Hello PA
I am sure that in order to be employed as a pilot in Brazil by the Big guns like TAM, Goel and Varig or by any other legitimate Airline in Brazil then you must meet the following basic criteria.
1, Be a holder of a Brazilian Passport
2, Speak and Write Both Portugues and English
3, Must pass thier various Psychometric tests
The above mentioned criterias is what I know of through my research on the Brazilian Aviation Industry, I am sure some natives may correct me if I have said anything wrong or they may add more things that I do not know of, But either way good friend Best of Luck and May the angels of the Sky get you a Job where ever man.
regards
WA