I was referred in by a current employee, and had one exploratory conversation with the hiring manager before starting the formal application process. I had one phone interview, one in-person interview followed by a short chat with a couple other members of the team, and then a half-day on-site where I did a presentation and met several other team members. The process took about 4 weeks from exploratory conversation to offer. Overall the interview process went very smoothly. I had a fantastic recruiting coordinator who gave me the overview of the process, provided frequent updates, and responded quickly to my questions. The interviewers themselves were casual and friendly, and importantly, had a sense of humor. There were a couple challenging questions, but they were all relevant and fairly easy to predict.