HR approach you first and schedule the first interview to talk about the company and about you. They give you a take home code challenge and you need to finish it so they will schedule your second interview with the managers.
The interview is pretty easy. They ask you about your experience, what you wrote on your resume, and some basic CS questions. There is a real time coding question too.
The main contributing factor of the negative rate is that they throw you into blackhole after the interview. They won’t reply your emails or even send you a minimal email template to reject your application. That is really disrespectful.