20 Best Backend Interview Questions with PDF Download

Backend Interview Questions

20 Best Backend Interview Questions with PDF Download

Before moving forward to the Backend interview questions, we must know who are the backend developers. Backend developers are those developers who work on the server side of web applications to ensure that data gets appropriately transmitted between the client and server. 

In this blog, we will explore the 20 Backend interview questions from all important topics, so that you understand each and everything before your interview.

Download 20 Best Backend Interview Questions

Top 10 Best Websites for Backend Interview Questions


Preparing for backend interview questions can be a challenging task. Whether you’re a professional or just starting out, having access to quality resources can make all the difference. Have a look at the websites.


1. LeetCode

LeetCode is a popular platform for practicing coding problems, with a strong focus on data structures and algorithms.


Why It’s Great for Backend Interview Questions:

LeetCode offers a wide range of problems that are frequently asked in technical interviews. The platform also has company-specific questions, which can help you prepare for interviews at specific companies.


Key Features

Over 1,900 coding problems

Company-specific question sets

Detailed solutions and discussions


2. HackerRank

HackerRank is another excellent resource for practicing coding challenges and preparing for technical interviews.


Why It’s Great for Backend Interviews

HackerRank covers a broad spectrum of topics, including data structures, algorithms, databases, and SQL, making it a comprehensive tool for backend developers.

Key Features

Challenges in multiple programming languages

Tutorials and interview preparation kits

Real-world problem simulations


3. GeeksforGeeks

GeeksforGeeks is a comprehensive computer science portal that provides tutorials, coding problems, and interview questions.


Why It’s Great for Backend Interviews

This site offers a vast collection of articles and problems specifically tailored for backend development. You can find questions on data structures, algorithms, system design, and more.


Key Features

Extensive library of coding problems

Detailed explanations and solutions

Dedicated section for interview preparation


4. InterviewBit

InterviewBit is a platform designed to help you prepare for coding interviews with a structured and comprehensive approach.


Why It’s Great for Backend Interviews

InterviewBit provides curated interview questions and problems, helping you focus on what’s most likely to come up in your interview.


Key Features

Curated interview questions

Real-time online coding environment

Mock interviews and performance tracking


5. CodeSignal

CodeSignal offers coding tests and challenges that are tailored to specific job roles and companies.


Why It’s Great for Backend Interviews

CodeSignal’s platform is used by many companies for their actual technical interviews, giving you a chance to practice in an environment similar to the real thing.


Key Features

Role-specific coding challenges

Certification tests

Customizable coding tests for practice


6. Glassdoor

Glassdoor is primarily known as a company review site, but it also offers a wealth of interview questions shared by candidates.


Why It’s Great for Backend Interviews

Glassdoor’s interview questions section can give you insight into the types of questions asked by specific companies, helping you prepare more effectively.


Key Features

Real interview questions from candidates

Company-specific questions and experiences

Community-driven feedback and insights


7. Pramp

Pramp offers a unique platform where you can practice live coding interviews with peers.


Why It’s Great for Backend Interviews

Pramp’s peer-to-peer mock interviews provide a realistic interview experience, allowing you to practice both answering and asking questions.


Key Features

Live mock interviews with peers

Detailed feedback after each session

Questions and problems relevant to backend development


8. CareerCup

CareerCup is a website focused on technical interview preparation, offering a variety of coding problems and interview questions.


Why It’s Great for Backend Interviews

CareerCup’s extensive collection of real interview questions, submitted by users, can help you get a sense of what different companies are looking for.


Key Features

Real interview questions from top tech companies

Detailed problem discussions

Books and resources for in-depth preparation

9. Exercism


Exercism offers coding exercises and mentorship to help you improve your coding skills.


Why It’s Great for Backend Interviews

Exercism’s exercises cover various backend languages and paradigms, making it a great resource to refine your coding skills in preparation for an interview.


Key Features

Over 50 programming languages

Mentorship from experienced developers

Structured learning paths and exercises

10. Codewars

Codewars is a community-driven platform where developers improve their skills by training on coding challenges.


Why It’s Great for Backend Interviews

Codewars’ kata (challenges) are created by the community and often mirror real-world problems, providing practical experience that can be useful in interviews.


Key Features

Wide range of coding challenges

Community-driven problem creation and solutions

Gamified learning experience


Preparing for backend interview questions requires a solid understanding of various concepts and the ability to solve coding problems efficiently. These ten websites offer a mix of coding challenges, real interview questions, and learning resources that can help you hone your skills and boost your confidence. 



1. How do I prepare for a backend interview?

LeetCode and HackerRank are both excellent websites for preparing for backend interview questions.


2. Which website offers the best learning resources for backend development?

GeeksforGeeks and InterviewBit provide comprehensive tutorials and problems specifically tailored for backend development.