I work as a Web Developer using PHP and databases like MySQL, PostgreSQL and Oracle. I also have very interest in Microsoft Excel features such as Pivot Table, Validation Rules and Conditional Formatting, I've worked as Excel Instructor for 10+ years. I'm from Brazil, my English is intermediate/advanced but not fluent. I like helping people resolving problems and creating solutions that work well and simple. Graduation Degree in Computer Science since 2007.