Well, Brazil needs engineers, especially Petroleum, Naval and Chemical.
They will also pay you very well for Naval engineering, easily more than 100k dollars a year.
But although it's not an African country(although they are all considered third world...), it's still a lot worse to live in than the US.
No, there are no monkey in the streets(I bet there are not many monkeys left at all), health care is just as good as in the US(if you have the money since it's VERY expensive, if not you are going to die in a dirty public hospital)...
But the main problem is that it's just violent, there are tons of gangs and the police is not as effective as in developed countries.
That in the big cities of course, if you are going to live in the Amazon, you're going to live in modern day stone age. And life will be incredibly short.