@Leya ******
In 2011. I was offered a position (of South East Asia Technical Manager) in my (same company, a multinational IT) in Bangkok, as a local hire, not an expat. We already had our home in Bangkok, used as a holiday home.
The problem was - I could not remain on the same money as in Japan, true, top of then Thai salaries for a non-director in Thai) , 120K THB a month + company car but it was still considerably less than with my same Japan job while the International school would be nearly the same cost. Turned it down, remained in Japan. Thai cost structure (no rent, own home, cheaper daily life) would have eaten that through the school fee. Bangkok Pattana was the school.
For visa, I would have been on a working visa, daughter and Thai wife are Thai nationals.