I ended up interviewing for three different positions, two of them in propulsion engineering.

I applied online at the beginning of September and then attended my school's career fair. The recruiter was able to pull up my application. We had a 20-minute conversation about SpaceX, the intern experience, my previous work/research experience, and why I was interested in the company. Technical questions were asked about my experiences.

I didn't hear back until mid-October, when I interviewed for a build reliability position. After about another week and a half, I heard back that I did not get the position.

I was contacted again mid-November to interview for another position, this time in propulsion. The interview was technical and lasted about 30 minutes. I interviewed for a third position a week later. This interview was also technical and about an hour long.

I heard back a couple of days after the third interview that I had gotten the second position.

1. Various technical structures questions (stress/strain, fracture, pressure vessels).

2. Basic fluids questions (pipe flow, Bernoulli, converging-diverging nozzles, choked flow).

3. Basic rocket propulsion (know the thrust equation).

4. Basic heat transfer (types, basic problems).

5. FEA/CFD analysis questions (how can you verify your solution is accurate - residuals, hand calcs, etc.; how would you set up a fracture analysis in an FEA program; resolution of a boundary layer).

6. Questions about SpaceX (what are our engines and where are they used; what are our launch vehicles; what are our capsules, etc.).

7. For the first interview, some questions on PLM and SQL.

8. Technical and non-technical questions about previous work/research experience - make sure you know what you did (obviously) and can explain it well. Be prepared for technical follow-up questions.