Hello Sir/Ma'am,
Yes, I've similar working experience in Payment Gataway t& Yes, I can do this. I assured you I'll provide you fully mobile responsive.
I'm Full stack developer having experience in Wordpress/Woocommerce, Wordpress theme/plugin /template development, Wordpress API, WordPress e-commerce sites,Bootstrap, HTML5, CSS3, PHP/MySql.
Please come to chat so that we will discuss in more detail.