On top of having a brazilian passport, things with Brazilian ANAC is a nightmare. I am a Brazilian citizen converting my CPL from Europe. Everyone must do a Law exam in Portuguese before starting applying for the conversion.
On top of it, I've been waiting since February for the paperwork.... close to settle but haven't got my papers yet and we are talking about 4 months with all exams and check rides done, so not easy at all.
There is lot of work right now, but the market is very hard to step in since they are trying as much as possible to protect nationals... it's worthy checking once and a while to see if rules have changed for foreigners...