The process was easy. Submit an application and then wait 3 weeks. After the waiting period you are notified if you receive an interview or not. The interview is solely behavioral questions.
I interviewed at Columbia University (New York, NY)
Interview
Easy to do, need to be prepared and show your passion about the position. Make sure you bring good questions to the interview. Make sure you have done research about the professors and lecturers. Know the subject
I applied online. I interviewed at Columbia University (New York, NY)
Interview
I had a decent experience with the interviewers, even though they seemed somewhat unfocused. They were friendly and approachable, which made the conversation pleasant despite the lack of concentration tho.
Questions are most easy. Just go through the experience on your resume and introduce yourself (tell me about yourself…) and some of questions about how you master this courses. Also, any questions you want to ask.