I will do full stack ai cross platform development

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Hasan Raza

About this gig

I will integrate AI features, LLM chatbots, and AI agents into your existing web or mobile app.


I can connect OpenAI, Gemini, Claude, DeepSeek, or other LLM APIs with your existing frontend/backend and build real product features around them not just a basic API call.


What I can build:

AI chatbot for your website or app

AI assistant with custom prompts and tools

AI agent that can call APIs and perform tasks

RAG chatbot using your documents or database

AI integration with your existing backend

Database-connected AI workflows

Admin dashboard or internal AI assistant

Clean API routes and frontend integration


Tech I can work with:

Next.js, React, Node.js, FastAPI, Python, PostgreSQL, Supabase, Appwrite, Firebase, MongoDB, OpenAI API, Gemini API, Claude API, LangChain, LangGraph, vector databases, and more.


Before ordering, please message me with your app details, current tech stack, and the AI feature you want. I will suggest the best approach and package.


Note: Real model fine-tuning requires a proper dataset and may need a custom offer. For most apps, RAG, prompt engineering, and agent workflows are better and more cost-effective.

Get to know Hasan Raza

Hasan Raza

Product Engineer

  • FromIndia
  • Member sinceMay 2026
  • Languages

    English
I am a Product Engineer and open-source contributor with expertise in building AI-powered systems and cross-platform applications. I specialize in TypeScript, Python, and LLM integration, having developed multi-agent engines, real-time threat detection platforms, and a flagship AI manga reader SDK. My experience spans from shipping features in monorepo environments to engineering autonomous clinical operation agents.

My Portfolio