DevOps / SRE Engineer Interview Experience at Walmart Global Tech – 2025

This is a straightforward opening round, matching the real reported structure closely. The recruiter begins with basic background questions and then specifically asks candidates to rate their skills across different DevOps tools on a 1-10 scale — Docker, Kubernetes, Terraform, Jenkins, and cloud platforms individually — which is a distinctive part of Walmart's early screening. Questions about CI/CD pipeline experience come up next, and the round wraps with availability and logistics rather than deep technical probing.

This is where the real assessment starts, and the interviewer consistently digs into practical scenarios rather than textbook answers, matching the real reported pattern. Candidates are given a scenario: a Jenkins pipeline that has been working fine suddenly starts failing at the deployment stage only, and asked to walk through the diagnostic order — checking recent changes to the deployment target's credentials or permissions first, since the build and test stages passing rules out most code-level issues, then checking whether the target environment itself has changed (a certificate expiry or a network ACL change, for instance).

This deeper technical round covers Kubernetes at retail scale, given Walmart's known peak-traffic events like Black Friday. Candidates are asked how to design a Horizontal Pod Autoscaler policy that reacts fast enough for a sudden traffic surge without thrashing (scaling up and down repeatedly) during normal fluctuations, and the tradeoff between using CPU-based scaling versus a custom metric like requests-per-second. The Terraform portion asks how to structure state files for a multi-region retail infrastructure so that one region's apply cannot accidentally affect another's resources.

This closing discussion covers compensation expectations and confirms there are no conflicting notice period constraints.