Don't agree with the other guys, there are numerous opportunities for working in Thailand exept being a teacher. However this is for high level positions like engineers and managers.
If you have a master degree and a international mindset then you have one chance to work in Thailand.
Incomes might be lower but you need to compare with the cost of life. Minimum salary for western expact is 50kthb per month. Can be much more if experienced profile. No need to speak Thai at this level. However you will need it a little bit for the daily life !
If you really want to make the move then you have to come in Thailand and search locally. Searching from abroad is unefficient. You need to enter the country business network.
Have a look at the Chambers of Commerce network and also some recruitment agencies.