I have worked for one client who needed same service.
Project Title 1 : Rakuten product data bulk upload created from our existing data
Project Title 2: Amazon, eBay, Rakuten Bulk Listing & Account Management Expert Wanted
They were very pleased with my service and I beleive you will like me to work in this project too. I have worked with Rakuten US, UK platforms along with Amazon US, UK, and other channels. I can add variation options into your listings and can also optimize for better SEO. I believe I will be perfect fit for this position.
Actual, deadline will earlier than proposed. Feel free to contact and discuss further.
Regards,
Imtiaze