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English
$
USD
I will build ai powered backend using fastapi and openai
Shahadath Sajib
About this gig
I will build secure, scalable, and high-performance backend systems using FastAPI for your web and mobile applications. My focus is on creating production-ready APIs with clean architecture and strong performance.
I develop RESTful APIs, authentication systems, database structures, and AI-powered features such as chatbots, smart search, OpenAI/Gemini/Claude integrations, and RAG-based systems with vector databases.
I ensure your backend is designed for scalability, maintainability, and real-world production use, with proper structure and optimization.
What I Offer
- REST API development with authentication and database integration
- AI integrations (OpenAI, Gemini, Claude, chatbots, smart search, RAG systems)
- Clean, modular, and scalable backend architecture
- Production-ready backend optimized for performance
Special Note
Please contact me before placing an order to discuss your project requirements.
I also accept custom backend and AI system development requests based on your needs.
Get to know Shahadath Sajib
Shahadath Sajib
Full Stack Web Developer
- FromBangladesh
- Member sinceMar 2026
Languages
Bengali, English
I'm a Full-Stack Web Developer with 2+ years of professional experience building modern, scalable web applications.
I specialize in React, Next.js, Node.js, NestJS, FastAPI, REST APIs, databases, authentication, and deployment.
I build secure, high-performance, production-ready solutions with clean architecture and maintainable code. Whether you need a custom web app, backend API, bug fixes, or deployment, I'm committed to delivering reliable results with clear communication.
FAQ
What technologies do you use for backend development?
I specialize in FastAPI (Python) for backend development and work with PostgreSQL, MongoDB, and modern AI APIs like OpenAI, Gemini, and Claude.
Can you deploy my backend and connect it to a domain?
Yes, I can handle Linux server setup, deployment, and domain configuration to make your backend production-ready.
Do you provide AI integration in the backend?
Yes, I can integrate AI features like chatbots, smart search, RAG systems, vector databases, and multi-LLM APIs.
What do I need to provide to get started?
You can share your project idea, required features, and any API or AI needs. If you are unsure, we can plan everything together.
Can you deliver faster than the package timeline?
Yes, faster delivery is possible depending on the project complexity. Please contact me first to confirm feasibility.
Will my backend be secure and maintainable?
Yes, I follow best practices for security, clean architecture, and scalable design to ensure long-term maintainability.
Do you offer support after delivery?
Yes, I provide post-delivery support for bug fixes and minor adjustments to ensure smooth integration.
How do revisions work?
Each package includes revisions: Basic (2), Standard (3), Premium (4). Extra revisions can be added if needed.
