My question is, will I be able to find work and live in poznan without previous teaching experience and just the TESOL qualification alone.
Should be easy enough, Poznan is a big city with a lot of schools.
like you say myself and my partner had some concerns about finding work during the summer, if the worst comes to the worst I have considered staying in the UK until the new academic year, but I really want to go in june or july.
To be brutally honest, you won't find anything worthwhile in Poznan during the summer. Most schools effectively close down over the summer - they might have a few classes for those that really want to learn, but really, not much will happen. The best bet is to come in August - people are hiring then, ready to start the new year in September.
I have looked up some English schools within poznan on the internet and some of them seem to be asking for 1 or 2 years experience teaching.
They usually do ask for that, but at the same time, a lot is placed upon being available and ready to work NOW, so to speak. To be honest though, a lot is about appearance and personality - I know teachers here who have got jobs by simply walking in with a CV and saying 'I want a job'.
But in all honesty, I would wait until you're here before looking for a job. You simply cannot get the 'feel' for the city over the internet. I live in Poznan, and it seems most people got their jobs by actually going and handing in CV's and talking to people. Of course, once you're established, you can look for work well in advance of the start date - but for a beginner, I'd recommend just hitting the ground after doing the CELTA. You don't even need the CELTA in all reality - although it does depend what kind of teaching job you want.
But...as I'm here, and teaching, feel free to ask any questions. What I know...
English Unlimited - Odd school. They're based in a big huge old building, yet I think they do most of the teaching elsewhere.
Top English School - I think this is a Callan school, though could be wrong?
Native English - I went past here a few weeks ago. They didn't appear to have much in the way of teaching facilities, but they apparently only use native teachers. Located in a slightly dodgy place, though.
Haven't heard of the others, though.