I will build ai saas web apps using react nextjs nodejs fastapi and llms


About this gig
Build a Production-Ready AI Web Application
Looking to build an AI-powered web application that is fast, scalable, and ready for real users? You're in the right place.
I'm a Google Summer of Code 2026 Contributor at the Internet Archive and a former Software Engineer & Instructor at AlgoUniversity. I specialise in building modern AI products using React, Next.js, Node.js, FastAPI, TypeScript, PostgreSQL, MongoDB, Redis, Docker, and leading LLMs like OpenAI and Gemini.
What I can build
- AI-powered SaaS applications
- AI agents and workflow automation
- Custom chatbots
- LLM integrations (OpenAI, Gemini)
- REST APIs and backend systems
- Authentication and user dashboards
- Database design and deployment
- Full-stack web applications
Why work with me?
- Production-quality code
- Scalable architecture
- Clean and maintainable implementation
- Fast communication
- On-time delivery
- Complete source code
If your project has unique requirements, feel free to message me before placing an order. I'd be happy to discuss the best solution for your idea.
Let's build something amazing together!
Get to know Sudipta Das
AI Full Stack Developer
- FromIndia
- Member sinceJul 2026
Languages
Hindi, English
My Portfolio
FAQ
What information do you need before starting?
Please share your project idea, required features, preferred tech stack (if any), design references, and any APIs or AI models you want to integrate. If you're unsure, I can help you choose the best solution.
Which AI models do you work with?
I have experience integrating OpenAI (GPT), Google Gemini, and other LLM APIs. I can also build AI agents, chatbots, workflow automation, and AI-powered web applications.
Will I receive the complete source code?
Yes. Unless agreed otherwise, you'll receive the complete source code and ownership of the project upon delivery.
Can you deploy my application?
Yes. I can deploy your project on platforms such as Vercel, Railway, Render, Docker, VPS, or cloud providers depending on your requirements.
Can you build a custom AI application from scratch?
Absolutely. Whether it's an MVP, SaaS platform, AI agent, chatbot, dashboard, or a full-stack web application, I can build it according to your requirements.
Do you provide support after delivery?
Yes. I'll help you resolve any issues related to the delivered work and provide post-delivery support according to the package you choose.

