I am fullstack developer and can build and upgrade your admin panel i can apply acl on your website and secure your admin panel and create multiple functionality like menu, banner,datatables,reports stats,advertisments,tag,categories etc for you with full backend or front end functionality
i can build it in php framework (codeigniter, laravel,yii or any other which you will like)
if you want custom core solution we also can build in
if you want to use CMS we also built it in that CMS because we have full grip in programming
Kindly come in chat for further discussion on your work.