I built and open-sourced a full-stack eCommerce platform using Next.js and Nest.js, designed as a modern monorepo. The project gained 130 stars and 45 forks, validating its architecture and usefulness to other developers.

Most eCommerce starters either:

gloss over real auth/cart complexity, or

are too fragmented to learn from as a system.

I wanted a production-style reference that handled real-world concerns end-to-end.

Monorepo architecture with pnpm + Turborepo and shared TypeScript contracts.

Next.js frontend with App Router, protected routes, admin panel, and a dual-mode cart (guest → authenticated merge).

Nest.js backend with JWT auth (access + refresh rotation), MongoDB models, Cloudinary uploads, and Stripe/PayPal payments.

AI-powered product tooling: a conversational product creation agent that generates product data, images, and brand assets, then persists validated results.

End-to-end validation using Zod (frontend, backend DTOs, AI tool inputs).

Demonstrates full-stack ownership across auth, payments, cart logic, admin flows, and AI integration.

Shows architectural taste (shared types, modularity, clear boundaries).

External validation via adoption (130★ / 45 forks) rather than claims.

A production-grade open-source reference app used and forked by other developers, showcasing practical full-stack and system design skills.