The first round was both a leetcode medium AND a systems design, both expected to be done in an hour. This is frankly ridiculous and insulting to experienced developers. If you're not grinding leetcode, it's really difficult to get a complete working AND optimized solution. I was pretty impressed with myself I got SOMETHING that worked, knowing full well it wasn't optimal.
The systems design wasn't appropriate for a software engineering role, it was more appropriate for a devops/SRE role. And there was only 1/2 hour or so to do it.