Hi,
I have analyze your requirements and I am interested in your job post for a web developer to add more DB to your Opencart store 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 am developing extensions as well for OPENCART.
Thank you for taking the time to read my application. Please let me know so I can start it ASAP.
Thanks & Regards,
Sumanta