First round screening, second round behavioral with general work history and technique questions, third round technical with one part general math problems and one part graph/model analysis. After each of these rounds there was immediate communication. The fourth round was another behavioral style interview with a higher up on the team, interviewer was warm and made the interview seem like a technicality just for them to ghost and never follow up after.

Started with an initial screening phone call that was pretty standard compared to ones that I had done with other companies. After that was a behavioral one with someone on the team I would be working on. I never heard back from the company, despite reaching out multiple times afterwards.