I recently interviewed for the Data Engineer III role at Walmart. From coding and system design to behavioral questions, each round tested a different aspect of my skills. In this post, I’ll share a…

Data Engineer Things

A detailed walkthrough of Walmart's Data Engineer III interview process, covering four rounds including technical SQL and DSA questions, Spark internals discussion, project deep-dives, and behavioral interviews. The candidate shares specific questions asked, preparation resources like LeetCode and StratasScratch, and optimization techniques that were tested. Key focus areas included SQL window functions, Spark memory management, data skew handling, and using the STAR method for behavioral questions.

My Walmart Data Engineer III Interview Experience: Rounds, Questions & Tips

Round 2: Sql optimization+ Spark Internals