I applied through university. The process took 5 days. I interviewed at C3 AI (Chicago, IL) in Oct 2017
Interview
I took a OA first. 60 minutes with 3 coding problems and some multiple choice. After 2 days of OA I received skype interview invitation. The interviewer is very nice and it's a pleasant experience.
Interview questions [1]
Question 1
Output all nodes of a tree without use stack or recursion.