To Operate while in the region, you should have a piece allow (Autorização de Trabalho) within the Ministry of Labor. To acquire it, you will need to be sponsored by an employer in advance of getting into the state. The process of employing non-Brazilians can be a rather complex undertaking; https://bookmarksmyweb.com/userinfo.php?name=Your_Account&user=tony.adam-451691&do=profile&mod=space&from=space