Walmart SDE 3 Interview Experience: DSA and LLD Focus
Interview Experience
Walmart SDE-3 Interview Experience Recently interviewed for SDE-3 at Walmart. Sharing my experience in case it helps others.
Round 1 DSA Q1: Next Greater Element II Q2: A grid-based problem similar
Full Details
Walmart SDE-3 Interview Experience Recently interviewed for SDE-3 at Walmart. Sharing my experience in case it helps others.
Round 1 DSA Q1: Next Greater Element II Q2: A grid-based problem similar to Walls and Gates / Rotting Oranges (classic BFS pattern) ➡️ Got confirmation from the recruiter that I cleared Round 1.
Round 2 LLD + Java This was my first Low-Level Design round, and honestly, I didn’t perform well here. I was able to answer Java and Spring Boot–related questions confidently. However, my LLD approach and structuring were not strong enough. ❌ Didn’t qualify for Round 3. Takeaway DSA alone isn’t enough for senior roles. Strong LLD fundamentals are critical for SDE-3 and above. Lesson learned — time to focus more on design patterns, object modeling, and clean design thinking. Hope this helps someone preparing for similar roles. All the best! 🚀
About This Question
This is a candidate experience report from a walmart interview for a swe role during the system design round reported in 2026.
It covers the following topics: Graph, Queue, Oop, Matrix, Stack .