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Junior Full Stack Developer Interview Questions

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8,196 junior full stack developer interview questions shared by candidates

Diff btwn Interface and abstract class Diff btwn Stored Procedure and Function Dependency Injection - diff btwn lifetimes How does JWT authentication works on server Controllers attributes What is encapsulation Repository Pattern Open Closed Principle Generics IEnumerable vs IQueryable
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Dot Net Full Stack Developer

Interviewed at Infosys

3.6★
Jul 5, 2026

Diff btwn Interface and abstract class Diff btwn Stored Procedure and Function Dependency Injection - diff btwn lifetimes How does JWT authentication works on server Controllers attributes What is encapsulation Repository Pattern Open Closed Principle Generics IEnumerable vs IQueryable

In L1->4 sum array question arr=[2,4,3,5,6,1,0] target=10 something like this. In L2-> asked to right a user auth api and use it in the endpoint (i used Depends from fastAPI) and another coding question was about parenthesis match is_valid_parenthesis([({})]) #TRUE. React question- useLayoutEffect vs useEffect, useMemo, useCallback. js- output based js question related to event loop priority like promise vs setTimeout vs console.log use chatGPT it will give you the exact question. GenAi- which model i have used like GPT-4o similar like this try to read about the Transformer how it works. sql- A 1 1 1 1 1 B 1 1 1 1 what will be the inner join left join right join and full outer join. you need to be prepared i lost my chance. Please don't do the same. Try to explain the code you write.
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Python Full Stack Developer

Interviewed at UST

3.8★
Jun 3, 2025

In L1->4 sum array question arr=[2,4,3,5,6,1,0] target=10 something like this. In L2-> asked to right a user auth api and use it in the endpoint (i used Depends from fastAPI) and another coding question was about parenthesis match is_valid_parenthesis([({})]) #TRUE. React question- useLayoutEffect vs useEffect, useMemo, useCallback. js- output based js question related to event loop priority like promise vs setTimeout vs console.log use chatGPT it will give you the exact question. GenAi- which model i have used like GPT-4o similar like this try to read about the Transformer how it works. sql- A 1 1 1 1 1 B 1 1 1 1 what will be the inner join left join right join and full outer join. you need to be prepared i lost my chance. Please don't do the same. Try to explain the code you write.

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