DS interview: We want to solve business problem X. This is the data we have available, how would you go about it? After suggesting a solution: OK, you suggested using ML technique Y, what are some considerations to make sure you can get a response in extremely low latency ? Eng interview: Tell me about a past project. What were your responsibilities, how much of the engineering did you do yourself? How did you divide up responsibilities between yourself and the engineers, how did you decide who did what and how did you meet in the middle?