UX/UI Design for Web Application

We are developing a SaaS application which shall be used by restaurant owners to publish their menus in the web. Additionally the menus shall be accessible by QR codes allowing restraurant visitors to easily get access to the menu.
The web application is supposed to be pretty simple, however we are looking for an exceptional design.
The main screens will be:
- Home page = welcome screen for unregistered users
- Screen or multiple screen for entering the data of a restaurant owner
- List of menus of a client (each menu is represented by a pdf document and/or further information and documents)
- Edit screen for a menu
- Settings screen
We are looking for an experienced UX/UI designer who supports us with this project and possibly further projects.