Walmart interview experience Real time questions & tips from candidates to crack your interview
Senior Software Engineer
Walmart
4 rounds | 4 Coding
problems
Selected Interview preparation journey
Preparation
Duration: 3 Months
Topics: DataStructures, System Design, Design Patterns, Algorithms , Microservices patterns
Tip 1 : Focus on System design (HLD) extensively if you are applying to SSE
Tip 2 : Focus on Microservices patterns like rate limiting, distributed DB transactions ,circuit breaker etc
Application process
Where: Linkedin
Eligibility: Should have good count of enterprise level development projects
Tip 1 : Keep it short and simple
Tip 2 : Highlight your projects and skills
Interview rounds
01
Round
Medium
Video Call
Duration60 minutes
Interview date6 Apr 2022
Coding problem1
1. First Missing Positive
Moderate
18m average time
84% success
0/80
Asked in companies
You are given an array 'ARR' of integers of length N. Your task is to find the first missing positive integer in linear time and constant space. In other words, find the lowest positive integer that does not exist in the array. The array can have negative numbers as well.
For example, the input [3, 4, -1, 1] should give output 2 because it is the smallest positive number that is missing in the input array.
Problem approach
1.) First i applied sorting and then iterating over array and find first missing number.
2.) Interviewer asked for optimisation.
3.) I used Hashset to solve this then.
02
Round
Easy
Video Call
Duration60 minutes
Interview date11 Apr 2022
Coding problem1
1. System Design Question
Design a multi level parking system(LLD)
Problem approach
Tip 1 : Keep focus on using design patterns.
Tip 2 : Keep OOPS principles in mind while designing classes
Tip 3 : Ask clarifying questions in initial phase of discussion
03
Round
Easy
Video Call
Duration60 minutes
Interview date13 Apr 2022
Coding problem1
1. System Design Question
Design a Stock Broker system(HLD)
Problem approach
Tip 1 : Have a clear understanding of different databases, caching mechanisms and other design concepts.
Tip 2 : Ask clarifying questions whenever possible
Tip 3 : Keep your conversation two way.
04
Round
Easy
Video Call
Duration40 minutes
Interview date20 Apr 2022
Coding problem1
1. Project based question
It was a managerial round and focus was on my projects and microservice patterns
Problem approach
Tip 1 : Should have a deep understanding of current project
Tip 2 : Read concepts of microservice design.
Here's your problem of the day 
Solving this problem will increase your chance to get selected in this company
Skill covered: Programming
Which keyword is used for inheritance?
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