Phone interview from the New York office. The interviewer lacks professionality in conducting interviews. The questions he asked are not sound in logic. Without sufficient background knowledge in the field, he insisted on being right and forced me to deny my own research. When challenged on his rationale, the interviewer said that this was their company culture. Well. It is true everyone has a price but sacrificing dignity to an office bully is simply not worth it.

Very technical based for multiple rounds (6+) focusing on calculus, probability, stats, and a few brain teasers. There is a coding test at the end, where you are given a certain time frame to submit back.