I'm consistently surprised with Etsy engineering. (I guess that means I am not updating.) For what appears to my eye to be a rather generic "e-commerce marketplace" (my only visibility is regretsy) they really do a lot of big engineering projects.
I would have expected that a public company in this position would scale back engineering since it doesn't, at first glance, seem to be directly relevant to their business (they're not a tech company). How does a company end up with "good" management that keeps the tech so strong?