Web and mobile developer: python (nativo, django and Google App Engine), ruby, java (plain and Android), nodeJs, php, js, jQuery, ajax, as, flex, xml, MySql, noSql, json.
Front-end developer: html, xhtml, dhtml, css3, html5.
Back-end develop and setup of environments with multiple instances and separate requirements for back-end and front-end, including load balancing, cdn and cloud.
Amazon Services: Elastic Beanstalk, AMI, S3, CloudFront.
Search client for Apache Lucene y Solr.
Setup and develop of cache strategies for back-end and front-end requests (memcache, memcached, apc) for high traffic sites.