web development - User order management system

Hello, I am looking for a Freelancer to polish and develop a full-stack website for me (React.js for front-end, Python FastAPI for backend, and PostgreSQL for Database). The website needs to be an user order management system type with a clear vision and a built-in product catalog. I have a specific design in mind and the framework has been built. I want to ensure my website has the necessary functions to support its management purpose. This includes an online payment system, user registration and a service catalog.