a couple of interviews with a 30 min presentation. At the first phone interview, then group interviews and finally a 30 min presentation. in the interview, they asked about work experience, programming experience, previous work experience, and publication.

Very unprofessional and impolite ways, first round is phone screening, then 3 individual ones half hour each, for the last one the interviewer did not even show up, so I waited and someone came to apologize after 15min waiting. Some interviewer came into chat without any introduction and left without notification, they don't like smiling and don't greet people or be a nice way to start the chat.