They may not all be 'tier 1' companies (I just made up the phrase 'tier 1' - 'top tier' may have been better), but there's a commonality to many of these - they're largely well-known names in many communities.

I knew Google, Facebook, Amazon, Samsung, Cloudflare, appdynamics, DO, openx and thoughtworks without even batting an eye - the others sound familiar, but I can't say definitively if I know what they do.

"Midwest-city tool and die cutting" probably needs someone with this person's skills just as much, perhaps moreso, than digitalocean needs yet another devops guru.