Multi-Platform Online Store Setup

I need a developer who can create a single online store that presents my physical goods on three fronts at once—my own website, eBay, and Amazon.

Core requirements
• Build or configure the main storefront on a user-friendly CMS (Shopify, WooCommerce, or a platform you can justify).
• Sync listings to both eBay and Amazon so stock levels, titles, images, and pricing stay consistent everywhere.
• Implement inventory management that updates automatically when a sale happens on any channel.
• Add a secure payment gateway on the website (PayPal, credit/debit cards, plus any native options the chosen CMS offers).
• Enable customer product reviews that display on my site.

Nice-to-haves if time permits: simple sales reports, shipping-label integration, and a clean responsive theme.

Deliverables
1. Live, fully functional store on my domain.
2. Active, synchronized eBay and Amazon listings pulled from the same catalog.
3. Admin dashboard walkthrough so I can add products and track orders on my own.
4. Written hand-off doc covering the key plugins/apps, credentials, and update steps.

I already have product photos and descriptions ready. Bring your best practice on channel integrations, and let me know which CMS or tools you recommend and why.