Relativity Space Software Engineer interview experience

After an initial phone screen, I did two back-to-back technical phone interviews, and then I went straight into an onsite.

Across the calls, the questions repeatedly circled back to core engineering fundamentals—things like fluid mechanics, heat transfer, thermodynamics, and structural mechanics—paired with prompts that pushed me to explain my approach rather than just give definitions. I also had a resume-focused portion where I had to walk through my experience and describe it in a way that connected to the underlying principles they were probing.

By the time I reached the onsite, it felt