← Back to Directory

Walmart interview notes, page 7 of 14

Large Enterprises

Most of these Walmart write-ups come from Software Engineers (91), then Product Managers (21) and Data Scientists (13). The most reported rounds are the technical phone screen (47), the hiring manager screen (23), the product sense round (16) and the system design round (13).

139 interview notes · updated Oct 2026

Walmart·Software Engineer·Online Assessment (OA)

May 2026
Walmart SWE online assessment, one algorithmic problem about selecting ML models to satisfy feature coverage requirements at minimum cost. The problem looked like a greedy/DP hybrid and took me longer than I'd like to admit to even parse correctly.
  • You have n ML models, each with a cost and a binary string indicating whether it supports Feature A, Feature B, both, or neither. For each k from 1 to n, find the minimum total cost to select a set of models that includes at least k supporters of Feature A and at least k supporters of Feature B. A model supporting both counts toward either requirement. Return -1 if a given k is impossible.

“Spent the first ten minutes just re-reading the problem because the dual-counting on '11' models kept tripping me up.”

View Post

Walmart·Software Engineer·Technical Phone Screen

May 2026
Interviewed for a SWE role at Walmart Labs, got an OOP design question that felt pretty standard but tripped me up more than I expected.
  • What is the difference between inheritance and composition, and when would you choose one over the other?

“I knew the textbook answer but fumbled when they pushed on the 'when to use which' part.”

View Post

Walmart·Software Engineer·Technical Phone Screen

May 2026
Walmart Labs SWE interview that was basically one long project deep-dive. They wanted the full picture on everything you've built, not just a highlight reel.
  • Walk me through a major project you worked on: what was the problem, what was your role, what technical and product decisions did you make, what challenges came up, how did you measure success, and what were the actual results? Also, what would you change if you did it over?

“This is the kind of question that sounds manageable until you're actually in it and realize you've been talking for four minutes and haven't gotten to the hard part yet.”

View Post

Walmart·Product Manager·Onsite - Product Sense / Strategy

May 2026
PM interview at Walmart Labs with two product design questions, both focused on food delivery and logistics. Pretty standard for the space but the order-assignment one had enough depth to keep me on my toes for a while.
  • Design an order-assignment system for an early-stage last-mile food delivery app.
  • Design an app similar to Swiggy. Walk through the product from scratch.

“This one took me a minute to get my footing.”

View Post

Walmart·Product Manager·Onsite - Product Sense / Strategy

Jun 2026
Walmart Labs PM interview with a cross-industry strategy question about applying retail data to a telemedicine product. Single question, fairly open-ended, felt more like a product strategy case than a typical PM screen.
  • You're a PM at a retail company that has just launched a telemedicine platform. How would you use the company's existing retail data to improve user engagement on that platform?

“This one took me a second to orient.”

View Post

Walmart·Product Manager·Technical Phone Screen

Jun 2026
Got a product estimation question for a Walmart Labs role, pretty classic retail ops framing but it trips you up if you haven't thought through store layout and throughput before.
  • You're opening a new Walmart store. How many cash registers do you need?

“I started with peak hour throughput which felt right, but I didn't anchor on store size early enough and the interviewer kept pushing me on that.”

View Post

Walmart·Product Manager·Onsite - Cross-functional / Panel

Jun 2026
Walmart Labs PM interview with a cross-functional twist. They asked me to explain a technical project to a non-technical stakeholder, which sounds easy until you're actually doing it live and realize you've been leaning on jargon as a crutch for years.
  • Walk me through a technical project you worked on, explaining it as if you're talking to a product marketing manager with no engineering background.

“I picked a project I knew well and immediately started talking about the architecture.”

View Post

Walmart·Backend Engineer·Technical Phone Screen

Jun 2026
Walmart Labs backend round, pretty much one meaty algorithm problem about scheduling and room allocation. The follow-up on complexity and testing felt routine but they did push a bit on the two different approaches, which I wasn't fully expecting.
  • Given a list of meeting time intervals, find the minimum number of conference rooms needed to accommodate all meetings simultaneously.

“I went straight for the min-heap approach: sort by start time, keep a heap of end times, and pop whenever the next meeting can reuse a room.”

View Post

Walmart·Software Engineer·Onsite - Multi Round

Jun 2026
Four rounds of Java and microservices interviews for a Senior SWE role at what turned out to be a large retail company, only to find out on day one of onboarding that the actual job was becoming a marketing tool specialist with coding basically optional. Classic bait and switch, and now I'm the one left wondering if I should cut my losses or just roll with it.
  • Basic Java coding exercise during the hiring manager screen.
  • Leetcode-style algorithmic problem, solved in Java.
  • Discussion of microservice architecture design and principles with a staff engineer.
  • Code review style exercise in the final round with the hiring manager.

“Pretty easy, nothing that would stress you out.”

View Post

Walmart·Software Engineer·Technical Phone Screen

Jun 2026
Phone screen for a software engineer role, just one coding question the whole time. Pretty short, nothing surprising if you've seen the forum posts about it.
  • Implement a tic-tac-toe game.

“This one gets mentioned a lot on forums so I'd seen it before.”

View Post