1632 interview questions for Back-end developer (2025)

91 votes3595 runs5 comments

41 votes2831 runs0 comment

37 votes3292 runs4 comments

31 votes1682 runs1 comment

28 votes1781 runs1 comment

26 votes2644 runs

Pierreat Sep 19, 2022

23 votes3417 runs

Camilleat Apr 27, 2023

21 votes2053 runs0 comment

Théoat Mar 28, 2022

19 votes2788 runs0 comment

19 votes584 runs1 comment

authentication

Damienat Sep 6, 2023

17 votes2804 runs0 comment

16 votes3197 runs0 comment

control flow

Thomas De verdièreat Dec 16, 2021

16 votes2771 runs0 comment

16 votes2713 runs1 comment

16 votes2596 runs0 comment

Anonymous authorat Dec 21, 2021

15 votes2659 runs2 comments

Anonymous authorat Dec 21, 2021

13 votes3623 runs1 comment

Smaïne Millaniat Dec 3, 2021

13 votes1251 runs

12 votes3155 runs0 comment

Thomas De verdièreat Jan 4, 2022

12 votes3053 runs0 comment

Thomas De verdièreat Dec 16, 2021

1632 interview questionsfor Back-end developer (2025)

Test your technical skills before an interview of Back-end developer with 1632 corrected questions. Beginner, Intermediate or Expert level.

1632 interview questionsfor Back-end developer (2025)

Test your technical skills before an interview of Back-end developer with 1632 corrected questions. Beginner, Intermediate or Expert level.

Understanding the differences between `map()` and `forEach()` methods in JavaScript

Write a SQL query to retrieve the list of employees with a salary greater than 5100.

Write a JavaScript function that fetches data from an API and logs it to the console.

Write a Python function that returns the factorial of a number.

Explain the difference between the `include` and `require` functions in PHP.

Write a Java program that prints 'welovedev'.

Fix the following Javascript loop:

Write a Python function that prints the elements of a list.

Select only distinct values in a column using SQL

What is the purpose of the Laravel Sanctum tool?

Write a SQL query to insert data into a table

How many times is the condition `(a++ < 15)` evaluated in the following code? ```java int a = 3; while (a++ < 15) { if ((a++ % 5) == 0) break; } ```

Which SQL keyword is used to sort the result of a SELECT statement?

Update a column in an SQL table

Explain the prototype scope in Spring

A bean with a `session` scope is injected into a bean with a` singleton` scope. What happens when the application starts?

What is the minimum PHP version for Symfony 5?

What is the difference between an interface and an abstract class in Java?

A monitor in Java

How many instance of Integer cannot be freed from memory?