Full-Stack Digital Storefront Build

I need a modern, fully responsive e-commerce website dedicated to selling digital products—primarily downloads or license keys. Once a customer completes checkout, an automated email must deliver a secure download link, so that flow has to be seamless and reliable. Core requirements • End-to-end development: frontend, backend, database, and an intuitive admin dashboard for products, orders, customers, and inventory. • Cart, product search and filtering, and user authentication. • Single active payment option at launch: bank transfer. (Please architect the code so additional methods such as cards or PayPal can be plugged in later without major refactoring.) • Fast loading, fully responsive layout that looks and works great on mobile, tablet, and desktop. • Clean, well-documented code that follows best security practices, including input validation, encrypted credentials, and HTTPS readiness. Acceptance criteria 1. A customer can browse, search, add digital items to cart, pay via bank transfer, and automatically receive an email with a unique download link. 2. Admin dashboard lets me create/edit products, track orders, view customers, and manage stock of license keys. 3. Site passes Google Lighthouse performance score of 90+ on mobile and desktop. 4. Codebase is handed over in a private Git repo with setup instructions and brief documentation. I’m flexible on the tech stack—React, Vue, or another modern framework on the front end and a reliable REST or GraphQL API on the back end are all fine—as long as the final result meets the criteria above.