diverse technologies
PHP
Custom PHP, Magento, Symfony, Laravel, WordPress, Drupal, Typo 3
.NET (C#)
Windows Azure, ASP.NET Web Forms, ASP.NET MVC, Sitecore, Umbraco, Classic ASP, Sitefinity
Front-End
HTML 5, CSS, JavaScript, jQuery, Angular.JS, Backbone.JS, React.JS, Knockout.JS, Sass/Less, Grunt, Compass, Bootstrap
Node.JS
Python / Django
Ruby
Java