Front-End Development: HTML/HTML5, XHTML, CSS/CSS3, Javascript, jQuery, AJAX, Less/Sass, ReactJS, Angular, Vue, Flexbox, BEM Back-End Development: Ruby/Ruby on Rails, Python/Flask/Django, PHP/Laravel, MySQL, ASP.NET, C# Content Management Systems: WordPress, Drupal, Joomla!, Expressions Engine Ecommerce Systems: Shopify, Prestashop, Magento, Woocommerce, ASP.NET Storefront Version Control: GIT, SVN, TFS