1. Tech Screen: Build a search input field with React where you communicate with an API. How would you optimize it (Throttle, cache, etc.) 2. Build a filter search function given a list of dates. Very similar to merge ranges. 3. Build a class Tree data structure. (This is very stupid generic leet code problem, I wanted to walk out the moment I was given this problem) 4. System design a CSV upload/save API. How would you store csv files and how would the client upload/retrieve those files.