I interviewed at Flexport through Triplebyte. Flexport only hires "Engineering Generalists." They don't really care if you have a specialty, a strength, or a passion; they just want generic engineers. They are a lot like Google, Facebook, etc., in this way, but they are nowhere near the same scale, so it's an interesting decision, in my opinion. Their interview process reflects this. All their technical interview questions were totally generic: algorithms and data structures, CS101 stuff. If you are a passionate front-end engineer or want to specialize in something specific, this is not the place for you.

Question involving performing operations on a stack

Question involving a dictionary, probability, and randomization