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KeepTruckin Backend Software Engineer Interview Questions and Answers

Updated 14 Feb 2024

KeepTruckin Backend Software Engineer Interview Experiences

1 interview found

Interview experience
4
Good
Difficulty level
-
Process Duration
-
Result
-
Round 1 - One-on-one 

(1 Question)

  • Q1. What are the difficulties faced during your professional career

Interview Preparation Tips

Interview preparation tips for other job seekers - I applied through referral, within a week I got a call from HR.
1st round was with hiring manager, asked about previous work experience and about project.
Next 3 rounds was peer coding interview.
Focus was majorly on data structures and algorithms. Asked easy to medium questions from leetcode

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I appeared for an interview before Sep 2020.

Round 1 - Face to Face 

(2 Questions)

Round duration - 60 Minutes
Round difficulty - Easy

  • Q1. 

    0/1 Knapsack Problem Statement

    A thief is planning to rob a store and can carry a maximum weight of 'W' in his knapsack. The store contains 'N' items where the ith item has a weight of 'wi' and a value of...

  • Ans. 

    Yes, the 0/1 Knapsack problem can be solved using dynamic programming with a space complexity of not more than O(W).

    • Use a 1D array to store the maximum value that can be stolen for each weight capacity from 0 to W.

    • Iterate through each item and update the array based on whether including the item would increase the total value.

    • The final value in the array at index W will be the maximum value that can be stolen.

  • Answered by AI
  • Q2. 

    Find the Second Largest Element

    Given an array or list of integers 'ARR', identify the second largest element in 'ARR'.

    If a second largest element does not exist, return -1.

    Example:

    Input:
    ARR = [2,...
  • Ans. 

    Find the second largest element in an array of integers.

    • Iterate through the array to find the largest and second largest elements.

    • Handle cases where all elements are identical.

    • Return -1 if a second largest element does not exist.

  • Answered by AI
Round 2 - Video Call 

(1 Question)

Round duration - 60 Minutes
Round difficulty - Easy

System Design Round

  • Q1. Design a system for Twitter, discussing its architecture, key components, and scalability considerations.
  • Ans. 

    Design a scalable system for Twitter with key components and architecture.

    • Use microservices architecture for scalability and fault isolation.

    • Key components include user service, tweet service, timeline service, and notification service.

    • Use a distributed database like Cassandra for storing tweets and user data.

    • Implement a message queue like Kafka for handling real-time updates and notifications.

    • Use a caching layer like ...

  • Answered by AI
Round 3 - HR 

Round duration - 30 Minutes
Round difficulty - Easy

It is just a formality

Interview Preparation Tips

Professional and academic backgroundI applied for the job as SDE - 1 in BangaloreEligibility criteriaResume shortlistingSwiggy interview preparation:Topics to prepare for the interview - OOPS, Data Structures, Core Java, Algorithms, DBMS, SQL,Time required to prepare for the interview - 3 monthsInterview preparation tips for other job seekers

Tip 1 : System Design
Tip 2 : Practice questions from leetcode
Tip 3 : Have some projects.

Application resume tips for other job seekers

Tip 1 : Mention what you know 
Tip 2 : Good previous work to showcase

Final outcome of the interviewSelected

Skills evaluated in this interview

I appeared for an interview before Apr 2021.

Round 1 - Telephonic Call 

(2 Questions)

Round duration - 45 Minutes
Round difficulty - Medium

It was in the mid day and since I applied for a Frontend role the discussion was majorly around data structure and bit of Javascript.
The interviewer was helping and good listener.

  • Q1. 

    Merge Two Sorted Linked Lists Problem Statement

    You are provided with two sorted linked lists. Your task is to merge them into a single sorted linked list and return the head of the combined linked list.

    ...
  • Ans. 

    Merge two sorted linked lists into a single sorted linked list without using additional space.

    • Create a dummy node to start the merged list

    • Compare the values of the two linked lists and add the smaller value to the merged list

    • Move the pointer of the merged list and the pointer of the smaller value list

    • Continue this process until one of the lists is fully traversed

    • Append the remaining elements of the other list to the me

  • Answered by AI
  • Q2. 

    Sort 0 1 2 Problem Statement

    Given an integer array arr of size 'N' containing only 0s, 1s, and 2s, write an algorithm to sort the array.

    Input:

    The first line contains an integer 'T' representing the n...
  • Ans. 

    Sort an array of 0s, 1s, and 2s in linear time complexity.

