I will build langchain ai chatbots and rag applications with openai and vector database

A
aa_galib
A
aa_galib
Asadullah
build langchain ai chatbots and rag applications with openai and vector database
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build langchain ai chatbots and rag applications with openai and vector database
Full Screen
Full Screen
build langchain ai chatbots and rag applications with openai and vector databasebuild langchain ai chatbots and rag applications with openai and vector databasebuild langchain ai chatbots and rag applications with openai and vector database

About this gig

I build production AI chatbots and RAG systems that actually work from simple Q&A bots to complex multi-agent applications with document retrieval.


What I Deliver

Chatbot Development: LangChain conversation chains and agents. OpenAI GPT-4 / Claude integration. Custom prompt engineering and templates. Conversation memory and context management.

RAG (Retrieval-Augmented Generation): Document ingestion and chunking strategies. Vector embeddings with OpenAI/HuggingFace. Vector databases: Chroma, Pinecone.

User Interfaces: Streamlit chat interfaces. FastAPI backend for production.


Tech Stack: LangChain, LlamaIndex, OpenAI GPT-4, Claude, HuggingFace, Chroma, Pinecone, Weaviate, FastAPI, Streamlit


Background:

  • Built course recommender chatbot using LangChain, Chroma, and OpenAI
  • Created career guidance bot with profile-based recommendations
  • Developed serverless AI proofreader on AWS with OpenAI integration
  • Published ML research on text classification and neural networks (IEEE, Springer)


Use Cases:

  • Customer support chatbots
  • Document Q&A systems
  • Knowledge base assistants
  • Course/product recommenders
  • Internal company assistants
  • Legal/medical document analysis


  • AI engine

    • GPT
    • Gemini
    • Langchain

  • Programming language

    • Python
    • JavaScript

Get to know Asadullah

Asadullah

Python Backend Developer, AWS, Data Engineering

5.0(3)
  • FromBangladesh
  • Member sinceOct 2023
  • Avg. response time1 hour
  • Last delivery9 months

  • Languages

    Bengali, English
I build backend APIs and data systems that scale. 5+ years building production systems: FastAPI/Django backends, AWS serverless platforms (10K+ users), async data pipelines, OpenSearch integrations (100K+ docs), web scrapers, and InfluxDB time-series systems with Grafana dashboards. I deliver clean, documented, production-ready code — APIs with proper validation, ETL pipelines with error handling, and infrastructure that doesn't break at 3 AM. Published researcher (Springer, IEEE) on distributed systems. Message me with your requirements — I'll give you an honest assessment.

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