I put in an application online expecting nothing. 1 day later, I got a call back from a recruiter to schedule an interview. The interview was a phone interview with a senior engineer. It delved deeply into the technical details of my previous internship and project experience. Make sure you can explain everything on your resume, and talk in great detail about your projects and why you did what you did. Overall, I thought the phone interview went poorly because I was struggling to recall some fine details of my work. Apparently, the call went well because 3 days later I found out I was selected to move onto the next round. I STRONGLY recommend you send a powerpoint presentation overviewing your projects to your interviewer. I did this and I think it made a huge difference. Having visuals helps the interviewer understand what you're trying to explain. For the next round, they sent me a take-home project. I spent many hours on it and wrote up a paper. The assignment was very ambiguous and it could have been approached in at least two ways with different results. I asked them about this and they never responded; after I submitted my work, they said I failed to address some key components of the solution. Had they answered my initial questions, i probably would have been able to have done that. Oh well. Anyway, the recruiters were very nice and timely. SpaceX seems to move fast for the hiring process, which is good.