The interview experience was awesome and was worth remembering even though it happened to me approximately 6 years ago. Thank you Microsoft. Two phone interviews, flew me to Montreal for 3 more rounds of face-to-face interviews 1) Phone Interview 1 - asked me about basic data structure (linked-list, stack etc..) 2) Phone interview 2 - asked me about a binary tree and write out a sorting algo for the binary tree 3) Face-to-face interview 1 - design a phone book for mobile applications 4) Face-to-face interview 2 - implement a sudoku game 5) Face-to-face interview 3 - an algo to detect an "inflection point" in a semi-sorted array of integers Failed to proceed to interview Face-to-face interview 6 & 7 (back then, the 7th interview was for the hiring details).