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Walmart Software Development Engineer 2 Interview Experience

Software Development Engineer 2

Walmart
June 13, 2025
17 Questions
Selected

Summary

AI Powered

The Walmart interview process was thorough and involved three rounds, covering a range of topics from coding challenges in the first round to behavioral and conceptual questions in the subsequent rounds. Candidates can expect to face programming questions such as reversing a linked list and detecting cycles, alongside discussions on React optimization and project experiences. Overall, the interview was moderately challenging and aimed at assessing both technical knowledge and personal experiences relevant to web development.

1

Round 1

#1

Maximum Sum Path in a Matrix

Given a matrix, find the maximum sum path from top-left to bottom-right. You can only move right or down at any point in time. For example, given the matrix [[1, 2, 3], [4, 5, 6]], the maximum sum path is 1 → 2 → 5 → 6 = 14.
dynamic-programming
matrix
pathfinding
Medium
Maximum Sum Path in a Matrix

Link to problem description and solution

#2

Reverse Linked List

Write a function to reverse a singly linked list. The function should take the head of the list as input and return the new head after reversal. For example, given the list 1 -> 2 -> 3 -> NULL, it should return 3 -> 2 -> 1 -> NULL.
linked-list
data-structures
Medium
#3

Detect Cycle in Linked List

Implement an algorithm to detect a cycle in a linked list. You can use Floyd’s Tortoise and Hare algorithm for this purpose. If a cycle exists, return true; otherwise, return false.
linked-list
algorithms
Medium
2

Round 2

#1

Project Discussion

Discuss your most recent project in detail, focusing on your role and the technologies used. Explain any challenges faced and how you addressed them.
project-management
web-development
Medium
#2

Optimizing React Application

What strategies would you employ to optimize a React application? Mention techniques such as avoiding unnecessary renders, code splitting, and leveraging memoization.
react
optimization
Medium
#3

UseMemo in React

Explain a real-life use case where you would apply the useMemo hook in a React application. Provide an example that shows its effect on performance.
react
performance
Medium
#4

Creating a Custom Hook

Describe how you would create a custom hook in React. What benefits does it offer, and when might you choose to use a custom hook over traditional components?
react
custom-hooks
Medium
#5

Context API vs Redux

Compare the Context API with Redux. In which scenarios would you prefer one over the other for state management in a React application?
react
state-management
Medium
#6

Timer Application Requirements

Design a timer application that allows users to add multiple timers. The application should enable users to start, stop, pause, and delete timers. Outline the necessary components and how they would interact.
react
application-design
Medium
3

Round 3

#1

Reason for Leaving

Why are you considering leaving your current position? What factors are influencing your decision?
behavioral
career-transition
Easy
#2

Most Challenging Work Experience

What has been the most challenging project or task you have ever worked on? Discuss how you overcame the challenges involved.
behavioral
challenges
Medium
#3

New Explorations in Web Domain

What new technologies or practices are you currently exploring in the web development domain? How do you plan to apply them in your work?
web-development
trends
Medium
#4

Current Project Discussion

What project are you currently working on? Explain your responsibilities and the technologies you are applying.
project-management
web-development
Medium
#5

Placement of Hooks in React

Why should hooks not be defined inside conditional statements like if? Explain the implications this has on component behavior.
react
hooks
Medium
#6

Feedback from 1:1 Meetings

What kind of feedback have you received in 1:1 meetings with your manager and colleagues? How did you apply this feedback in your work?
behavioral
feedback
Medium
#7

Throttling and Debouncing Concepts

Explain the concepts of throttling and debouncing in JavaScript. Provide examples of their usage in web applications.
javascript
performance
Medium
#8

Binary Search Tree Check

Write an algorithm to check if a given binary tree is a binary search tree (BST). Discuss the necessary properties of a BST that must be validated.
binary-tree
algorithms
Medium
dslinked-listreactweb-developmentoptimizationwalmart
A

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