3 phone calls, including 1 behavioral round and 2 technical screenings; 6 back-to-back rounds of on-site, including a presentation given to the whole team. Moved pretty quickly throughout the process (1-2 months).
The following metrics were computed from 3 interview experiences for the SpaceX Hardware Development Engineer role.
SpaceX's interview process for their Hardware Development Engineer roles is fairly selective, failing a large portion of engineers who go through it.
Candidates reported having very good feelings for SpaceX's Hardware Development Engineer interview process.