Referred by a friend and got contacted by a recruiter in Data & Infrastructure field. I am not quite sure whether this position is the best fit for me, but I took the phone screen one week later. I answered two quick questions (semaphore vs. mutex, write-back vs. write-through) and two coding questions. Even though I aced all of them, I felt like I am not in a strong position in the infrastructure track. One week later, the recruiter invited me for an onsite interview and kindly agreed to switch me to the application track. The onsite was amazing and I had lots of fun. Recruiters seemed to let you impress them with great food and a working environment there. Four rounds in total: two algorithm, one system design, and one manager. I found lots of details were asked in the algorithm rounds: you are supposed to prove assumptions mathematically and make sure you got everything correct at each step. It was not like coding up the answers correctly was the final expectation, but rather the way you tackle them. For the system design question, make sure you did some research on the internet to find how to prepare for that (Quora, HireTech). If you are familiar with web servers, load balancers, master-slave databases, data sharding, caching, denormalizing, etc., you are in good shape. Got an offer two weeks later. It is a late offer because the recruiter was not so quick to reply to emails and didn't respect my deadlines. I have signed on with Google and need to reject it. But overall, great company and great interview process.

NDA.