An unusual arrangement

Hello. I'm a teacher from NI living between Bialystok, Poland and Northern Ireland. I seek to work as a substitute teacher in Northern Ireland for around eight months of the year September to April from year to year and the rest of the time, including the school holidays in between, I'd be in Poland where my wee son is. Perhaps someone might like that kind of arrangement? I'd certainly be travelling light and basically living out of a suitcase.