- Server-side: PHP + frameworks (Yii/Yii2, Slim, ZF2), Ruby on Rails - Client-side: jQuery, AngularJS, AJAX navigation, HTML5, adaptive layout, browser`s extensions - Databases: MySQL, SQLite, PostgreSQL, SPHINX - API: SOAP, REST, XML-RPC - CMS: WordPress, OpenCart, Drupal, Joomla - Services integrations: Google maps, Payment systems, Google Analytics - Additional skills: Hi-load optimization, system administration (Linux)