I need a complete multivendor e-commerce platform that lets independent sellers sign up, list items, manage orders, and receive payouts while giving me full administrative control over listings, commissions, and dispute resolution. The build should be responsive, SEO-ready, and scalable so I can start small and grow without rewriting the foundation. Core expectations • Separate dashboards for admin, vendors, and customers, each with role-appropriate permissions • Flexible commission engine: flat rate, percentage, or per-category rules, editable from the back end • Modular payment gateway layer so I can switch on or off card processors, PayPal, or manual bank transfer without code changes • Modern UI/UX that adjusts smoothly from mobile to desktop, including accessibility best practices • Clean codebase using a mainstream stack such as WooCommerce + Dokan, Magento Marketplace, or a comparable Laravel/React solution—whichever achieves faster future maintenance and plugin expansion • REST or GraphQL endpoints exposed for future mobile-app integration • Security hardened (input validation, rate limiting, SSL, GDPR-compliant data handling) Acceptance criteria 1. New vendor signup, KYC approval, product upload, and first payout flow demonstrated end-to-end on a staging server. 2. Admin can change global commission and see it reflected instantly on new orders. 3. Site scores 90+ on Google Lighthouse for performance on both mobile and desktop. 4. Complete handover of source code, database schema, and a short video walkthrough showing major admin functions. I will supply branding assets and hosting credentials once the framework is chosen. Please package your work so future updates—theme tweaks, extra gateways, or new shipping modules—can be added without touching core files.