I'm on a J-1 visa right now, but I leave the US in 16 days. I have a job offer to come back and work here, can I apply for the H2-B visa before I leave the US? So that I could come back right away? Or don't even needing to get off the the country?
Assuming you have no home residency requirement, you can start the H-2B process even while you are here in USA.