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HackerRank Backend Developer Intern Interview Questions and Answers

Updated 4 Dec 2024

HackerRank Backend Developer Intern Interview Experiences

1 interview found

Interview experience
2
Poor
Difficulty level
-
Process Duration
-
Result
Not Selected

I applied via Approached by Company and was interviewed in Nov 2024. There was 1 interview round.

Round 1 - One-on-one 

(2 Questions)

  • Q1. What are your projects
  • Ans. 

    I have worked on several projects, including a RESTful API for a task management app and a web scraper for real-time data collection.

    • Developed a RESTful API using Node.js and Express for a task management application, enabling users to create, update, and delete tasks.

    • Implemented user authentication with JWT to secure API endpoints and manage user sessions.

    • Created a web scraper using Python and Beautiful Soup to collec...

  • Answered by AI
  • Q2. Why you want to join hackerrank
  • Ans. 

    I want to join HackerRank to enhance my skills, contribute to innovative projects, and be part of a dynamic tech community.

    • HackerRank's focus on coding challenges aligns with my passion for problem-solving and continuous learning.

    • The opportunity to work with experienced developers will help me grow and refine my backend development skills.

    • I admire HackerRank's commitment to improving the hiring process through technolo...

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - You never know what went wrong

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Interview questions from similar companies

Interview experience
4
Good
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Not Selected

I applied via Campus Placement and was interviewed in Aug 2023. There were 3 interview rounds.

Round 1 - Assignment 

We were to make a go Lang api using one of the frameworks the company has made named go-fr

Round 2 - Technical 

(1 Question)

  • Q1. I was asked 3 questions that were easy they were adding two linked list, tortoise and hare method to find the mid of the linked list and 2 sum problem. On top of that verbal skills were also tested as o wa...
Round 3 - Technical 

(1 Question)

  • Q1. The round tested my Go Lang skills and the questions were generally from the assignment and some HR questions

Interview Preparation Tips

Interview preparation tips for other job seekers - Do easy to medium leetcode and SQL as well also prepare for networking and Operating system

Backend Developer Intern Interview Questions Asked at Other Companies

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Q3. What happens when a primitive data type is passed in a method cal ... read more
asked in FastJobs.io
Q4. What is the use of express.json middleware?
Q5. What is the process for writing Django ORM queries to retrieve us ... read more

I applied via Campus Placement and was interviewed in Sep 2021. There was 1 interview round.

Interview Preparation Tips

Interview preparation tips for other job seekers - Be thorough with DSA and low level design. Also have a good idea about Computer science fundamentals .

I appeared for an interview in Jan 2021.

Round 1 - Coding Test 

(3 Questions)

Round duration - 120 minutes
Round difficulty - Hard

This round was very difficult. I never do these much difficulty level of coding questions. But i give my best, and just do every questions by using step by step process.

  • Q1. 

    Hourglass Pattern Problem Statement

    Given an integer 'N', print an hourglass pattern based on the value of 'N'.

    Input:

    The first and only line of input contains an integer, denoting the value of N.

    Out...

  • Ans. 

    Print an hourglass pattern based on the given integer 'N'.

    • Read the integer 'N' as input

    • Print the top half of the hourglass pattern with decreasing numbers

    • Print the bottom half of the hourglass pattern with increasing numbers

    • Handle the constraints for 'N' values between 1 and 50

  • Answered by AI
  • Q2. 

    BFS Traversal in a Graph

    Given an undirected and disconnected graph G(V, E) where V vertices are numbered from 0 to V-1, and E represents edges, your task is to output the BFS traversal starting from the ...

  • Ans. 

    BFS traversal in a disconnected graph starting from vertex 0.

    • Use BFS algorithm to traverse the graph starting from vertex 0.

    • Explore neighbor nodes first before moving to the next level neighbors.

    • Consider bidirectional edges in an undirected graph.

    • Output the BFS traversal sequence for each test case in a separate line.

    • Ensure the BFS path starts from vertex 0 and print connected nodes in numerical sort order.

  • Answered by AI
  • Q3. 

