Hi,
Shopify is one of Popular and my favourite working Platform. I am ready to customization in the add to cart/checkout process.
I have built my skills proficiency using - Shopify, Wordpress, Woocommerce, PHP, HTML, CSS, Bootstrap, Javascript, Responsive and Graphic design.
This is my profile link you can check my review and portfolio: https://www.freelancer.in/u/rapidwebhub?w=f
If my skills and experience match to your requirements then feel free to contact me at your convenient time.
Thanks & Regards
Rapid Web Hub