usually maids, nannies are Burmese. There is a guest worker category for them, but if westerners were allowed to do it there is a prohibitive high minimum wage by nationality. There are agencies that recruit teachers for schools. Possibly one of them might sort a deal with a school to hire yiur teacher for you. Be careful not to get scammed though.
I filed my USA tax returns by scanning and emailing to my florida postal shop then they send by normal domestic mail. US doesn’t require original signature.