DataArt interview questions

So, my brother recommended me this company, he was .NET Senior developer there for about 1 year. He told DataArt's HR about me, I had skype interview, cause there are no senior java developers in DataArt in Dnipropetrovsk. First interview was very good, but I failed, and HR told me to prepare for the second interview in month. The second interview was better and they hired me.

HR Tamara sent me request for the interview and I accepted it. First I've had interview with the goal to check my English level. It was phone interview. Then I've had two interviews: the first one was basic, with general questions. It was with Tamara. The second one was technical. Both interviews were held in one day. Interviewers were friendly and I didn't feel any discomfort. In a couple of days I received the offer and accepted it.