Was reached out to via email (was referred to the CEO via investor network), then had one phone screen 30+ minutes. After the call I was emailed a homework assignment that was pretty long, but definitely relevant to the role. Then an onsite visit with many members of different teams. One of the best and most memorable things about the interview experience was how accommodating and flexible they were to all my schedule changes as I had to deal with a lot of unexpected travel interruptions (aka NYC snow storms preventing me from getting back to SF for the interview).