I applied online. I interviewed at SpaceX in Dec 2020
Interview
Had several interviews (approximately 6) across multiple positions (approximately 4). Two interviews were asking basic questions, e.g. strengths/weaknesses, greatest accomplishment, etc. Those were about 20 minutes and with great recruiters. Three of which asked EXTENSIVELY about my past experience. Be able to talk about the small technical details of your past jobs. Talking about my past technical experience was more or less a conversation and did not feel like an interview! Those interviews went about an hour. The final interview was with an arrogant Engineer who asked me BASIC engineering questions and made me guess which answer he wanted.
I applied online. I interviewed at SpaceX (Brownsville, TX)
Interview
Asked technical questions regarding basic college engineering fundamentals, asked engineering portfolio questions regarding previous internship and project experiences, and asked hypotheticals based on what areas were owned on those projects.
First was with a lead engineer (technical), then with a recruiter (behavioral), then with another lead engineer (technical), future would have been on site. It was a very accelerated timeline and fast process.
Multiple rounds of interviews ending with an all day onsite interview. Asked questions about background, classic textbook problems, and coworker interactions. Very technical and difficult. Lots of time spent trying to understand your thought process