Hello and Sawasdee khrap,
There are so many jobs for English teachers in bigger cities like Berlin that I'd like to let you know that it's pretty easy and straightforward to find a decent job.
The pay is great and cities like Berlin are way better than Beijing in my eyes.
A friend in Germany just recently asked me if I wouldn't like to manage a language school and after looking into it, I found out that teaching English, computer, or other subjects in English is booming now.
I'll post some contact addresses soon, just trying to find them all in English.
Berlin is a great city and why not making 4,000 Euros a month?
Should you have a question how to get a job, please feel free to post here.