Hi,
I have analyze your requirements and I am interested in your job post for a web developer to fix Opencart issue and it can be done as per your expectation. I have experience in the specific field your are looking for. Any kind of modification can be done here. I have done several OPENCART based online store having lots of modification in pages like Product, category, Cart page etc. So it would not be a difficult thing here. I am developing extensions as well for OPENCART.
Thank you for taking the time to read my application. And kindly revert me with your comments on the same.
Thanks & Regards,
Sumanta