The interview process began with an on-campus interview. This was a 2-on-1 session with two coding questions presented over one hour. The questions were straightforward and focused on problem-solving and communication, with interviewers offering direction when asked.

I passed the first round. When asked if I was available to stay for a second round, I declined due to a class immediately afterward. Consequently, they offered to fly me to NYC for further interviews.

In NYC, I underwent two additional one-hour technical rounds. The questions increased in difficulty, ranging from the design of distributed systems to implementing and applying an LRU cache. Following these technical sessions, an HR representative spoke with me for 20 minutes. Finally, a manager conducted a 30-minute interview, posing a final technical question.

I received an offer six days later.

Find the second smallest element in a binary search tree.