Website for selling courses

I am looking for a web developer to create a professional website for selling courses to customers. The focus of the platform will be on professional courses, and I have existing content that would need to be implemented. Furthermore, this website requires a payment gateway integration, making it easier and secure for customers to purchase courses offered on the site. The developer should be able to create a unique design that is visually appealing and functional on both desktop and mobile devices. This website also needs to be user-friendly and provide customers with a great experience when navigating the site. Responsive customer service and support will be needed as well, so the developers must be capable of creating a system that easily deals with any customer inquiries. Finally, the website must have the optimal amount of SEO options to achieve high rankings in the search engine results and ensure good visibility for potential customers.