FastAPI is built on top of Starlette (ASGI) and uses Pydantic for data modelling, letting it handle asynchronous tasks and concurrent requests efficiently. It often outperforms traditional synchronous Python frameworks like Flask and Django in I/O-bound workloads.

Thanks to Python's type hints and built-in data validation, automatic generation of OpenAPI/Swagger documentation, dependency injection, and minimal boilerplate, FastAPI lets developers build, test, and iterate APIs much faster with fewer bugs.

FastAPI shines in microservices, real-time applications, ML/AI model serving, dashboards, event-driven APIs, and systems requiring WebSockets. Its async support makes it suitable where high concurrency is needed.

Integration with tools like Uvicorn, Starlette, Pydantic, automatic docs (Swagger UI/ReDoc), JSON Schema, good support for background tasks / WebSockets, plus ease of testing with e.g. pytest.

Over a recent 6-month period, there were 137 FastAPI-skill vacancies in the UK alone, with year-on-year job ads showing substantial increases in demand.

Median annual salaries for FastAPI roles average £80,000 in the UK, with competitive packages ranging from €90k–€120k across Europe and similar premium rates in North America.

United States leads with ~5.1k companies, UK has ~1.4k companies, and India shows 1,000+ active job postings for FastAPI developers across major tech hubs.

FastAPI roles are highly remote-friendly, with many listings offering remote/hybrid options, enabling companies to source global talent and reduce hiring friction.

Uvicorn & Hypercorn dominate ASGI server deployments, Pydantic v2 achieves rapid adoption, with SQLAlchemy, Tortoise ORM, and Prisma as leading database solutions.

26,000+ companies across 112 countries use FastAPI in production. Over 90% of projects use Python type hints with automatic OpenAPI documentation generation.

Async endpoints used in >80% of new projects, Pydantic v2 migration accelerated, WebSocket support widely adopted for real-time applications.

pytest remains the leading choice with strong automated testing adoption in production FastAPI applications, ensuring reliability and maintainability.

The Strategic Imperative for FastAPI Talent

The statistics are compelling: FastAPI is no longer a niche Python framework — it's one of the most widely adopted backend solutions globally. As of 2025, over 26,000 companies across 112 countries use FastAPI in production, including tech leaders like Uber, Netflix, Microsoft, and Expedia. With 134+ million monthly downloads from PyPI, its adoption curve shows no signs of slowing down.

The FastAPI Developer Shortage

Much like the frontend world experienced with React, backend hiring is now seeing a crunch in FastAPI expertise. Job posting data from LinkedIn and Indeed shows 1,000+ active FastAPI job openings in India alone, with similar demand spikes in North America and Europe. In the UK, FastAPI salaries are averaging £80,000+, with year-on-year vacancy growth.