I am American
In that case just register yourself as a dzielnosc gospodarcza and you're good to go: you can work anywhere.
At the moment it's looking like business English and one-to-ones because the semester has already started, so finding work at an 8-4 school may be tricky.
Tricky? Try 'pretty much impossible'! But get your CV out and start looking for work. I'd suggest Lang LTC, ACT, Archibald, Worldwide and Mike Mills (but those are just off the top of my head and I have been pretty much out of the teaching 'game' for five years).