The things that will actually allow you to hire great engineers are things that are very hard to quantify, as listed in this article:

I’m swapping out Lage der Nation whose popularity has led them to lose focus and believe in their own hype for FAZ Einspruch.

The origin story of Notion is pretty wild but all of the recipes in it for deep collaboration and radical iteration make a lot of sense. When I briefly tried out Notion, I was struck very much by how tight both its vision and its execution were.