To Work while in the state, you need to have a work allow (Autorização de Trabalho) in the Ministry of Labor. To obtain it, you will need to be sponsored by an employer prior to coming into the state. The entire process of employing non-Brazilians can be a rather complicated https://buildwallpro.com/userinfo.php?from=space&action=view&user=teena_wren_451691&op=userinfo&name=Your_Account