I was sent a take-home assessment about a networking question. I had a technical interview, and there were two more rounds after that: one more technical and one behavioral.

For the technical interview, I was asked an easy question with follow-ups on it, which made it a little harder over time. It mostly involved optimization, which I was able to do. They still gave me a vague reason for rejection, lol, but it's totally understandable that they may be looking for someone more skillful.