There was many steps. It began with an HR phone screen, then manager screen, take home, panel and executive interview. The manager was below average and the take home assignment was a complete waste of time. There are essentially no details on what they are looking for and they give no feedback. However, the recruiter was great.

short, formal, normal. I didn't amke it to the end so experiecne may vary. the interviewers were pretty nice and knowledgable. I talked to at least 3 people, and it did feel like rather formal than casual.