EPAM Systems Senior Developer interview questions

After short call with hiring manager I got to technical interview. Since I was being hired as a contractor for specific project, the interviewer spent great deal explaining project details from technical point of view while not revealing clients name yet. After that, few questions about what I have done in my career that might be relevant to the project. Lastly, there was a coding session. The Task was very simple, but the interviewer was watching the me thinking and process.