During the phone screen they tried to check if there is a fit. If you're successful you get invited to on-site. The on-site was 3-4 hours. Here are exactly the questions you need to know: Brain-teaser based on socks and pigeonholing principle. Another brain teaser based on houses on the street and using deductive reasoning to figure out rooms. There was also a question on finding the next item in the sequence. One question was on reversing the sequence of words in a sentence using the least amount of memory. One question on finding permutations of an array of numbers (brush up on DP). Then there was a white boarding session where I was asked to design the "snake" game from back in the day. A question was also asked on finding the common ancestor of two nodes in a tree. Then a question on implementing a stack using to queue (or vice versa). There were obviously behavioral questions.