Our new eCommerce venture must run smoothly across Shopify, Amazon, Walmart, Etsy, Mercado Libre, WooCommerce, and eBay without anyone copy-pasting data or correcting stock counts by hand. The immediate priority is end-to-end order fulfillment and shipping automation—pulling incoming orders from every marketplace, routing them to the right warehouse or 3PL, printing labels, pushing tracking numbers back, and closing the loop with each channel’s customer. Because no inventory system is in place yet, the project also needs a fresh, centralized stock-control layer that can later handle product and price synchronization, invoicing, and payments. I want to see how you would wire everything together—whether that’s native APIs, middleware such as ShipStation, Linnworks, or custom connectors in Node.js, Python, or a no-code platform like Zapier/Make. Feel free to propose the tools you trust as long as they can scale and keep data in real time. When you reply, please outline • the architecture you recommend (key APIs, data flow, and any off-the-shelf hubs or micro-services) • the milestones and realistic timeline to reach a production-ready rollout • your pricing model—hourly or fixed—and how you handle post-launch support If you’ve delivered multi-platform eCommerce automation before, include a brief example so I can gauge fit. Look forward to seeing how you’ll make every order move from “placed” to “shipped” automatically, with room to grow into full inventory and financial automation once the core flow is live.