# Walmart Labs Software Engineer 3 Interview Experience Aced (formerly Exponent) publishes a public search API over its indexed pages; the guide is at https://www.aced.io/agents/agent-access. Source: https://www.aced.io/experiences/walmart-labs-software-engineer-interview-5e1b59 Source observed: 2026-11-04T22:49:44.320Z Last checked: 2026-11-04T22:49:44.32+00:00 Indexed: 2026-11-06T01:11:34.37+00:00 --- # Walmart Labs Software Engineer 3 Interview Experience We publish interview experiences to help candidates prepare for technical hiring processes. This experience concerns a **Software Engineer 3** role at **Walmart Labs**, at the **Mid Level / L4** level. It was submitted from **India**, for an **onsite** interview. ![Walmart Labs logo](https://exponent-static.s3.amazonaws.com/company_logos/walmart.png) ## Outcome and timing - **Result:** Rejected - **Interview date:** 7 months ago - **Submission:** 21 days ago - **Interview timespan:** 1 week - **Difficulty:** Difficult The relative dates above are preserved as provided. This page was observed on **2026-11-04T22:49:44.320Z**. ## Interview process The candidate reported not being prepared for the low-level design (LLD) interview and initially expected only one data structures and algorithms question. Because the first question took too much time, the remaining question had to be handled quickly. The process listed one technical interview round. ## Interview rounds ### Technical interview — 3 questions **Question types:** [Coding](https://www.aced.io/questions?type=coding) and [Technical](https://www.aced.io/questions?type=technical) #### Specific questions 1. [Merge k sorted linked lists.](https://www.aced.io/questions/1167) - The candidate reported reaching the correct optimized solution. 2. [Implement LRU Cache.](https://www.aced.io/questions/3625) - The candidate made implementation mistakes but had the correct approach and had to complete the question quickly. 3. **Logging library design** - This was an LLD question. - Additional topics included Spring internals, application-related concepts, a question about one transactional method calling another transactional method in the same class, details of linked-list implementation in the JDK, how to make a linked list thread-safe, and ConcurrentHashMap implementation details. ## Preparation resources and access We offer access to more than **1.8k+ interview experiences**, including this interview's full content and new experiences added weekly. The visible preview invites candidates to [Become a member](https://www.aced.io/upgrade?src=experience) or [Share your experience](https://www.aced.io/questions/contribute?src=experience). A **24-hour trial starts once your submission is approved**. ## More Walmart Labs interview experiences - **Software Engineer — Walmart Labs · May 2026** — “Wandered around of all DSA algorithms to come up with solution. Finally could land with BFS approach at the end with that couldn't complete the code and test.” **1 round, 1 question.** [Read full interview](https://www.aced.io/experiences/walmart-labs-senior-software-engineer-interview-980a5c?returnPath=%2Fexperiences) - **Software Engineer — Walmart Labs · Feb 2026** — “It was a fair interview. The questions were expected (medium style leetcode). There was a home project in my case too that I had to present” **4 rounds, 2 questions.** [Read full interview](https://www.aced.io/experiences/walmart-labs-software-engineer-interview-80c187?returnPath=%2Fexperiences) - **Software Engineer — Walmart Labs · Jun 2025** — “The interview process was well-structured and fairly rigorous compared to others I’ve experienced. I appreciated that the recruiter clearly communicated expectations upfront, which helped me prepare in the right direction. The technical rounds were challenging but relevant to the role, and the interviewers were professional and engaging.” **5 rounds, 6 questions.** [Read full interview](https://www.aced.io/experiences/walmart-labs-software-engineer-interview-751680?returnPath=%2Fexperiences) [See all 9 Walmart Labs interview experiences →](https://www.aced.io/experiences?company=walmart-labs) --- [Read this page’s summary](https://www.aced.io/agents/api/public/v1/page-tldr?url=https%3A%2F%2Fwww.aced.io%2Fexperiences%2Fwalmart-labs-software-engineer-interview-5e1b59&trace=t_679ff9ab98f3) ## Ask a follow-up about this page Need a more specific answer? Ask the exact question you have. It returns a fresh, cited answer from Aced (formerly Exponent)’s knowledge base. No account or API key required. Open this URL with your own question, URL-encoded. Include your question in q. 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