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Chalo Backend Software Engineer Interview Questions and Answers
Chalo Backend Software Engineer Interview Experiences
1 interview found
Anonymous
I applied via Instahyre and was interviewed in Jan 2024. There was 1 interview round.
The interviewer first asked me a puzzle and then asked me two DSA questions.
Puzzle: There are a large number of people sitting in a circular table with numbering as 1,2,3..
Given two numbers a and b, how to find out whether they are sitting opposite to each other or not.
DSA 1: Finding out the minimum capacity required to load the ship with all the weights given in an array in d days. (Binary Search approach)
DSA2: Given an array containing information about parents of a node in a tree, and q queries. Each query would contain the node number and a value n. You have to find the nth parent for the given node. You have to do this in such a way that the time complexity is less than linear and the memory usage is also minimal.
This was a tricky question where I was unable to give a logarithmic solution initially but with some hints from the interviewer, I was able to approach it.
Interview Preparation Tips
For DSA, be prepared with the standard DSA questions of every topic and whether or not you have solved the question earlier does not matter. Just be confident and look for solvong the question step by step.
Top trending discussions
Interview questions from similar companies
I applied via Recruitment Consultant and was interviewed in Aug 2019. There were 5 interview rounds.
Interview Questionnaire
1 Question
- Q1. Basic Questions only, Oops concept, Android basic questions, work manager related, MVVM pattern, why kotlin?
Interview Preparation Tips
Interview Questionnaire
2 Questions
- Q1. Design Facebook
- Ans.
Designing Facebook involves creating a social networking platform with features like user profiles, news feed, messaging, and more.
Create a user registration and login system
Develop a news feed algorithm to display relevant content
Implement a messaging system for users to communicate
Design a user profile page with customizable options
Incorporate features like groups, events, and pages
Ensure scalability and security of
- Q2. Reverse the linked list
- Ans.
Reverse a linked list
Iterative approach using three pointers
Recursive approach with base case and recursive call
In-place reversal using stack
Interview Preparation Tips
Skills evaluated in this interview
Selected
I applied via Approached by Company and was interviewed before May 2022. There were 2 interview rounds.
(2 Questions)
- Q1. How can we improve the performance of a Front End System
- Ans.
Improving Front End System Performance
Optimize images and reduce their size
Minimize HTTP requests and use caching
Use lazy loading for images and videos
Reduce the number of DOM elements
Use a Content Delivery Network (CDN)
Minimize the use of external scripts and plugins
Use asynchronous loading for scripts
Optimize CSS and JavaScript files
Use browser caching
Implement server-side rendering
- Q2. What is Event Loop and give an example on how it works.
- Ans.
Event Loop is a mechanism that allows JavaScript to handle multiple tasks simultaneously.
Event Loop is a part of JavaScript runtime that continuously checks the call stack and the task queue.
It prioritizes the tasks in the queue and pushes them to the call stack when it's empty.
This allows JavaScript to handle I/O operations and other asynchronous tasks without blocking the main thread.
Example: setTimeout() function ad...
Interview Preparation Tips
Skills evaluated in this interview
Selected
I applied via LinkedIn and was interviewed before Feb 2023. There were 2 interview rounds.
- simple basic ios questions
(1 Question)
- Q1. Asked DSA array questions
Interview Preparation Tips
Selected
I applied via Campus Placement and was interviewed before Mar 2023. There were 3 interview rounds.
Kadance algorithm and find the middle of the linklist
More on java and Python based coding questions
(4 Questions)
- Q1. Behavioural questions were asked
- Q2. What are your expectations from this job
- Q3. What are your plans ahead
- Q4. Where do you see yourself in 5 years ahead
Interview Preparation Tips
Selected
I applied via Referral and was interviewed before Apr 2023. There were 3 interview rounds.
(2 Questions)
- Q1. 2 question on Data structure and algorithms (easy-medium and medium level questions)
- Q2. Related to array and matrix
(2 Questions)
- Q1. This also contained discussion on last company project and some basic question regarding different tech stack used. Then asked 2 questions on Data structure and algorithms (both medium level questions)
- Q2. Related to stack and linked list
(2 Questions)
- Q1. This was the Hiring Manager round. He asked different questions related to general programming like - Rest, Http, Websockets, TCP. Asked some questions from past company projects. Then asked one easy-mediu...
- Q2. Programming and Math related topics
Interview Preparation Tips
- Data Structures
- Algorithms
- Programming
- Operating Systems
Selected
(1 Question)
- Q1. 2 DSA leetcode (1 medium , 1 hard)
(1 Question)
- Q1. Same round 1 2 DSA leetcode questions (1 hard , 1 medium)
(1 Question)
- Q1. It was the hiring manager round, it started with the LRU cache algorithm and went deep in the system design
Selected
I applied via LinkedIn and was interviewed before May 2023. There were 3 interview rounds.
1 questions of leetcode medium level + project discussion
1 puzzle solving round
(2 Questions)
- Q1. Questions about the project
- Q2. Describe your strength and weakness
Interview Preparation Tips
Akash Das
Selected
I applied via Referral and was interviewed in Apr 2024. There were 5 interview rounds.
2 dsa questions of easy/medium
(1 Question)
- Q1. Asked two dsa questions of leetcodeeasy/medium
(1 Question)
- Q1. Asked two dsa questions of leetcode easy/medium
(1 Question)
- Q1. Asked one dsa question on tree and discussion on resume and dbms os
(1 Question)
- Q1. Salary Discussion
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Chalo Backend Software Engineer Interview Process
based on 1 interview
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