Dropshipping Integration & Custom Website

I run a dropshipping business built around the catalogues of Baapstore and Snazzyway and now want everything running from a single, fully-branded hub. The site itself must carry a unique design that reflects my brand, not a stock template, and it has to connect seamlessly with both Amazon and Shopify so I can list, sync and fulfil across those channels without manual copy-pasting.

Core functions I need in place
• Order processing – automatic import of every new sale from my site, Amazon and Shopify, plus status updates pushed back to each channel.
• Inventory management – real-time stock sync with Baapstore and Snazzyway to avoid overselling.
• Return management – an interface where I can approve, track and close returns in one place, with notifications flowing back to customers on every platform.

I am open to whichever tech stack makes these flows rock-solid (custom API work, WooCommerce plugins, Shopify app connections, etc.) as long as it keeps future scaling in mind.

Please outline how you would:
– integrate Baapstore and Snazzyway feeds,
– link Amazon MWS/SP-API and Shopify,
– craft the bespoke front-end design,
– and deliver testing to confirm orders, inventory and returns all sync perfectly.

If you have live examples of similar multichannel dropshipping builds, share them so I can see your approach in action.