The interview process (for me) was unprofessional and disorganized at best. The people I spoke with, and met, were all very nice and professional in-person. However; getting them to respond to general inquiries or even getting an answer about the job status is nearly impossible.
I understand that the candidate they are most interested in will get the most amount of responses/attention, but that doesn't mean that the company should abandon professional protocol. This is especially true when the candidates travel to an on-site interview. It's common courtesy on both sides to send, at the least, a quick note detailing a job status update.
Other than that negative outlook, the interview process was pretty standard. Phone screening first, then an on-site interview. The on-site interview determines whether or not you got the job. The questions were mostly of my background/resume, and less about "Tell us your greatest weakness." Though, this may change based on who is interviewing you.
Hope this helps to the fellow Glassdoor readers.