EPAM Systems interview questions

I am one of most active trainees, so I've got an invitation to the interview. HR wrote to me in Skype and we agreed on interview schedule on the convenient time for me. She was very polite. On arrival, I was offered some coffee and a room to wait for interviewers. There were two interviewers, they told me some information about the project and asked me if I'm interested, so we could talk further. They asked me questions on all the requirements for the vacancy. The atmosphere was nice and friendly. No pressure, no showing the supremacy, interviewers kindly gave me some hints on some questions. After one and a half hour we ended the interview. They told me that the decision would be in two days (I'm not the only one pretending for this vacancy, it seems that we were 3 candidates). I've got a very good impression about this company and its buisness culture.

First HR department contacted with me and gave me information about Poland and EPAM then asked me if i want to work with them, then a technical interview is arranged with an EPAM software engineer. The interview was about computer science and Java language in general, also they gave me two problems to solve in 1 minute, one question was about multithreading and second question was about a recursive function.