1. Very quick call with the COO. He explained what they do. Did not let room for any question. 2. 1-hour long peer programming call with the CTO. Had to solve two code problems ala leetcode. One of them was about finding and fixing some bug.
Felt like an odd set of interviews that did not gathered what kind of experience I actually have. It could be very well passed by someone fresh out of college, and not passed by someone with tons of experience. Basically, prepare as if it were an interview for some of the big-corps.