I applied online.
30 minute recruiter call, discussing past experience, a technical project (I forget if the recruiter chose one off my resume or let me decide which one to talk about, either way be ready for both possibilities)
Why SpaceX, and a handful of very basic data structure questions such as:
The following metrics were computed from 1 interview experience for the SpaceX Software Engineer role in San Francisco, California.
SpaceX's interview process for their Software Engineer roles in San Francisco, California is extremely selective, failing the vast majority of engineers.
Candidates reported having very good feelings for SpaceX's Software Engineer interview process in San Francisco, California.