Initial recruiter call followed by a take-home assignment. I had breezed through the take-home assignment(in 3 days) and was invited for a virtual onsite. To begin with, their product was overwhelming to understand, however, they have decent documentation on their website. They have smart engineers(ex-Facebook, Google, etc) and were straight to the point when interviewing me - no tell me about yourself, they were very busy or at least seemed like that.
The onsite interview consisted of 4 different rounds with 4 engineers and a director.