SpaceX Manufacturing Engineer/Supply Chain interview questions

1 screening with a recruiter, 2 30 min screening calls with engineers on the team (manager and the level above), 1 on site interview that you're flown out for. It takes around 6 weeks at the longest.

First round fine, second round intense and very technical. Asked intro question, then dived in further and further, asking clarification questions and questioning your answers. Must be very confident and prepared. Not looking for individuals who don't know 'first principles'.