Hello,
As per your requirements for a payment gateway to your Shopify, let me introduce you with my services I am a developer who has working experience on Shopify and other eCommerce platforms. I have a strong knowledge of liquid programming language and can generate custom – tailored Shopify themes and alter pre – existing templates. I have also worked on numerous projects therefore have top notch command over HTML5, CSS3, JavaScript/Jquery.
You can also view my work portfolio in my profile.
Please reach out to me so we can have further understanding regarding your project.
Looking forward to your response