Multivendor Ecommerce Website & Mobile Apps

I’m launching a full multivendor platform for physical products and need the entire ecosystem—web storefront plus native apps for both iOS and Android.

Core scope
• Modern, responsive website that lets multiple sellers register, list, and manage their own inventory.
• Native Swift/Objective-C and Kotlin/Java apps (or a proven cross-platform stack such as Flutter or React Native) that mirror web functionality and share a single backend.
• Central admin panel for me to approve vendors, curate listings, run promotions, and pull analytics.

Must-have features
1. User reviews and ratings tied to orders.
2. Wishlist functionality that syncs seamlessly across web and mobile.
3. Individual seller dashboards showing sales, stock levels, payouts, and traffic.
4. Excel sheet integration: every report—sales, commissions, payouts—and every product list must be exportable to .xlsx, and bulk uploads/edits must accept the same format.

Data architecture and tech are flexible as long as they support high concurrency, fast page loads, and straightforward API endpoints for the mobile apps. Please outline your preferred stack, any off-the-shelf modules you’d integrate (e.g., WooCommerce + Dokan, Magento Marketplace, or a custom Laravel/Node solution), and realistic delivery milestones from MVP to production.