    • Use three pointers to keep track of 0s, 1s, and 2s while traversing the array.

    • Swap elements based on the values encountered to sort the array in-place.

    • Time complexity should be O(N) and space complexity should be O(1).

  • Answered by AI
Round 2 - Face to Face 

(3 Questions)

Round duration - 60 Minutes
Round difficulty - Medium

It was more of a in depth round on the framework I'm working on and problem solving.

  • Q1. What is the event loop and what is its significance?
  • Ans. 

    The event loop is a mechanism in programming that allows for asynchronous execution of code.

    • The event loop is a key component in JavaScript's runtime environment, responsible for handling asynchronous operations.

    • It continuously checks the call stack for any pending tasks and executes them in a non-blocking manner.

    • The event loop ensures that the program remains responsive by allowing other code to run while waiting for ...

  • Answered by AI
  • Q2. Can you provide examples of output-based questions in JavaScript that utilize browser APIs?
  • Ans. 

    Output-based questions in JavaScript using browser APIs

    • Example 1: Write a script that uses the Geolocation API to display the user's current location on a map

    • Example 2: Create a program that uses the Web Audio API to play a sound when a button is clicked

    • Example 3: Develop a web page that uses the Canvas API to draw a simple animation

  • Answered by AI
  • Q3. How would you design a system to support localization in a mobile app?
  • Ans. 

    Designing a system to support localization in a mobile app

    • Use resource files to store localized strings for different languages

    • Implement a language selection feature for users to choose their preferred language

    • Utilize localization libraries or frameworks to streamline the process

    • Consider cultural differences when localizing content, such as date formats and currency symbols

  • Answered by AI
Round 3 - Face to Face 

(3 Questions)

Round duration - 75 Minutes
Round difficulty - Hard

It was more of a fitment/managerial round.
Didn't had any coding questions, but was asked more on approaches and optimisations.
Discussions on the project you have worked on.

  • Q1. You need to find the fastest 3 horses out of a group, given that you can only race 5 horses at a time. How would you approach this problem?
  • Ans. 

    To find the fastest 3 horses out of a group with 5 horses racing at a time, we can use a tournament style approach.

    • Divide the horses into groups of 5 and race them against each other. This will give you the fastest horse in each group.

    • Take the winners from each group and race them against each other. The top 3 horses in this final race will be the fastest 3 overall.

    • Keep track of the results and compare the timings to d

  • Answered by AI
  • Q2. How do you debug the root cause of lag on a screen?
  • Ans. 

    To debug lag on a screen, analyze code, check for memory leaks, optimize rendering, and use profiling tools.

    • Analyze code to identify any inefficient algorithms or operations causing lag.

    • Check for memory leaks that could be impacting performance.

    • Optimize rendering by reducing the number of draw calls, optimizing shaders, and minimizing overdraw.

    • Use profiling tools like Xcode Instruments or Android Profiler to identify p

  • Answered by AI
  • Q3. Can you explain the architecture of the app you have recently worked on?
  • Ans. 

    The app I recently worked on is a social media platform for sharing photos and connecting with friends.

    • The app follows a client-server architecture, with the client being the mobile app and the server handling data storage and processing.

    • The client side is built using React Native for cross-platform compatibility.

    • The server side is implemented using Node.js with a MongoDB database for storing user data and photos.

    • The a...

  • Answered by AI

Interview Preparation Tips

Professional and academic backgroundI applied for the job as SDE - 1 in GurgaonEligibility criteriaNo criteriaCars24 interview preparation:Topics to prepare for the interview - Data Structures Algorithms, Javascript, System DesignTime required to prepare for the interview - 1 MonthInterview preparation tips for other job seekers

Tip 1 : Get your JS fundamentals right (if applying for a Frontend role, https://javascript.info/ is a good start)
Tip 2 : Apart from preparing data structures, practise on the communication skills as well (prepare your introduction, be a good listener and on spot improvisation plays key roles)

Application resume tips for other job seekers

Tip 1 : highlight projects related to the job profile in your resume and mention what was your contribution in them precisely in 1/2 lines.
Tip 2 : Include URLs to applications/projects that you have build and your achievements/blog (if any)

Final outcome of the interviewSelected

Skills evaluated in this interview

Interview experience
3
Average
Difficulty level
-
Process Duration
-
Result
Not Selected
Round 1 - Coding Test 

Questions were crayon box ,the bot and the game and happy neighbourhood for 90 mins

Round 2 - Technical 

(2 Questions)

  • Q1. Array basics was asked
  • Q2. Segment tree,prefix sum
Round 3 - Technical 

(1 Question)

  • Q1. Low level design was asked
Interview experience
5
Excellent
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Technical 

(2 Questions)

  • Q1. Stock buy and sell with at most 2 transaction
  • Ans. 

