API Design & Integration (Python, Django, FastAPI)

Saeed Mohammadpour

Starting at

1,200

About this service

Summary

I design and build reliable APIs using Python, Django, and FastAPI. My work connects products, data, and external services through secure, well-documented endpoints. With 15 + years in backend engineering, I focus on clarity, performance, and integrations that simply work.

FAQs

Can you work with our existing backend?
Yes — I can extend or refactor existing Django/FastAPI codebases to add new endpoints or improve reliability.
What kind of APIs do you build?
REST, GraphQL, and custom integrations with AI or third-party services such as OpenAI or Stripe.
Will I receive documentation?
Absolutely. Every project includes OpenAPI/Swagger docs, example requests, and deployment instructions.
Do you offer maintenance?
Yes. I provide optional monthly retainers for monitoring, scaling, or adding new integrations.

What's included

1️⃣ API Architecture Blueprint
Design of REST or GraphQL API structure with clear endpoint hierarchy and data flow. Ensures scalability, consistency, and clean documentation before coding begins.
2️⃣ Secure API Implementation
Development of authenticated, rate-limited, and well-tested API endpoints in Django / FastAPI. Includes proper error handling and performance optimization.
3️⃣ Third-Party & AI Integration
Connection of external APIs or AI services (e.g., OpenAI, Stripe, Zapier). Delivers reliable, maintainable integrations with clear interface definitions.
4️⃣ API Documentation & Testing
Complete documentation (OpenAPI / Swagger) with sample requests and automated tests. Simplifies future collaboration and onboarding for other developers.
5️⃣ Deployment & Handover
Dockerized deployment setup plus environment configuration and handover notes. Allows immediate rollout to staging or production environments.

Example projects