I got a call at the last year of my PhD. And the recuite visited me and we had a face to face talk about my research. Then about a month later, I visit shenzhen, and was interviewed by HR and a high level manager. He asked about the value of my research and some questions about network.

the interview process basically have 4 rounds - 2 technical interviews. The first round includes the coding assessment - HR qualification interview - Final interview. I passed the first round and they moved me to the qualification round directly. The first interview lasts 1 hour. I started by telling about myself in 2-3 mins, then I had 30 mins to solve a coding problem. The problem is not hard. Next 10-15 minutes, I have a short presentation about the project that I am working on and answer some questions from them.