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Fiverr Pro
English
$
USD
I will build production ready fastapi backend with ai integration rag agents
Kabi
About this gig
Need a fast, reliable backend for your AI-powered app, SaaS tool, or automation system? I build production-ready APIs with FastAPI (Python) the framework behind most modern AI applications.
What I deliver:
- RESTful API endpoints with automatic OpenAPI documentation
- LLM/AI integration connect OpenAI, Claude, or open-source models to your backend
- Database layer PostgreSQL, Supabase, MongoDB, or SQLite with async queries
- Authentication API keys, JWT tokens, or OAuth2 flows
- File processing upload, parse, and process documents, images, or CSVs
- Background tasks and scheduled jobs for long-running operations
- Docker containerization and deployment documentation
My process:
1. You describe what your app needs to do
2. I scope the API endpoints and confirm the package
3. I build iteratively you see progress, not just a final dump
4. I deliver source code, API docs, a README, and deployment instructions
Message me with your project details I'll tell you exactly what's needed.
Get to know Kabi
Kabi
Technical Founder and Senior Architect in Production AI and Custom Automation
- FromCanada
- Member sinceOct 2015
- Last delivery1 year
Languages
English, Tamil
Full-stack developer specializing in AI automation, workflow integration, and backend systems. I build production tools with Python, FastAPI, Node.js, and Google Apps Script, including AI-powered inventory systems, work order automation with dynamic QR codes, and custom MCP server integrations for Claude and Cursor. I work with n8n, LangChain, and LLM APIs daily, and I ship real systems used in manufacturing environments. Based in Canada.
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FAQ
Why FastAPI over Django or Express?
FastAPI is async by default (handles high concurrency), auto-generates interactive API docs (Swagger UI), and has native support for Python's AI/ML ecosystem. If your project involves AI, FastAPI is the right backend. If you specifically need Django or Express, message me first.
Can you deploy the API for me?
Standard and Premium include Docker containerization. Premium includes full cloud deployment. For Basic, I deliver a deploy guide for Railway, Render, or your VPS. I can also add deployment as a Gig Extra.
Do I need to provide the frontend?
No — I build the backend API independently. It works with any frontend (React, Next.js, Flutter, mobile) or can be consumed by other services. If you don't have a frontend yet, the auto-generated Swagger UI lets you test every endpoint immediately.
Can you add AI/LLM features to an existing backend?
Yes. If you already have a FastAPI or Python backend, I can add AI endpoints, LLM integration, or data processing features without rebuilding. Message me with your repo or architecture overview.
What if my project is more complex than Premium?
Message me before ordering. For larger projects I'll create a custom offer with detailed milestones. I've built production systems with 20+ endpoints and complex AI pipelines happy to scope anything.
