There were five 1-1 onsite interviews in a row. Both started with simple self introduction. The first 3 rounds mainly focused on technical problems with coding on a white board. The topics included algorithms and data structure. You have to explain the ideas, improve the codes, and analyze the complexity. The forth round was background checking by HR. The final round is the manager talking about the team division.

They claimed the remote interviews would have at most 3 stages, but I only went through 2 that day. Self-introduction and a few basic questions about OS, OOP, and C++ at the beginning of each stage. The remaining is a typical coding test where the questions are often seen in Leetcode.