Billing System Overhaul

I have a billing suite for a web hosting company written in perl. This project is to modernize the look and feel of the client facing portion of the website. The new look and feel has already been written, but is static. This project is to connect the new look and feel with the database and various api calls ([login to view URL], onlinenic, cpanel, etc) to make the pages dynamic and make it actually work. Portions have already been coded. The login page and authentication part has been written. The dashboard has been created. The other pages need to be created. There is a page for: Domains (all domains are listed here, api calls to onlinenic for various functions) Hosting (hosting accounts listed here, api calls to onlinenic as well as local cpanel servers for functions) Invoices (all invoices listed here) > Pay invoice (api calls to paypal, bitcoin, [login to view URL]) > View invoices SSL Certificates (api calls to onlinenic) Users and roles 2 factor authentication (api calls to free 2 factor auth service, google perhaps) Support tickets Knowledge-base About 15 pages in total. Some buttons and features will need jquery to function properly, so jquery knowledge is required. Pages make use of CSS, bootstrap, and font awesome so a knowledge of all of those is also required. Pages are written in PHP and can either be coded as a template with some kind of framework, of the php code can be placed inline without a framework. There is an existing database in mysql that will have to be worked with. Functionality, tables, etc can't be changed for the front end, otherwise the back end will stop working. Knowledge of: PHP Some Framework (optional) mysql Linux CSS Bootstrap Fontawesome Jquery/javascript is required.