I led the core architecture of a UK wholesale marketplace supporting 500K+ suppliers, 700K+ product listings, and 220+ categories — with OpenSearch, Redis caching, and AWS infrastructure. If you're building a B2B marketplace, supplier directory, or wholesale platform, I can help you design and build it to scale from day one — not rebuild it later. What I bring: End-to-end marketplace architecture (Next.js / Node.js) Multi-vendor supplier dashboards and onboarding Subscription and tiered listing monetisation High-performance search and filtering AWS scalable infrastructure setup