React Native & Web App Enhancement

We already have a working prototype built with React Native on the front end and a Python + PostgreSQL stack on the back. My goal over the next three months is to polish the mobile experience, refine the overall UI/UX, and steadily roll out new features... (Budget: $3000 - $5000 USD, Jobs: API Integration, Django, JavaScript, PHP, PostgreSQL, Python, React Native, React.js)