Digital Software Store Development

I need a straightforward e-commerce site focused exclusively on selling downloadable software. The store must guide customers from product page to secure checkout and then immediately deliver the download (or licence key) without manual intervention on my side.

Core requirements
• Digital-only catalogue: no physical goods, just software products.
• Secure payments: card, PayPal, and at least one additional option (Apple Pay, G Pay, or Stripe-powered wallets).
• Automatic fulfilment: once payment clears, users receive a unique download link and/or licence key by email and in their account area.
• Customer accounts: buyers can log in, re-download previous purchases, and view order history.
• Basic marketing tools: discount codes and an opt-in mailing list integration (Mailchimp or similar).
• Clean, modern UI that works on mobile first.

Deliverables
1. Fully functional live website on my domain with SSL enabled.
2. Admin dashboard where I can add or edit software products, prices, and licence keys.
3. Written hand-over guide covering routine tasks (adding products, issuing refunds, generating reports).

Acceptance criteria
• Test purchase proves payment gateway, automated email, and download link all work end-to-end.
• Page-load scores of B or better on GTmetrix for both desktop and mobile.
• No console errors in Chrome DevTools on launch pages.

If you have off-the-shelf plugins or frameworks that speed this up, let me know in your proposal—as long as updates and security patches stay simple for a non-coder later on.