No calls, no chat, no human communication, just a generic email with boilerplate text and a link to a coding assessment. It included 5 problems, and was timed to 2 hours. Included 2 subarray coding problems that you could implement with multiple loops but that you should implement with an O(n) algorithm or the tests would fail. One simple SQL problem. A design problem and an initial design that you are supposed to fix. Another coding problem where you read an API