Hi Business Catalyst Expert here.
I ready job description and i would like to help you write AJAX for add to cart option and others features also can be done as per your requirement. as I have over 8+ years experience with Business Catalyst and customisation in Business Catalyst, Liquid, jQuery, Responsive etc... I offer 100% satisfaction guarantee.
we always use latest technologies to bring smile on customers faces, that's our goal.
My customers have been very pleased with my work, as evidenced by my superior feedback ratings.
Please note that YOUR 100% satisfaction is guaranteed. We value your feedback and will work with you until eternity to get you satisfied.
Thank you in advance for considering me for your project!