Hire FastAPI developers
A Python framework for building typed APIs quickly.
- Current versionFastAPI 0.141.1released July 2026
- Python requirementPython 3.10 or newersupports 3.10 to 3.14, per PyPI
- Developer usage14.8% of developersused FastAPI in the past year, Stack Overflow Developer Survey 2025
Checked September 2026 · FastAPI release notes, PyPI, Stack Overflow Developer Survey 2025
FastAPI is a Python web framework for building APIs. You describe your data with Python type hints, and it validates requests and writes interactive OpenAPI documentation for you. It supports async code, which suits services that spend much of their time waiting on databases or other APIs.
Hire a FastAPI developer when your API needs to sit close to Python code such as machine-learning models, data pipelines or AI features. A good FastAPI developer will also know Pydantic, SQLAlchemy and how to deploy Python services properly.
What a FastAPI developer does
- Build REST APIs with automatic request validation and OpenAPI docs
- Wrap machine-learning models and LLM calls in production APIs
- Model data with Pydantic and connect to PostgreSQL or MySQL through SQLAlchemy or SQLModel
- Add authentication with OAuth2, JWT and API keys
- Write async endpoints, background tasks and WebSocket handlers
- Containerise and deploy services with Docker on AWS, Azure or Google Cloud
What businesses build with it
- APIs that serve machine-learning or AI model predictions
- Backends for mobile and single-page web apps
- Data and analytics services built on existing Python code
- Internal tools and microservices that need clear API docs
- Webhooks and integration layers between business systems
Why teams choose it
- Very little code for a documented, validated API
- Direct access to the Python data and AI ecosystem
- Async support for services with many slow network calls
- Trade-off: it is still versioned below 1.0 and releases often, so pin versions and read release notes; it also has no built-in admin panel or ORM, so Django suits content-heavy apps better
Roles people hire for
- FastAPI Developer
- Python Backend Developer
- Python API Developer
- ML/AI Backend Engineer
Common questions
Should I choose FastAPI or Django?
FastAPI is the better fit for an API-only service, especially one tied to AI or data code. Django is better when you want a full web application with an admin panel, ORM and user accounts ready to use. Many teams run both, with Django for the main app and FastAPI for model-serving APIs.
Is FastAPI ready for production when it is still below version 1.0?
Yes, many teams run it in production. The version number reflects how often it changes, not a lack of stability. A careful developer pins the version, tests upgrades and reads the release notes before moving up.
Often used with
Hire FastAPI developers
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Tell us what you are building. A few lines is enough. We reply by email, usually the same working day.