I submitted my application through Purdue Website. Then I received interview invitation (email) a week after. Interview wasn't too bad. The questions were not too hard. If you do some research you can be prepared for it. Received an offer in a week after my interview.

Virtual recorded interview. No communication with a real person. Disappointing, but it was a fair interview with questions that could be prepped ahead of time of time up to three tries, I believe.