Invariably,
I agree with you about the Thai people and their hospitality. They're wonderful people!
Looks like Bangkok Air only accepts Thai Nationals. Check out the following web page.
http://www.bkkair.co.th/classify.htm
PBAir, however, is another option and they do take foreigners. They currently operate F28's but it appears that they're expanding their operations Internationally. More info can be found from their recruitment website.
http://www.jet-aviator.com/pilots.htm
Good luck!