Responsibilities- upgrade of the overall aesthetic of the software- inclusion of a module allowing audio/video chat between users- incorporation of plugins for speech recognition and synthesis- development of new learner performance visualizations- customization of features to support teachers and tutors- integration with other software frameworks (e.g. LMSs) and apps- migration of the database to data store and processing solutions optimized for big data- integration of WebView control into a native app framework, using either iOS (Objective-C/Swift) or Android (Java)Prerequisites- required: Linux, JavaScript, PHP, CSS, HTML, MySQL- optional: Git, shell scripting, C, Python, NoSQL- optional: native Android or iOS mobile app development using Java or Objective-C/Swift, and WebView integrationWe're especially interested in people who have added experience in game development, scientific research, mathematics, education, UI/UX design, QA testing, or sales and marketing.