Hi,
I can definitely assist you with open-cart bug fixing and custom features, I gather you have an existing project please share the link so that I can review.
I have 11 years of experience in web development and I am an expert in WordPress, Drupal, Magneto, Weebly, PHP motion, Joomla, open-cart, woo-commerce, big commerce, etc.
let's connect over chat to discuss in more detail.
Best,
MK