Bottom line; virtually impossible, even as a volunteer for a much needed cause. Jobs in Thailand are even difficult for their own average people. If Thais are over fifty and seek work impossible. Even when somewhat skilled.
Remitly. I transfer from the US to Thai bank for .99 cents not sure cost over 500$ USD. Fast and efficient. Shows all transactions ever made. As soon as my account clears it is immediately sent and available to recipients account and ATM no matter time of day.