Senior Full-Stack Developer to Build/Rebuild Our Custom Website & Ecommerce Platform

We need an experienced developer to build a custom web application / ecommerce platform for us — or rebuild and migrate the one we already have. Off-the-shelf themes won't cut it; we have specific business logic, integrations, and performance requirements. The work is a custom build, not a template drop-in. Depending on your background this could be a fresh build, a migration off our current platform, or extending an existing app with new features and API integrations. What the project involves: Custom back end (Laravel / PHP / MySQL) with a modern JavaScript front end Ecommerce or portal functionality: catalog, accounts, checkout or B2B ordering Third-party API integrations (payments, ERP/CRM, internal tools) Clean, fast, responsive front end — performance matters to us If a migration: moving data off the old platform with zero data loss Please share two or three custom builds you've shipped that are close to this — ideally with a live URL — and a one-line note on what you built and the stack. Point us to the project that best matches our problem, not just your longest list. We'll scope timeline and budget on a quick call once we've seen requirements.