Consider hiring remote if possible from South American countries like Argentina; just don't go super cheap on the salary, $100-150k/yo still is a lot to us and I'm sure you can get some really good engineers, PhDs, whatever with that salary. You can go lower if you don't need expert-level.

I'll not apply because I doubt I'm qualified but if you have a link with the job posting I'd be glad to share with my circle.