Multiple choice technical questionnaire, followed by HR screening. The HR person was very late and kind of abrasive on the phone.

Next was a one-hour coding phone interview. The interview was with the VP of engineering, which was surprising. He was very nice and gave good feedback along the way. He let me use Python, though he preferred C++. Questions were on basic data structures and some basic probability. These were simple fundamental things, which I stumbled around recalling the details, and he was patient and helpful along the way.

This last interview was a positive experience and did not feel super high-pressure. Unfortunately, I did not pass it.

Basic coin flip probability questions

Write a data structure for a tree. Traverse in multiple ways.