API-Integrated Webshop Build

I’m looking for a developer who can deliver a fully-functioning webshop that talks directly to my supplier’s API so product data, stock levels, and prices stay in sync without manual uploads.

Core requirements
• Seamless supplier-API integration for automatic product import and updates.
• Logic for printcharge and discount calculations applied at checkout.
• Clean, intuitive admin area focused on:
– Easy product management (bulk edits, quick status changes, clear variant handling).
– Customer management (account creation, segmentation, basic CRM notes).
• Option to spin up customer-specific mini-shops inside the main store—each with its own branded front, restricted catalog, or customised pricing.
• Responsive front-end, secure payment gateway setup, and standard SEO foundations.

Platform
I’m open to WooCommerce, Shopify, or Magento—recommend the one you feel suits the above goals best and outline why.

Deliverables
1. Live webshop with API connection fully tested.
2. Admin documentation (short video or PDF) showing how to add products, manage customers, and create a new mini-shop.
3. Brief hand-over support to make sure everything runs smoothly after launch.

If you’ve built API-driven stores before, especially with custom pricing rules, I’d love to see examples.