You apply online and provide all information as well as resume. Started with a HR phone screen, then a group interview style call with technical managers from the team you are applying to. If you get through the phone calls, you get invited to site for a technical presentation and review.
Interview questions [1]
Question 1
Questions about a project you worked on and how you solved a specific issue.
I applied online. I interviewed at SpaceX (Redmond, WA) in Oct 2020
Interview
Initial phone with recruiter followed by half hour call about resume with hiring engineer. Technical presentation on past project, emphasizing data. Interrupted repeatedly during presentation and never heard back from recruiter.
Interview questions [1]
Question 1
Design an experiment to measure the effect of laser intensity on lithography features.
I applied online. I interviewed at SpaceX (Redmond, WA) in Jul 2020
Interview
3 interviews progressively getting more specific. The last interview was a powerpoint presentation on the most complex project I have worked on. The other two interviews are mainly questions about the projects you've worked on and why you want to work at SpaceX.