The first round of interviews happened one month ago. One week after that, I was informed I was invited to an onsite interview.

As usual, it started late, at noon. The interview consisted of one system design, two coding, and one culture session.

The interviews were not difficult, but they did require solid knowledge of database design, basic data structures, and algorithms. The topics covered no more than strings, pointers, graphs, and trees.

LeetCode is more than enough for coding. Take more time on database design.