    Implement a solution to find the maximum profit from buying and selling stocks with at most 2 transactions.

    • Use dynamic programming to keep track of maximum profit at each day with 0, 1, or 2 transactions.

    • Consider the possibility of splitting the transactions into two separate parts.

    • Calculate the maximum profit by iterating through the prices array and updating the maximum profit accordingly.

  • Answered by AI
  • Q2. Binary search to find target
  • Ans. 

    Binary search is a divide and conquer algorithm that efficiently finds a target value in a sorted array.

    • Divide the array in half and compare the target value with the middle element

    • If the target is less than the middle element, search the left half. If greater, search the right half

    • Repeat the process until the target is found or the subarray is empty

  • Answered by AI
Round 2 - System Design 

(2 Questions)

  • Q1. General about project
  • Q2. Design paytm wallet
  • Ans. 

    Design a digital wallet system similar to Paytm.

    • Allow users to add money to their wallet using various payment methods like credit/debit cards, net banking, UPI, etc.

    • Enable users to make payments for various services like mobile recharge, bill payments, online shopping, etc.

    • Implement security measures like two-factor authentication, encryption of sensitive data, and regular security audits.

    • Provide features like transac...

  • Answered by AI

Skills evaluated in this interview

Interview experience
4
Good
Difficulty level
-
Process Duration
-
Result
-
Round 1 - HR 

(2 Questions)

  • Q1. What is thread ?
  • Ans. 

    A thread is a lightweight process that can run concurrently with other threads within the same process.

    • Threads allow for parallel execution of tasks within a single process.

    • Threads share the same memory space and resources of the process they belong to.

    • Threads can communicate with each other through shared memory or message passing.

    • Examples: Java threads, POSIX threads (pthreads) in C/C++.

  • Answered by AI
  • Q2. Inter process communication and project?

Skills evaluated in this interview

Interview experience
4
Good
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
No response

I applied via Referral and was interviewed in Aug 2024. There was 1 interview round.

Round 1 - Coding Test 

I was asked question on sliding window on finding the largest subarray with all distinct numbers. The interviewer was very helpful.

Interview experience
2
Poor
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
No response

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

Round 1 - Technical 

(1 Question)

  • Q1. Create pagination component using an api show the data for the pages
  • Ans. 

    Create a pagination component using an API to display data for different pages.

    • Use API to fetch data for each page

    • Implement pagination logic to display data for each page

    • Allow users to navigate between pages

  • Answered by AI

Skills evaluated in this interview

Interview experience
4
Good
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Coding Test 

Majorily on SQL and Databases

Round 2 - Technical 

(2 Questions)

  • Q1. Align two images in a page with same width and same height
  • Ans. 

    Use CSS to align two images with same width and height on a page

    • Set both images to have the same width and height using CSS

    • Use flexbox or grid layout to align the images horizontally or vertically

    • Adjust margins or padding to fine-tune the alignment

  • Answered by AI
  • Q2. Array related question
Round 3 - HR 

(2 Questions)

  • Q1. Situation based question
  • Q2. Majorily focused on project

Skills evaluated in this interview

Interview experience
4
Good
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Technical 

(4 Questions)

  • Q1. Explain Deadlock?
  • Q2. Explain Red Black Tree?
  • Q3. Find local minima in a 1-D array?
  • Q4. Find local minima in 2-D array?

KeepTruckin Interview FAQs

How many rounds are there in KeepTruckin Backend Software Engineer interview?
KeepTruckin interview process usually has 1 rounds. The most common rounds in the KeepTruckin interview process are One-on-one Round.
How to prepare for KeepTruckin Backend Software Engineer interview?
Go through your CV in detail and study all the technologies mentioned in your CV. Prepare at least two technologies or languages in depth if you are appearing for a technical interview at KeepTruckin. The most common topics and skills that interviewers at KeepTruckin expect are Backend, Debugging, Logistics, NoSQL and Postgresql.

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KeepTruckin Backend Software Engineer Interview Process

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Interview experience

4
  
Good
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Software Engineer Backend

Bangalore / Bengaluru

2-4 Yrs

Not Disclosed

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