Scheduled a brief intro phone call with one of their engineers. He did not call at the scheduled time and later rescheduled for another day. After that call, there was another more technical call. The questions were super easy and I finished them faster than any other phone screen I have done even though I had to use a language (Ruby) that I hadn't been coding in recently. Still didn't get invited to the onsite, though, and even though the interviewer specifically mentioned how how he thought that feedback was an important part of the process, he ignored my email asking for feedback.