Hub marketplace

We want to develop a system for our agency where we will control our customers' e-commerce through a single system:

We need the integration system with marketplaces:
amazon
B2W
B2W Delivery
new
Carrefour
Free market
Shipping Market
Buscapé Marketplce
Zoom Marketplace
Dafiti
netshoes
Walmart
Ricardo Eletro

Integrations with ERP:
bling
Small

Integration with logistics systems:
Post Office (Sigep Web)
frenzy
intellipost
jadlog
jamef

Integration with e-commerce platform
Integrated Store
Tray
Xtech
Cloudshop
And with
Magento
Woocommerce

The idea is to be able to manage everything from e-commerce using a single system, such as tasks that the system must do:
Complete Product Registration
Publish product registration in all store locations: Marketplaces, ERP, Virtual store
Complete order management of all sales channels
Issuance of Invoice, via Bling or Tiny
Picking and Packing for order processing
Order status update across all sales channels with shipping tracking
Inventory control with stock update for all marketplaces and erp
Integration with Post Office SigepWeb
Helpdesk system, where the company will receive contacts from marketplaces and/or your store's contact email.
EDI integration for carrier order tracking
Miscellaneous reports collapse
IT and Programming Category
Programming subcategory
What is the scope of the project? Create a new custom website
Is this a project or a job position? I do not know yet
I have, currently I have a general idea
Availability required As needed
Experience in this type of project Yes (I have already managed this type of project)
Payment Processor API Integrations (Paypal, Stripe, etc), Other (Other APIs)
Designer, Developer Roles

Category: IT and Programming
Subcategory: Programming
What is the scope of the project?: average change
Is this a project or a job position?: A project
I currently have: I have a general idea
Availability Requirements: As needed
API Integrations: Other (Other APIs)
Roles: Developer