First you apply and get an OA. If you score good enough (don't need perfect score), then you get the interview where they give you really hard questions. It depends on interviewer, but someone I knew got an easy string question.
Leetcode + system design. Nothing unusual. Leetcode questions u can find on blind 75 and standard system design question. Interviewer will provide hints for leetcode qns. I went through a total of 4 rounds
easy-medium question, but I did not fully finished it. You'd better ask clear clarification question and edge case. This could help you get through question easily. And i did not pass it.