3 round of interview. first round: reach-out call with CTO total 30 mins basically introductions about this company second round: phone screen with Data scientist total 30 mins 15 mins: personal project presentation 15 mins: follow up questions about the project ~5 mins：ask interviewer third round: final interview with data scientist total: 45-60 mins 15mins: personal project presentation 15 mins: follow up questions about the project 15mins: general tech/stats/machine learning problems 5 mins： behavior questions 2-3 mins: ask interviewer