I will build ai saas web apps with langchain, rag, llms and vector databases

S
saeedhussain505
S
saeedhussain505
Saeed H Barcha
build ai saas web apps with langchain, rag, llms and vector databases
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build ai saas web apps with langchain, rag, llms and vector databases
Full Screen
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build ai saas web apps with langchain, rag, llms and vector databasesbuild ai saas web apps with langchain, rag, llms and vector databasesbuild ai saas web apps with langchain, rag, llms and vector databases

About this gig

Full-Stack AI Developer | AI Web App Developer | LangChain Developer | RAG Expert | LLM Integration | Vector Database | React JS | Node JS | Python


Hello,


I'm Saeed, a Full-Stack AI Developer with 4+ years of experience building modern websites, scalable web apps, and AI-powered solutions.


My expertise includes:

  • AI web apps, SaaS platforms, and chatbots
  • LangChain, LangGraph, RAG pipelines, and AI agents
  • OpenAI, Claude, Gemini, Mistral, and Llama integrations
  • Pinecone, ChromaDB, FAISS, Qdrant, and pgvector
  • React JS, Next.js, TypeScript, and Tailwind CSS
  • Node JS, Express JS, Python, FastAPI, REST APIs, and JWT
  • MongoDB, PostgreSQL, MySQL, Supabase, and Firebase
  • Deployment on AWS, Vercel, Docker, and DigitalOcean
  • I can build document chatbots, AI assistants, knowledge bases, semantic search systems, automated workflows, and complete AI SaaS applications.


You will receive clean code, responsive design, secure architecture, and a solution tailored to your needs.


I focus on clear communication, reliable delivery, and production-ready results that support your business growth.


Please contact me before placing an order to discuss your project.


Thank you.


  • AI engine

    • ChatGPT
    • Gemini
    • Azure OpenAI
    • Grok
    • Hugging Face
    • Ollama
    • OpenRouter

  • Tools & frameworks

    • LangChain
    • LangGraph
    • LlamaIndex
    • CrewAI
    • OpenAI Agents SDK
    • n8n

  • AI solution type

    • AI agent
    • AI chatbot
    • Rag system
    • AI workflow
    • AI assistant

  • Purpose

    • Customer support
    • Lead generation
    • Marketing
    • Data analysis
    • Reporting
    • Project management
    • It support
    • Healthcare

Get to know Saeed H Barcha

Saeed H Barcha

Full Stack Developer and AI Engineer, MERN , PERN , UIUX Designer Figma

5.0(57)
  • FromPakistan
  • Member sinceJul 2021
  • Avg. response time1 hour
  • Last delivery7 months

  • Languages

    Urdu, English, Hindi
Full-Stack Developer & AI Engineer with 5+ years of experience building scalable, secure, and high-performance web applications using MERN & PERN stacks. Expert in React, Node.js, MongoDB, PostgreSQL, and Figma. I specialize in advanced AI solutions including RAG, Agentic AI systems, LLMs, and LangChain, creating intelligent, data-driven applications. I deliver clean, maintainable code and intuitive, user-friendly designs—handling everything from backend architecture to pixel-perfect interfaces tailored to your business needs.

My Portfolio

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