Indeed recruiter contacted me by phone. It was followed by two 1-hour online interview sessions with 2 different people each time. They asked questions about how you would test the full-stack. After that was invited onsite for a full day interview: coding challenge, code review of their test scripts, lunch, mentoring session, and manager interview. The process was mostly smooth, each employee appeared very happy to be working there. The bad thing was that the laptop they gave me was not much bigger than a tablet, and having to flip between 3 different screens back and forth and not having the full picture was not ideal.

It's just a churn machine and the process is very impersonal. Expect karat/LC questions from the start. If you pass, expect more and a very long process full of more LC or whiteboards. The only plus is that the Karat interviewer was nice.