The process took approximately a month and a half, starting with a general HR interview followed by an interview with the team leaders. After which I was given a case study to solve and 3 business days to work on it. This case study was then presented to the tea leads and management with a discussion of the proposed solution and step by step analysis. This took almost 2 hours, but understandably can vary from case to case. Afterwards it less than a week till I received an offer from the company.