FastAPI
FastAPI is a modern tool for building web services and APIs (interfaces that let different software systems talk to each other). It uses Python, which is one of the most popular and easy-to-learn programming languages. Developers choose FastAPI because it helps them create reliable and fast web services with minimal effort. The "Fast" in its name comes from its excellent speed performance, both in development time and running speed. It's similar to other tools like Flask or Django but is known for being particularly quick to work with and having built-in features that help catch errors early. Think of it as a ready-made blueprint that helps developers build web services much faster than starting from scratch.
Examples in Resumes
Created high-performance web services using FastAPI
Developed and maintained multiple FastAPI microservices handling thousands of requests
Built REST APIs with FastAPI for customer-facing applications
Typical job title: "FastAPI Developers"
Also try searching for:
Where to Find FastAPI Developers
Online Communities
Job Boards
Learning Resources
Professional Networks
Example Interview Questions
Senior Level Questions
Q: How would you design a large-scale system using FastAPI?
Expected Answer: A senior developer should explain how they would break down the system into smaller services, handle data flow between services, ensure security, and maintain performance at scale. They should mention concepts like documentation, testing, and deployment strategies in simple terms.
Q: How do you ensure security in a FastAPI application?
Expected Answer: Should discuss different ways to protect the application, such as user authentication, data encryption, and secure data handling. They should also mention how FastAPI's built-in features help prevent common security issues.
Mid Level Questions
Q: How do you handle database operations in FastAPI?
Expected Answer: Should explain how they connect to databases, manage data, and ensure efficient data retrieval. They should be able to discuss different database options and how to choose the right one for different situations.
Q: Explain how you would test a FastAPI application
Expected Answer: Should describe different types of testing, how to check if the application works correctly, and how to ensure changes don't break existing features.
Junior Level Questions
Q: What is an API endpoint and how do you create one in FastAPI?
Expected Answer: Should be able to explain that an endpoint is like a web address that performs a specific function, and demonstrate basic knowledge of creating simple endpoints that can receive and send data.
Q: How do you handle user input validation in FastAPI?
Expected Answer: Should explain how FastAPI helps check if user-submitted data is correct before processing it, and how to show helpful error messages when something is wrong.
Experience Level Indicators
Junior (0-2 years)
- Basic API endpoint creation
- Simple data handling
- Basic error handling
- Understanding of HTTP methods
Mid (2-4 years)
- Database integration
- API authentication and security
- Testing and documentation
- Performance optimization
Senior (4+ years)
- System architecture design
- Advanced security implementation
- Scalability and high-performance solutions
- Team leadership and best practices
Red Flags to Watch For
- No knowledge of Python basics
- Unable to explain what an API is
- No experience with version control (like Git)
- Lack of understanding about web security basics
- No experience with databases
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