I'm writing this review based on my experience and also on behalf of my friend who also applied there at totally different role.
Initial chat with Recruiter went well. That is the only thing which was good about it.
Scheduling of next round was a mess, there is a disconnect between HR and their assistant, and the time difference, because most company are in china.
Finally they scheduled the next round, it was straight forward coding phone screen. I wasn't interviewed last couple years and did it just for fun and failed. No questions about it, my fault.
When I spoke with interviewer he said they have 2 SRE now and need to hire 15 this year.
But later my friend told me that he applied there, on completely different role, I was told him what I was asked so he had time to prepare.
I spoke with him and he solved all 3 coding challenges. But next day he forward me email, that he was rejected.
They may claim that their bar is high, but in fact it looks more like discrimination by race or other things, because I don't see reason to reject person at this stage if he solved all challenges.