Selling products online

I'm looking for someone to help me sell products online. I plan to use my own platform for this, and I have a specific niche and type of product in mind. I need someone who can provide product listing as well as customer service in order to successfully manage my online sales. This individual should be able to help me start selling online quickly, so that I can start seeing a return on my investments. If you have experience and knowledge in running successful eCommerce websites and products, I would love to hear from you. Thank you for your time!