Total three rounds, first round was phone interview and second round was technical onsite interview, the last round was with the CEO. The first two rounds were fine but the last round with the CEO was weird. He didn't seem to understand the technologies I know but still questioned me on that.

I was contacted via HR agency. The response took more than 3 weeks, and was postponed. The interview itself was easy, and I was able to answer both algorithmic questions in time. The interviewer seemed distracted and barely looked at my answers. After that I got a response from HR that I didn't pass. Looked like waste of time and they didn't really need anyone.