Walmart Interview Questions (2026)
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Walmart OA
Walmart Low Level Design Interview Questions
Question Details
Walmart has 3 rounds of interviews DSA, LLD, HLD. 2nd or 3rd round is LLD. In some cases there are two DSA rounds or DSA round + round with lots of small questions including LLD, springboot, concurrency, java etc. After you give a LLD solution HLD discussion also happen like database schema, scaling etc. For Software engineer 3 roles any given round it is more of LLD solution followed with some basic HLD discussion. It also includes concurrency, locking discussions. In LLD, clear explanation of design choices mattered more than just coding. --------------------------------------------------- Also for Walmart observer design pattern occurred most frequently (directly or indirectly) in LLD questions and in short discussions. So if you have good understanding of observer pattern(which is easy) then your chances improve. Not only they ask LLD problems but there may even be explicit discussion about common design patterns and how you will solve some sample use cases using those design patterns. Observer, Strategy, factory, command and singleton design pattern feature frequently in discussions. For example, a common discussion is how will you implement a notification system using observer or different payment methods in a payment gateway using strategy design pattern. This blog has some of the design patterns and how they are used to solve different usecases <a href="https://medium.com/@prashant558908/4-most-common-design-patterns-that-are-essential-to-solve-low-level-design-interview-questions-b7196c8c2b8by
Shopping Cart that uses an initial item catalog and lets a user add items by ID, view their cart, and checkout. It also enforces unknown item ID, insufficient stock, and empty-cart checkout. Practice Link: <a href="https://codezym.com/question/41y
Connection Pool that maintains a fixed number of reusable connection objects. Connections are indexed as integers: 0, 1, 2, ... capacity - 1. Clients requests a connection using a requestId. If a free connection exists, it is assigned immediately. If no free connection exists, the request is placed into an internal queue and will wait until a connection becomes free. The internal queue is
FIFO (first-come-first-serve): whenever a connection is released, it is immediately assigned to the oldest queued request. Practice Link: <a href="https://codezym.com/question/49y
Custom HashMap that stores String keys and String values. You must implement buckets, a custom hash, collision handling (multiple keys in the same bucket), and rehashing (resizing and redistributing entries). Goal of this problem is to force you to do a custom hashmap implementation, So don't use any inbuilt set/map/dictionary in your implementation. Practice Link: <a href="https://codezym.com/question/43.
Please upvote this post to give it better reach. Wish you the best of luck for your interview prep. ----------------------------------------
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Walmart Interview Process Overview
The Walmart interview process typically includes a recruiter screen, one to two technical phone screens, and a 4-6 round on-site or virtual on-site loop. Each round serves a distinct calibration purpose: coding rounds measure correctness, code quality, and complexity reasoning; system design rounds measure architectural judgment at the appropriate level; behavioral rounds measure ownership, leadership scope, and collaboration. Reports tagged on LeakCode from 2024-2026 show Walmart runs a calibrated process consistent with industry norms for companies of its tier.
Difficulty calibration: Walmart coding rounds typically run medium difficulty with follow-up depth as the senior discriminator. System design rounds expect production-grade trade-off articulation at L4+ levels. Behavioral rounds expect quantified outcomes ("reduced p99 latency from 800ms to 120ms") rather than vague impact claims. The candidates who advance consistently demonstrate clear thinking out loud rather than perfect final answers.
How To Use Walmart Question Reports
Real candidate-reported interview questions are a calibration tool, not a memorization target. Walmart updates its question pool every 2-4 months; memorizing exact problems risks misleading you when the interviewer uses a variant. The high-leverage approach: identify the patterns that appear repeatedly in Walmart reports, practice those patterns on similar (not identical) problems, and use the reports to understand the interviewer's typical follow-up depth.
Filter the questions above by round type, difficulty, and recency. Focus first on reports from the past 6-12 months; older reports may reference questions that have since rotated out of Walmart's pool. Reports tagged with quantified difficulty and explicit round type are higher-signal than reports without those tags. The metadata filters help you build a focused study plan in 1-2 hours rather than 8-10 hours of unstructured browsing.
Common Walmart Interview Mistakes
Reports tagged "no hire" at Walmart consistently surface a few patterns: jumping into code without clarifying requirements, coding silently for extended periods, missing edge cases (empty input, single element, large input, overflow), producing working code the candidate cannot refactor when probed, and behavioral stories that use "we" instead of "I" diluting individual signal. Strong candidates explicitly avoid these patterns by following a consistent round template.
The single most predictive failure mode in recent reports: not asking clarifying questions. Interviewers are explicitly trained to weight this dimension. Strong candidates ask 3-5 clarifying questions even on problems that look obvious; weak candidates dive into implementation immediately. Strong candidates also verbalize their approach before writing code; weak candidates code in silence and lose the communication dimension of the round's calibration.
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