FastAPI, created by Sebastián Ramírez and first released in 2018, is a modern, high-performance web framework for building APIs with Python. It is built on top of Starlette for async support and Pydantic for data validation. FastAPI is one of the fastest Python web frameworks available, with performance comparable to Node.js and Go, thanks to its async-first design and automatic validation via Python type hints.
The FastAPI job market in India is growing rapidly, particularly in AI/ML companies, data-driven startups, and organizations building high-performance APIs. Per 6figr 2026, employees with FastAPI skills earn an average of ₹30.9 LPA, mostly ranging from ₹18.1–59.9 LPA. Per Glassdoor 2026, Python FastAPI Developer salaries range from ₹4–7 LPA for 1–3 years of experience, with senior developers reaching ₹15–30+ LPA. Per Glassdoor, there are over 900 FastAPI-specific job listings in India.
FastAPI's key differentiators include automatic interactive API documentation (Swagger UI and ReDoc), dependency injection system, OAuth2 authentication with JWT tokens, WebSocket support, and background tasks. The framework leverages Python 3.7+ type hints for request/response validation, serialization, and editor support — reducing bugs and development time. FastAPI is particularly popular for serving machine learning models, building data pipelines, and creating microservices.
For Pune learners, FastAPI is typically taught as a 1–2 month module for developers with solid Python fundamentals. It is the highest-growth Python backend framework in 2026 and is increasingly preferred over Flask for new API projects. Companies value FastAPI developers who understand async programming, Pydantic models, SQLAlchemy, and can deploy containerized APIs to the cloud.