Mastercard Data Engineer interview questions

One round of interviews asked few technical questions on error metrics when running machine learning algorithms, focused more on personality and ability to work on a team. Other than that, was pretty easy, very friendly and nice people.

one round technical interview with the data team manager, mainly focused on database design and query. Second round is behaviour through a phone call, a general discussion of resume and some standard behaviour questions. It was a bit surprising to have the sizing problem in part of data engineer interview.