, vector search, FastAPI services, and production ready API design. I can help you build reliable AI workflows, document based chatbots, backend integrations, and agent systems with clean code, clear communication, and practical engineering judgment.

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