    Sort a Stack Problem Statement

    You are given a stack. Your task is to sort the elements within the stack in ascending order using only push and pop operations. You are allowed to use one additional stack ...

  • Ans. 

    Sort a given stack in ascending order using only push and pop operations with the help of an additional stack.

    • Use one additional stack to assist in sorting the elements.

    • Pop elements from the input stack and push them onto the auxiliary stack in sorted order.

    • Keep track of the current minimum element to maintain ascending order.

    • Pop elements from the auxiliary stack back to the input stack to get the sorted order.

  • Answered by AI
Round 2 - Coding Test 

(2 Questions)

Round duration - 90 minutes
Round difficulty - Easy

This round is also coding round in this round we have a small video call interaction too, in which hr ask few questions to only those whose coding question is correct.

  • Q1. 

    Next Smaller Palindrome Problem Statement

    You are given a palindrome number represented as a string S. Your task is to find the largest palindrome number that is strictly less than S.

    Example:

    Input:
    T...
  • Ans. 

    Find the largest palindrome number strictly less than a given palindrome number.

    • Iterate from the middle towards the start of the number and decrement the digits to create the largest palindrome less than the given number.

    • Handle cases where the number is all '9's by changing the middle digit to '9' and decrementing the rest of the digits.

    • If the number has an odd length, simply mirror the first half to create the largest...

  • Answered by AI
  • Q2. 

    Rotting Oranges Problem Statement

    You are given a grid containing oranges where each cell of the grid can contain one of the three integer values:

    • 0 - representing an empty cell
    • 1 - representing a fre...
  • Ans. 

    Find minimum time to rot all fresh oranges adjacent to rotten oranges in a grid.

    • Use Breadth First Search (BFS) to simulate the rotting process.

    • Track the time taken to rot all fresh oranges.

    • Return -1 if all fresh oranges cannot be rotten.

    • Handle edge cases like empty grid or no fresh oranges.

  • Answered by AI

Interview Preparation Tips

Professional and academic backgroundI applied for the job as Software Development in GurgaonEligibility criteriaAbove 7 cgpaZIGRAM interview preparation:Topics to prepare for the interview - OOPS , Data Structures, Dynamic Programming, Algorithms from variuos coding platforms , Database Management System, Operating System, Web developmentTime required to prepare for the interview - 2 monthInterview preparation tips for other job seekers

Tip 1 : Relax and don't stress. Practice
Tip 2 : Build Resume according to Job Description , but don't lie.
Tip 3 : Have good projects and knowledge regarding important subjects related to interviews

Application resume tips for other job seekers

Tip 1 : Include only genuine information, never lie in resume , it will impact to bad impression. 
Tip 2 : Skills relevant to Job Description
Tip 3 : Resume should not be more than 2 pages 
Tip 4 : Have some projects and internship on your resume because it will give good impression

Final outcome of the interviewSelected

Skills evaluated in this interview

Interview experience
4
Good
Difficulty level
Easy
Process Duration
Less than 2 weeks
Result
Selected Selected

I applied via Campus Placement and was interviewed before Oct 2023. There were 2 interview rounds.

Round 1 - Technical 

(1 Question)

  • Q1. Strings related coding question
Round 2 - Technical 

(1 Question)

  • Q1. Files, os and db related questions
Interview experience
3
Average
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Coding Test 

Dsa questions asked and java basic questions

Interview experience
5
Excellent
Difficulty level
Hard
Process Duration
Less than 2 weeks
Result
Not Selected

I applied via Campus Placement and was interviewed in Oct 2024. There were 4 interview rounds.

Round 1 - Coding Test 

Consist 3 coding questions medium level

Round 2 - Technical 

(2 Questions)

  • Q1. Asked about java concept
  • Q2. Sql query basics
Round 3 - Technical 

(2 Questions)

  • Q1. Asked medium to advance level oops java concept
  • Q2. Deep discussion over project
Round 4 - Technical 

(2 Questions)

  • Q1. Hard level linked list questions
  • Q2. Advanced level sql query
  • Ans. 

