Fullstack Developer Interview Questions

4,005 fullstack developer interview questions shared by candidates

They asked how to optimize unnecessary re-renders in React applications. I explained React.memo, useCallback, useMemo, dependency management, component structure, and using the React Profiler to identify performance bottlenecks effectively.
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Fullstack Developer

Interviewed at Travelopia

3.5
Feb 14, 2026

They asked how to optimize unnecessary re-renders in React applications. I explained React.memo, useCallback, useMemo, dependency management, component structure, and using the React Profiler to identify performance bottlenecks effectively.

Then some backend questions related to HTTP methods what are all methods, which method is used for what purpose, what differences between various methods, how to authenticate users, and how does the authentication authorization flow work?
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Fullstack Software Engineer

Interviewed at BrowserStack

3.9
Dec 17, 2024

Then some backend questions related to HTTP methods what are all methods, which method is used for what purpose, what differences between various methods, how to authenticate users, and how does the authentication authorization flow work?

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