I recently interviewed for SDE3 at walmart, these were the questions asked

Round 1 - there were 2 questions asked in this round, both of medium difficulty, they were from DP and sliding window.

Round 2 - it was tech specific round where multiple JS,CSS,HTML and react specific questions were asked

Round 3 (HM) - this round was basically focused on past experience and projects and HM also gave an overview of the product and team culture.

Verdict - selected and joined