There was an informal but very friendly interview with the technical team, then an assignment was sent. They were so flexible with the deadline for submitting the solution. After accepting my submission, another interview was scheduled.

During telephonic interview they asked me about my prior experience in data science, machine learning and analytics, while in face to face interview they discussed the their problems and asked me to suggest any solution for it. They have given me all day to think about the problems and come up with new ideas and solutions.