I will build ai chatbot, rag chatbot and full stack llm app

J
jahid_hasan227
J
jahid_hasan227
Jahid Hasan
build ai chatbot, rag chatbot and full stack llm app
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build ai chatbot, rag chatbot and full stack llm app
Full Screen
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build ai chatbot, rag chatbot and full stack llm appbuild ai chatbot, rag chatbot and full stack llm appbuild ai chatbot, rag chatbot and full stack llm app

About this gig

Need a reliable AI developer to build a custom AI chatbot, RAG chatbot, AI agent, or full-stack LLM web app for your business?


I build production-ready AI applications using OpenAI, LangChain, RAG pipelines, vector databases, and MCP server integrations. Whether you need a customer support chatbot, private document chatbot, AI automation workflow, or complete AI web app, I can help you turn your idea into a real working product.


Before you order, I can review your AI idea and suggest the best architecture, tools, timeline, and cost.


What I can build:


  • Custom AI chatbot for your website or business
  • RAG chatbot connected to your documents or data
  • LangChain-based AI apps and workflows
  • AI agents for automation and business tasks
  • MCP server integration for advanced AI tools
  • Vector database setup with Pinecone, ChromaDB, or Weaviate
  • OpenAI, Anthropic, or custom LLM integration
  • Full-stack AI web app with backend, database, and API
  • AWS deployment using Lambda, EC2, or S3


Why choose me?


  • Production-ready and scalable code
  • Secure handling of private business data
  • Clean backend and API architecture
  • Clear communication
  • Post-delivery support


Please message me before order

  • Application Type

    • Web Application

  • Desktop Frameworks

    • Electron
    • React Native for Web

  • AI Type

    • Chat
    • Shopping
    • Education
    • Social Networking
    • Entertainment
    • Dating
    • Maps & Navigation
    • Travel
    • Streaming
    • E-commerce

  • Programming Language

    • JavaScript
    • Python
    • TypeScript
    • React
    • PyTorch

  • Web Frameworks

    • React
    • Angular
    • Express.js (Node.js)
    • Next.js

  • No & Low-Code Builders

    • Bubble
    • Lovable
    • FlutterFlow

Get to know Jahid Hasan

Jahid Hasan

Full Stack AI Developer React NestJS LangChain OpenAI

  • FromBangladesh
  • Member sinceApr 2026
  • Avg. response time1 hour

  • Languages

    English
Hi, I’m a full-stack software engineer with 5+ years of experience building web, mobile, SaaS, microservices, and AI-powered solutions. I help startups, agencies, and businesses turn ideas into clean, scalable, production-ready software. My expertise includes: • React, Next.js, Angular • Node.js, NestJS, Python APIs • Microservices architecture • React Native mobile apps • OpenAI, LangChain, RAG, AI agents • AWS, Docker, CI/CD • PostgreSQL, MongoDB, Redis Why work with me? • 30+ projects delivered • Clean, maintainable code • Clear communication • Scalable architecture • Long-term support

My Portfolio

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