I applied to Walmart in June and heard back from a recruiter two months later. The first round was with Karat, involving topic-specific questions and an algorithm problem. After passing, I was scheduled for an onsite interview with senior engineers, which covered projects, tech stack, and included a dynamic programming question. The third round was a system design interview with a focus on resume-based architecture. Finally, I had a behavioral interview with the senior engineering manager. The process took about a month. Overall, it was structured, comprehensive, and tested a variety of skills. Easy to medium LC questions.