I have 5 more years experience with Joomla 1.5-3.0. I developed components, modules, plugins, db architecture, modules for Magento. Also I have great experience with VirtueMart 1.5-2.0 - I created a lot of extensions (modules, plugins) to make life with VirtueMart easer :) I know PayPal API, PayPal Package API. Many times used AJAX with JSON to make website interactive. Also I have some knowledge in JomRes. Familiar wih Apache Solr. Used Git.