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Walmart Labs Software Engineer III Interview Questions, Process, and Tips

Updated 17 Dec 2024

Top Walmart Labs Software Engineer III Interview Questions and Answers

  • Q1. What are the key components of frontend system design?
  • Q2. Use two thread two print From 1 to 10 where Thread A will be for odd and Thread B will be for even.
  • Q3. What are the basics of JavaScript and ES6 modules?
View all 7 questions

Walmart Labs Software Engineer III Interview Experiences

5 interviews found

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

(2 Questions)

  • Q1. Array based question
  • Q2. DP based question
Round 2 - Technical 

(2 Questions)

  • Q1. Internal implementation of HashMap
  • Ans. 

    HashMap is implemented using an array of linked lists to store key-value pairs.

    • HashMap consists of an array of buckets, each containing a linked list of key-value pairs.

    • Hashing function is used to determine the index of the bucket where a key-value pair will be stored.

    • Collision resolution techniques like chaining or open addressing are used to handle collisions.

    • HashMap allows null keys and values, but only one null key

  • Answered by AI
  • Q2. In depth javascript concepts
Round 3 - Behavioral 

(2 Questions)

  • Q1. Project based discussion
  • Q2. Design for a date picker in javascript
  • Ans. 

    A date picker in JavaScript allows users to select a date from a calendar interface.

    • Use HTML input element with type 'date' for modern browsers

    • For older browsers, use a JavaScript library like jQuery UI Datepicker

    • Implement validation to ensure selected date is within acceptable range

  • Answered by AI

Skills evaluated in this interview

Software Engineer III Interview Questions & Answers

user image PRATYUSH PATWA

posted on 22 Jul 2024

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

(2 Questions)

  • Q1. Implement Stack using Queue.
  • Ans. 

    Implement a stack using a queue data structure.

    • Use two queues to simulate a stack.

    • Push operation: Enqueue the element to queue 1.

    • Pop operation: Dequeue all elements from queue 1 to queue 2, dequeue the last element from queue 2.

    • Top operation: Return the front element of queue 1.

    • Empty operation: Check if both queues are empty.

  • Answered by AI
  • Q2. Use two thread two print From 1 to 10 where Thread A will be for odd and Thread B will be for even.
  • Ans. 

    Use two threads to print numbers 1 to 10, with Thread A printing odd numbers and Thread B printing even numbers.

    • Create two threads, one for odd numbers and one for even numbers

    • Use a shared variable to keep track of the current number being printed

    • Use synchronization mechanisms like mutex or semaphore to ensure proper sequencing of numbers

  • Answered by AI

Skills evaluated in this interview

Software Engineer III Interview Questions Asked at Other Companies

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asked in Walmart
Q5. Given a tree and a node, print all ancestors of Node
Interview experience
4
Good
Difficulty level
Moderate
Process Duration
6-8 weeks
Result
Selected Selected

I applied via Referral and was interviewed before Dec 2023. There were 5 interview rounds.

Round 1 - Technical 

(1 Question)

  • Q1. What are the basics of JavaScript and ES6 modules?
  • Ans. 

    JavaScript is a popular programming language used for web development. ES6 modules are a way to organize and reuse code in JavaScript.

    • JavaScript is a high-level, interpreted programming language commonly used for client-side web development.

    • ES6 modules allow developers to split their code into separate files and import/export functions, variables, and classes between them.

    • ES6 introduced 'import' and 'export' keywords f...

  • Answered by AI
Round 2 - Coding Test 

Provide additional information regarding CSS, HTML coding, and the coding scenario in React.

Round 3 - Technical 

(1 Question)

  • Q1. What are the key components of frontend system design?
  • Ans. 

    Key components of frontend system design include user interface, data management, state management, and performance optimization.

    • User Interface: Designing the layout, navigation, and visual elements of the frontend.

    • Data Management: Handling data fetching, storage, and manipulation within the frontend.

    • State Management: Managing the state of the application to ensure data consistency and reactivity.

    • Performance Optimizati...

  • Answered by AI
Round 4 - One-on-one 

(1 Question)

  • Q1. What projects have you worked on, and can you discuss your contributions to them?
  • Ans. 

    I have worked on various projects including a mobile app for tracking fitness goals and a web application for managing inventory.

    • Developed a mobile app using React Native to track fitness goals and provide workout plans.

    • Contributed to a web application built with Angular for managing inventory and tracking sales.

    • Implemented RESTful APIs for communication between front-end and back-end systems.

    • Collaborated with cross-fu...

