Rotating interview with various team members. All revolve around a single project, which you begin working on prior to the interview, and extend on the day of the interview. All-day interview, including lunch with future co-workers.

I got a email from the recruiter saying he is interested and want me to provide him my available time slot for the first phone interview. And he arranged first interview on a day weeks later. Then the whole interview experiences is not professional. She just ask a couple of basic questions without introducing Glowforge in much detail. I already had the feeling that she is not interested in my for this position during the phone call. And she says there will be a technical interview for next few days but send me a rejections letter.