Web-Frontend for an existing erp-like backendsystem

I am looking for an frontend designer for a product management system. The system is kept quite simple. The backend is already done and is based on mySQL and PHP. No backend work is needed. Basically it is showing/editing/inserting products/orders/customer based on REST-API and JSON responses, have a look at [login to view URL] for an example response of backend. I will supply a documentation of the REST API to edit, add, update, etc. products and customers. In more general what has to be done is a frontend, which enables us to do the following (as mentioned backend is done and will be provided by us): - List all products/customer/supplier/orders, returned by backend - Update old products/customer/supplier/orders - Insert new products/customer/supplier/orders - Search functionality - Pagination Have also a look at our first UI prototypes, these are just very early prototypes, but should make the idea clear. [login to view URL] It does not have to look this way nor do we dictate the final layout/color-scheme/etc. This is just a simple first prototype for chosen sub-sites.