Was pretty straightforward, the engineer was pretty chill and introduced himself a bit at first and said why he wanted to interview me (our similar backgrounds and what stood out on my resume). He then asked me a few questions about project work I listed on my resume and then he asked technical questions based on what I described from what I've done. He was working in the turbomachinery department at spacex and interestingly enough he asked about some aircraft restoration work I've done (was listed on resume). When I mentioned a few technical terms, he asked me technical questions such as why an aircraft would have such a design/shape and a few questions on the equation for lift and the types of pressures. I figured it was all pretty relevant since his department does heavy fluid/CFD work with the actual rocket turbomachinery. What kinda sucked was that the recruiter told me to study up on the rocket engines since this was the turbomachinery department (boy did I study about those merlin/raptor engines and fuel cycles!) and in the end I wasn't asked anything about them. No biggy though, never know what spacex exactly has in mind when interviewing students :)