Posting this on Github is a brilliant move by the NSA, and it showing up on HN amplifies it even more.

It's certainly not the first thing they've released (selinux, for one, and then all the other repos in the account), but this repo showing up on HN, with a prominent call-to-action to look at a career with them, is a great way to target the applicants you want ("those who would find this project interesting, because it's just the sort of thing we need them to work on")

Atlassian used to do (maybe still does) this in bitbucket if you open dev tools - a link to their careers page shows up