n8n.io Bookkeeping Workflow Creation for Exact Online

I'm looking for an experienced freelancer with expertise in n8n.io to create a workflow that sends sales entries from my 6 sales channels to Exact Online using the n8n package: https://www.npmjs.com/package/n8n-nodes-exact-online.

Sales Channels:
- Mollie: https://www.npmjs.com/package/@digital-boss/n8n-nodes-mollie
- Amazon: https://developer-docs.amazon.com/sp-api
- Kaufland: https://sellerapi.kaufland.com/?page=rest-api
- Bol.com: https://api.bol.com/retailer/public/Retailer-API/index.html
- Cdiscount: https://developer.octopia-io.net
- Home24: https://developer.mirakl.com

Key Requirements:
- Mollie has a native n8n node.
- The other 5 sales channels have API endpoints.
- The workflow should collect order data from each sales channel and send it to Exact Online in the required structure.

The data to be sent should follow this structure:
{
"Journal": "fixed value",
"Customer": "fixed value",
"Description": "",
"PaymentCondition": "",
"YourRef": "",
"EntryDate": "",
"PaymentReference": "",
"SalesEntryLines":
{
"GLAccount": "fixed value",
"Description": "",
"AmountFC": ,
"VATCode":
}

}

Important:
This workflow needs to handle all possible order statuses:
- Paid
- Refund
- Partial refund
- Cancellation

Additional Information:
I have a self-hosted n8n.io instance.

Qualifications:
- Proven experience with n8n.io and Exact Online.
- Strong understanding of APIs and workflow automation.
- Ability to create scalable and maintainable workflows.

To Apply:
Please provide details on your previous experience working with n8n and Exact Online, along with your experience integrating the specified sales channels. Also, let me know when you can start.

Thanks!