Management Events brings together 20 000 top-level executives and solution providers events organized in eleven countries. We were selected to deliver a mobile web app and back-office system responsible for the entire event management process. The back-office system features a customer management (CRM like functions) and event management modules. We have used the following technologies: Bootstrap3, Backbone, PHP Yii2 Framework, MySQL and we have developed a REST/JSON API. In addition, we have created a mobile web app for customer data management – event agenda, book meetings and other features. The solution is based on HTML5/CSS3 and AngularJS.