Hire a Web Developer

The main thing that I'm looking for is a web application, something similar to a portal that I can link up to my already existing webpage. The application will have a front side design where a customers can preview an EPS file design that I will create and upload to the database or they will be able to register to become a paid member, where they will be able to preview and print the EPS files that are in the database off of the browser either Google Chrome or Internet Explorer to their plotter. For an example of a plotter, it would be a 40" Roland GX400-CAMM-1PRO. On the back side of the application the admin, which would be me or who I ever give authority to login in, would be able to control memberships and be able to add EPS files to the database whenever they are ready.