SpaceX Test Engineer interview questions

The SpaceX interview process is very extensive, with approximately 2 months elapsing between my application to the position to my onsite interview. The process consists of an initial phone screen followed by one or more technical phone interviews. These focused on core engineering knowledge and asking resume-focused questions. The onsite interview consisted of a 20-minute technical presentation to a team of engineers followed by a series of one-on-one interviews with managers and higher-level engineers. These interviews covered software (coding exercises), hardware (understanding of test procedures), EE fundamentals (circuit diagrams, understanding circuit components), and personality (classic HR questions). The onsite process took approximately 6 hours and was rather grueling. I received an offer within 24 hours of the onsite, which I declined.