I received an over-the-phone interview lasting for around 25 minutes with one interviewer asking maths questions. I needed to solve them without using pen and paper, mainly of statistics and probability type.

30-min phone interviews. Asked three math-related questions. Were asked to go through all the steps of my thought process. Questions were not tricky but complex, Need to think quickly on your feet. Make sure to have a clear mind and be agile for their interviews. The phone screen was not meant to be behavioral.

Interview process was professional, the interviewer was very polite and willing to answer questions. Started out with an excel VBA exercise, followed by a first round phone interview, and another exercise.