Multiple rounds of interviews, the CEO might ask if you can put a nut on a screw behind your back or draw a chair. For the most part it is a technical interview so do your homework.

Applied online. They reached out to me two months later, then only replied again a month after that. Brought me in for an interview where the engineers didn't seem to know what they wanted. Was informed later that they declined to move forward with a message that referenced a conversation that never happened.