Merchandise management system for online retail wanted

We are a small start-up company and will be active in the online retail sector. We would like to sell our products via our webshop as well as via internet platforms such as eBay, Amazon and home24.de.

The system should fulfill the following requirements:

• Quotation creation and order entry, with the possibility to add a photo with the item description
• Delivery bill, invoice
• Stock movement control (incoming, outgoing)
• Item management with detailed description and photo storage (as mentioned above)

We are looking for a system that automatically transfers the articles and all information to the online store and automates the information, e.g. when the product is ordered in the online store, the order should be immediately transferred to the order module and all corresponding actions (print delivery bill, print shipping label, etc.) should be triggered. When the goods are dispatched, the information is synchronized with the web store with regard to stock levels.

Ideally, the software should also have an interface to eBay and Amazon or other well-known online trading platforms.