JavaScript HTML5 developer needed for Dashboard & Front-end Updates

We have an existing HTML5/JavaScript code which is the Dashboard user interface for our management solution. We need to add a few basic features to it which includes: (a) adding more buttons to perform other AJAX calls to our back-end; (b) filtering a list upon request to show active or inactive elements in an existing list and (c) adding two extra screens with some controls on it using existing layout and code. Code uses jQuery and Bootstrap elements, requires no page loading and constructs UI elements dynamically as needed. Developer will have access to all HTML5/JavaScript code and AJAX interface documentation. Mockjax or similar must be used for testing prior to deliver. At the end an FTP folder will be supplied to test the code with the back-end. Please apply with previous work and if you can start immediately.