The recruiter contacted me via email. I was asked to fill in all times I was available for an interview. My interview was one week after I had received the first ('no-reply') email. We had a 30 minute meeting where I got an introduction to the team's tasks, I introduced myself and the interviewer asked me a series of questions.

the process is very strange It's not clear who checks the homework, I was interviewed twice in a row within a month (don't know how cooldown period works there). The first time they wrote comments what wasn't okay for them, and the second time I interviewed I took those comments into account to fix homework. Again reject, no explanation