  • Answered by AI
Round 5 - HR 

(1 Question)

  • Q1. Salary discussion and personal discussion
Interview experience
4
Good
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Selected Selected

I applied via Recruitment Consulltant and was interviewed before Oct 2022. There were 3 interview rounds.

Round 1 - One-on-one 

(1 Question)

  • Q1. Sort 0 1 2 array binary tree left view
  • Ans. 

    Sort an array of 0s, 1s, and 2s and find the left view of a binary tree.

    • To sort the array of 0s, 1s, and 2s, you can use the Dutch National Flag algorithm which sorts the array in a single pass.

    • To find the left view of a binary tree, perform a level order traversal and keep track of the first node at each level.

  • Answered by AI
Round 2 - One-on-one 

(1 Question)

  • Q1. Questions on java garbage collector
Round 3 - One-on-one 

(1 Question)

  • Q1. Manager and behavioral round

Skills evaluated in this interview

Walmart Labs interview questions for designations

 Software Engineer

 (12)

 Software Engineer II

 (1)

 Lead Software Engineer

 (1)

 Senior Software Engineer

 (1)

 Software Development Engineer

 (1)

 Software Developer

 (4)

 Software Engineer2

 (1)

 Software Developer Intern

 (1)

Interview experience
3
Average
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Selected Selected

I applied via Instahyre and was interviewed before Jun 2023. There was 1 interview round.

Round 1 - Coding Test 

Given an array containing only numbers 0,1,2, arrange all 0s,1s and 2s together without using sorting technique.
It can be solved using flag problem

Get interview-ready with Top Walmart Labs Interview Questions

Interview questions from similar companies

I applied via Recruitment Consultant and was interviewed before Jul 2020. There was 1 interview round.

Interview Questionnaire 

1 Question

  • Q1. DS Algo Questions on Trees. Leadership Principles

Interview Preparation Tips

Interview preparation tips for other job seekers - Read up on DS Algo and white paper coding and Leadership Principles

I applied via Newspaper Ad and was interviewed before Jun 2021. There were 3 interview rounds.

Round 1 - Aptitude Test 
Round 2 - Technical 

(1 Question)

  • Q1. Basic questions of java.
Round 3 - HR 

(1 Question)

  • Q1. Intro and other hr related questions.

Interview Preparation Tips

Interview preparation tips for other job seekers - Cover the basic questions regarding the programming language.

I appeared for an interview in Aug 2017.

Interview Questionnaire 

7 Questions

  • Q1. Implement Merge Sort.
  • Ans. 

    Merge Sort is a divide and conquer algorithm that sorts an array by dividing it into two halves, sorting them separately, and then merging the sorted halves.

    • Divide the array into two halves

    • Recursively sort the two halves

    • Merge the sorted halves

  • Answered by AI
  • Q2. Given a BST containing distinct integers, and a number ‘X’, find all pairs of integers in the BST whose sum is equal to ‘X’.
  • Ans. 

    Find pairs of integers in a BST whose sum is equal to a given number.

    • Traverse the BST and store the values in a hash set.

    • For each node, check if (X - node.value) exists in the hash set.

    • If yes, add the pair (node.value, X - node.value) to the result.

    • Continue traversal until all nodes are processed.

  • Answered by AI
  • Q3. Given a set of time intervals in any order, merge all overlapping intervals into one and output the result which should have only mutually exclusive intervals.
  • Ans. 

    Merge overlapping time intervals into mutually exclusive intervals.

    • Sort the intervals based on their start time.

    • Iterate through the intervals and merge overlapping intervals.

    • Output the mutually exclusive intervals.

    • Example: [(1,3), (2,6), (8,10), (15,18)] -> [(1,6), (8,10), (15,18)]

  • Answered by AI
  • Q4. What are the different types of hashing? Suggest an alternative and a better way for Linear Chaining.
  • Ans. 

    Different types of hashing and alternative for Linear Chaining

    • Different types of hashing include division, multiplication, and universal hashing

    • Alternative for Linear Chaining is Open Addressing

    • Open Addressing includes Linear Probing, Quadratic Probing, and Double Hashing

  • Answered by AI
  • Q5. Implement AVL Tree.
  • Ans. 

    An AVL tree is a self-balancing binary search tree where the heights of the left and right subtrees differ by at most one.

    • AVL tree is a binary search tree with additional balance factor for each node.

    • The balance factor is the difference between the heights of the left and right subtrees.

    • Insertion and deletion operations in AVL tree maintain the balance factor to ensure the tree remains balanced.

    • Rotations are performed ...

  • Answered by AI
  • Q6. Minimum number of squares whose sum equals to given number n.
  • Ans. 

    Find the minimum number of squares whose sum equals to a given number n.

