Modern Web App UI Redesign

I have a functioning web app , yet its look and feel still resembles an early prototype. I’d like a seasoned UI designer to review what is there, propose a clear design direction, and then rebuild the experience so it feels polished, contemporary and intuitive... (Budget: $750 - $1500 USD, Jobs: Figma, Graphic Design, Interaction Design, Prototyping, Usability Testing, User Interface / IA, UX / User Experience, Visual Design, Web Design, Website Design)