    An advanced SQL query can involve complex joins, subqueries, and aggregations to extract meaningful insights from data.

    • Use JOINs to combine data from multiple tables. Example: SELECT * FROM orders JOIN customers ON orders.customer_id = customers.id;

    • Utilize subqueries for filtering results. Example: SELECT * FROM products WHERE id IN (SELECT product_id FROM order_items WHERE quantity > 5);

    • Implement GROUP BY for aggre...

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - Prepare sql and oop concepts well
Are these interview questions helpful?
Interview experience
4
Good
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Not Selected

I applied via Referral and was interviewed in Feb 2024. There were 3 interview rounds.

Round 1 - Coding Test 

Implement tail -f command

Round 2 - Technical 

(2 Questions)

  • Q1. Kafka partitions
  • Q2. Elasticsearch queries
Round 3 - HR 

(2 Questions)

  • Q1. Why Browserstack?
  • Ans. 

    Browserstack is a popular cloud-based cross-browser testing tool used by developers worldwide.

    • Provides access to a wide range of browsers and devices for testing

    • Allows for parallel testing to save time and increase efficiency

    • Integrates with popular testing frameworks like Selenium and Appium

    • Offers features like screenshots, video recordings, and debugging tools

    • Used by companies like Microsoft, Twitter, and Airbnb for t...

  • Answered by AI
  • Q2. Any challenge you faced at current company?
  • Ans. 

    Yes, I faced a challenge in integrating a new third-party API with our existing system.

    • Had to understand the documentation of the API thoroughly

    • Encountered compatibility issues with our system

    • Worked closely with the API provider to troubleshoot and resolve issues

  • Answered by AI

I applied via Recruitment Consulltant and was interviewed in Oct 2022. There were 5 interview rounds.

Round 1 - Resume Shortlist 
Pro Tip by AmbitionBox:
Keep your resume crisp and to the point. A recruiter looks at your resume for an average of 6 seconds, make sure to leave the best impression.
View all tips
Round 2 - Aptitude Test 

The aptitude test was in online mode. There were 20 mcq questions and 5 coding questions ranging from easy to hard

Round 3 - Group Discussion 

After the Aptitude test, the gd was kept in offline mode ( at office ), the topic was "the pros and cons of online classes

Round 4 - Technical 

(1 Question)

  • Q1. In the 1st technical round, basic questions regarding the languages which i have mentioned in resume was asked. I mentioned python and C in my resume and a coding problem was asked to solve and to further ...
Round 5 - Technical 

(1 Question)

  • Q1. In the second technical OOPS concepts and DSA questions were asked

Interview Preparation Tips

Topics to prepare for Zopsmart Technology Software Developer interview:
  • DSA
  • Algorithms
  • Coding
  • resume
Interview preparation tips for other job seekers - If you pass the last technical round then you will be selected in HR round for the same.
Interview experience
3
Average
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Technical 

(2 Questions)

  • Q1. Coding question on DSA
  • Q2. Design pattern followed by basic java questions
Round 2 - Technical 

(2 Questions)

  • Q1. Design patterns in java
  • Ans. 

    Design patterns in Java are reusable solutions to common problems in software design.

    • Design patterns help in creating flexible, maintainable, and scalable code.

    • Some common design patterns in Java include Singleton, Factory, Observer, and Strategy.

    • Each design pattern has its own purpose and can be applied in different scenarios.

    • Design patterns promote code reusability and help in organizing code in a structured manner.

  • Answered by AI
  • Q2. Database designing and java8

Skills evaluated in this interview

HackerRank Interview FAQs

How many rounds are there in HackerRank Backend Developer Intern interview?
HackerRank interview process usually has 1 rounds. The most common rounds in the HackerRank interview process are One-on-one Round.
What are the top questions asked in HackerRank Backend Developer Intern interview?

Some of the top questions asked at the HackerRank Backend Developer Intern interview -

  1. Why you want to join hackerr...read more
  2. What are your proje...read more

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Overall Interview Experience Rating

2/5

based on 1 interview experience

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