I applied through a recruiter. The process took 5 days. I interviewed at SpaceX in Jun 2015
Interview
Contact about the position via LinkedIn. Did initial interview with HR basic technical questions about material strengths, statics, dynamics, fluid dynamics, manufacturing economics, and manufacturing processes. Brush up on all subjects before interviewing. Had interview with managing engineer over the phone but declined go further because I didn't want to live in California being worked 14-16 hours a day.
Interview questions [1]
Question 1
Which materials have higher tensile strength and hardness; titanium, aluminum, stainless steel.
Some bending moment questions.
If you have a fluid going through a converging diverging nozzle, what will happen.