It went OK I think, thanks for asking. Basically it was a half hour long technical interview covering basic probability, finance, regression, time series analysis and programming. It was very relaxed in the sense that the interviewer made sure I would only answer the questions and topics I felt comfortable answering. Concerning the programming part, the interviewer first asked me about my proficiency in all my languages and then proceeded to focus on my strongest one (python).
Hey, it's great to know that you interview went well! I was just wondering how important time series is for the application to UCB MFE since the list of prerequisite courses on the Berkeley MFE website doesn't enforce knowing this. Good luck on hearing back on your application!