I have passed through a few stages. First one was the language interview, than - HR interview and the last one - technical one. I have passed, so I've got an offer interview.

Only positive impressions. I was surprized by the quickness I received feedbacks from interviewer. Interviews were conducted by professionals in theirs areas so overall impression is very good as well. Interview questions are directed to estimate interviewee's level of understanding of theory, not only basic definitions knowledge.