Extern applicants have rated the interview process at Walmart with 2 out of 5 (where 5 is the highest level of difficulty) and assessed their interview experience as 100% positive. To compare, the company-average is 62.1% positive. This is according to Glassdoor user ratings.
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Phone interview, very simple but professional. Spoke with someone who worked on the team I was to extern on, with plenty of time to ask questions and also received the follow-up rather quickly.