sub.store is a service marketplace where users purchase credits and spend them on platform services. The client needed the entire backend and business logic built from scratch: authentication, a credit economy, payments, an admin panel, and third-party integrations.

The project had a clear product vision but no working implementation. The client needed a robust platform that could be tested with real users and real orders quickly, with enough admin control to manage pricing and users without touching code.

I built out the full platform on Replit with Supabase as the database. This included email-based authentication with verification via Mailchimp (with custom domain DNS setup for branded email sending), a credit economy, and a service catalog where credits are deducted on purchase. The admin panel lets the client manage service pricing, view users, and track orders, all without code changes. I also integrated a Discord bot and Google Sheets to support the client's internal workflows.

The client's team ran live testing with real orders during development, and I iterated on bugs as they surfaced in production.

The platform went live and processed real orders during testing. The credit economy, payments flow, and admin controls all worked end-to-end, with the client's team actively using it to validate the business before a wider launch.