Interesting but technically challenging. They are a robotics focused company and so offered an initial challenge relating to circuitry emulation which was very unseen to me. However, the people seem incredibly talented and warm, so no harm done!

Quick intro call to talk about mutual alignment. The technical interview is like what others have said, a timed take home assignment for 90mins. You need to record yourself while you code and expect you to speak your thoughts out loud during that process. The question itself is pretty challenging but definitely doable, it is a variant of the CPU scheduling algorithm.