Hi,
As you are looking for some changes and improvements on existing website so please share the list of all changes which you want and i am sure to complete task with in relevant time .
Technology we work on :-Android, iOS and PHP , wordpress , shopify , magento , laravel , code igniter ,.net etc ...with all frameworks and design :-html 5 ,Photoshop , bootstrap, angular js ,JavaScript etc.
Looking forward to hear from you.
Happy to answer any question you may have.
regards
Shiv