From the 18 years I've been working as a freelancer for projects of small and medium size. Most of them was making the use of plugins for Wordpress, and creating custom functions by modifying the operation of this CMS. I was in the development of electronic recharge system (only the administration, he was recharging system developed by the cell phone provider), where I did the paypal system for immediate collection. I was also working on a web application that simulates the operation of [login to view URL], which use graphics library with php. With wordpress I have done personal work, using the wordpress core for modifications. Working with codeigniter I was in the preparation of a hotel project, my job was in the back-end, with a little ajax activity in the front-end. Now with 22 years, handling programming languages like Java and Python in the web side, javascritp (jquery, mootols, jquery ui) on the front-end