As interview processes go, it was too long (as all interview processes are - coding, system design etc so that's not their fault for following the herd) but it was easy. A decent grasp of Python, SQL etc should see you through the coding and a solid knowledge of AWS should get you through the system design. I declined the offer because despite being very clear on my comp ask in the very first interview, after a month and five interviews/conversations later I was offered a package 20% lower than my current income. So the whole thing was a massive waste of my time. All the tech folks I met were awesome though. They all seemed like really smart people.