The process started with a quick HR screen (15 ish minutes) and unfolded into a second round with a lead member at my position (30 minutes) and then a final round which lasted 2.5 hours (two groups of three team members for an hour and then a half hour session with a program manager.) Most of the people I met with were located over seas so I was asked to provide availability prior to standard working hours, which I found to be a bit weird since usually a company will inconvenience the interviewer rather than the interviewee, but it really wasn't an issue for me but it bears mentioning. There was a case study that was provided prior to the final round which was the basis for the second portion of the final interview that I found to be really awkward as I didnt have the ability to expand or explain things on a white board or index cards, but again this seems pretty standard for their positions across the board. I received a rejection 48 hours after my final interview so I cannot echo the sentiment that they ghost candidates. On the whole, I'd rate the experience as a positive as they moved pretty quickly and rather smoothly. I've been through MUCH more unprofessional processes.