    • Use dynamic programming to solve the problem efficiently.

    • Start with finding the square root of n and check if it is a perfect square.

    • If not, then try to find the minimum number of squares required for the remaining number.

    • Repeat the process until the remaining number becomes 0.

    • Return the minimum number of squares required for the given number n.

  • Answered by AI
  • Q7. Insertion sort for a singly linked list.
  • Ans. 

    Insertion sort for a singly linked list.

    • Traverse the list and compare each node with the previous nodes

    • If the current node is smaller, swap it with the previous node

    • Repeat until the end of the list is reached

    • Time complexity is O(n^2)

  • Answered by AI

Interview Preparation Tips

Round: Test
Experience: There were 2 coding questions (no penalty for wrong submission) and 20 Multiple Choice Questions(with negative marking). We were given 90 minutes to solve them. MCQs were based on Data Structures, OS, CN, C outputs, OOP etc.
Tips: Experience in Competitive Programming might help in solving coding questions. No constraints were mentioned and detailed Instructions related to problem were stated vaguely. So code carefully.
Duration: 1 hour 30 minutes
Total Questions: 22

Round: Technical Interview
Experience: The interviewer asked me to introduce myself and a brief introduction of the projects that I have done. She first asked me questions related to my project. After that she moved on to the data structures part.
Tips: Take your time to approach the problems and if the question is not clear ask the interviewer to explain it again.

Round: Technical Interview
Experience: The interviewer asked me about how my previous round went. After that, he asked me to introduce myself and a brief introduction of the projects that I have done. He first asked me a few questions related to my project. Then he moved on to the data structures part. In this round the interviewer gave me strict time limit for coding the solution on paper for each problem and as soon as I was done coding he gave me 2-3 minutes every time to find errors and debug my code.
Tips: Do not panic even if the interviewer sets time limit while solving problems. If the question is not clear ask the interviewer to explain it again.

College Name: The LNM Institute Of Information Technology, Jaipur

Skills evaluated in this interview

I applied via Walk-in and was interviewed before Jul 2021. There was 1 interview round.

Round 1 - Technical 

(1 Question)

  • Q1. .net questions - routing in asp.net MVC ?

Interview Preparation Tips

Interview preparation tips for other job seekers - Nothing . Prepare well for interview on .Net technology stack

I appeared for an interview before Jun 2016.

Interview Questionnaire 

4 Questions

  • Q1. Tell me something about yourself
  • Ans. 

    I am a passionate software developer with 5 years of experience in web development and a strong background in computer science.

    • 5 years of experience in web development

    • Strong background in computer science

    • Passionate about software development

  • Answered by AI
  • Q2. Questions related to project I have worked on during college days
  • Q3. Core Java concepts
  • Q4. Why do you use two mobile numbers
  • Ans. 

    To separate personal and professional calls, and to ensure availability and accessibility.

    • Separate personal and professional calls

    • Ensure availability and accessibility

    • Maintain work-life balance

    • Avoid mixing personal and work-related contacts

  • Answered by AI

Interview Preparation Tips

Round: Test
Total Questions: 60

College Name: Watumull Institute Of Electronics Engineering And Computer Technology ( WIEECT )

Walmart Labs Interview FAQs

How many rounds are there in Walmart Labs Software Engineer III interview?
Walmart Labs interview process usually has 2-3 rounds. The most common rounds in the Walmart Labs interview process are Technical, One-on-one Round and Coding Test.
How to prepare for Walmart Labs Software Engineer III 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 Walmart Labs. The most common topics and skills that interviewers at Walmart Labs expect are Information Technology, Monitoring, Networking, Retail and Coding.
What are the top questions asked in Walmart Labs Software Engineer III interview?

Some of the top questions asked at the Walmart Labs Software Engineer III interview -

  1. What are the key components of frontend system desi...read more
  2. Use two thread two print From 1 to 10 where Thread A will be for odd and Thread...read more
  3. What are the basics of JavaScript and ES6 modul...read more

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Walmart Labs Software Engineer III Interview Process

based on 5 interviews

1 Interview rounds

  • Technical Round
View more

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Walmart Labs Software Engineer III Salary
based on 13 salaries
₹15.7 L/yr - ₹36 L/yr
6% more than the average Software Engineer III Salary in India
View more details

Walmart Labs Software Engineer III Reviews and Ratings

based on 7 reviews

3.6/5

Rating in categories

3.5

Skill development

2.5

Work-life balance

3.2

Salary

4.2

Job security

3.3

Company culture

2.7

Promotions

3.2

Work satisfaction

Explore 7 Reviews and Ratings
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