First round:
Intial Phone Tech interview.
Questions asked were in leetcode: Merge two arrays, Find where to merge in arrays and merge

Second round/Final:
5 rounds of interviews
Interview coordinator didn't mention anything on agenda for each interviews.
First round: Java concept, input/output from example
Second round(Pei Wang was the interviewer): Very unprofessional. This is a virtual video interview but she turned off her camera after asking my background. Asked me to write Singleton class. After finished writing it, there was silence for about 5min. I asked her THREE times if this is what she's looking for. She asked me to google what Singleton pattern is. I googled and it matched what I wrote. We moved on to writing Factory Pattern. I wrote the code perfectly fine while explaining. Silence for another 5min. She asked me to google it again. Then she asked me to write test cases. After writing the test case she just kept silence for another 10min. After she came back, she told me time is up. What a waste of time.
I REPEAT. her name is Pei Wang and the worst interviewer ever.

I didn't bother continuing the interview process.