Hello,
Here I would like to confirm you that I will implement WooCommerce payment plugin in your existing website. For now wanted to check where I need to Implement payment API.
As I have extensive experience with Wordpress/Woo-commerce, PHP, MySQL, HTML5/CSS3/jQuery, I am also expert at theme development, plugin development, PSD to WordPress, customization of WP core for development of custom modules.
Regards,
Kaushal