Sorry to bid, I am not Brazilian/Portuguese, but if you allow I can use translator to complete your task.
I am working through freelancer.com since 8+ years and having place in top 2500 ranking.
I worked in the following sectors -
=> Website Design & Development including - Responsive, Parallax, PHP and their framework (Like CakePHP, Laravel, CodeIgniter, YII, Zend, Aura etc.), WordPress, Magento, WooCommerce, Joomla, Prestashop, etc.
=> Mobile App Design and Development including iPhone, iPad, Android (Ionic, Corona SDK, Xamarin, NativeScript, ) and Native, Hybrid, Web Apps and all types of other phones like Samsung, HTC, Blackberry, iPhone, iPad etc.
=> All types of Graphics Design including banner, brochure, Infographics, LOGOS & Branding, T-Shirts Design, etc.