Darius Wilson Prince

 Over 10 years of extensive experience as a Front - End UI developer in developing web applications based on HTML5, CSS, JavaScript, jQuery, AJAX, JSON, XML, Bootstrap, Angular, ReactJS, NodeJS.  Excellent experience and Knowledge in CSS preprocessors like LESS and SASS.  Wrote application-level code to add functionality to the perform client-side validation using JavaScript.  Extensive experience in using JavaScript libraries like jQuery and in developing Rich Internet Applications (RIA).  Strong experience in using AJAX for implementing dynamic webpages where the content can be fetched via API calls, using RESTful web services.  Proficient in Model View Control (MVC) design pattern and Test-Driven Development (TDD).  Experienced in AJAX, JSON with jQuery for request data and response processing.  Used Angular to create maintainable and testable single page application and implemented 2-way data binding and used ng-filters across the applications.  Expertise in React.JS framework to develop the SPA.  Knowledge of using flux architecture in ReactJS for building client-side web application.  Experience with middleware's using Redux-Thunk, Redux-Saga, Redux-Logger, Universal React Redux.  Developed Web API using NodeJS and hosted on multiple load balanced API instances.  Used Bootstrap framework and media queries for developing customizable and responsive web design for compatibility with different platforms and screen sizes.  Debugging applications in different browsers using Firebug, and testing applications using Jest, Jasmine, and karma, Mocha, Chai.  Knowledge in using NPM, Bower and Grunt for package management and installation.  Worked with JavaScript validations and developed Object-Oriented code.  Experienced with Linux system administration, DevOps and AWS cloud platform.  Strong understanding in implementing AWS solutions using EC2, S3, RDS, EBS, Elastic Load Balancer, Auto-scaling groups.  Experienced in implementing in search engine optimization (SEO) for