I was referred by a friend who was their former employee. Everything seemed good in the first week. I passed the phone interview with some basic coding and algorithm questions. But things started to fell apart when I tried to schedule the on-site interview with them. At first I was expecting they'd start to coordinate the time slots or flight/hotel booking with me, but neither happened. And for 1 week I even couldn't reach my recruiter through phone nor mail. I almost pissed other recruiters off for I couldn't settle my schedule. In the end I had to prioritize other interviews and just directly assign the date I'm available to them. But then they told me that they couldn't find a hotel. So I had to book a motel by myself and ask for reimbursement afterwards. The interview process only lasted 3 hours with 4 interviewers and ended before noon. Most questions were general coding and system design on white board. Though I feed the questions are less structured nor focused compared to like Google or Amazon or Microsoft, almost feel that they're not sure what kind of candidate they're looking for. Since the phone interview I had had the impression that I'm going to work on machine learning in a data team. But then I learned on-site that the position I was interviewing is essentially data processing. That's why after the on-site interview they arranged yet another phone interview with their machine learning team lead. 1 week later I sent a follow-up mail to them and was told that I'm no longer considered.