Content Management Web App Development

I want to build a brand-new web application dedicated to content management. From an empty repo to a browser-ready product, the goal is to provide authorised users with an intuitive interface to create, edit, organise and publish text, images and other media without touching code... (Budget: $250 - $750 USD, Jobs: AngularJS, Backend Development, Content Management System (CMS), Django, Frontend Development, JavaScript, Python, Web Development)