At the start of each month, the automated "whoishiring" [1] user creates
a few hiring-related submissions. You can find the most recent in the
"submitted" link of the user profile [2]. In the main "Who Is Hiring?"
submission [3, most recent] every month, companies usually list their
location and whether interns are wanted.
[1] https://news.ycombinator.com/user?id=whoishiring
[2] https://news.ycombinator.com/submitted?id=whoishiring
[3] https://news.ycombinator.com/item?id=11012044