Goods&U is a full-scale e-commerce platform — storefront, multi-role admin panel, and a modular NestJS API — built Arabic-first for the Egyptian and Gulf markets. The backend is a 25-module REST API on NestJS 11 + Prisma 7 against Neon Postgres, with Redis (ioredis) for carts, inventory locks, and exchange rates; the frontend is a Next.js 16 App Router application (React 19) with RTL-first Arabic UX, TanStack Query for server state, and Zustand-persist for client-critical state.

The hard problems were never CRUD screens — they were the stateful commerce flows: bilingual content stored to the database row and flattened per-request by an Accept-Language interceptor; prices stored in integer cents and converted EGP→SAR/AED/KWD on the fly by a currency interceptor reading Redis rates; carts that live in Redis for guests (x-session-id) and merge into the authenticated cart on login; checkout that locks inventory in Redis with TTL before creating an order, then routes to Kashier sessions, Stripe intents, or Cash-on-Delivery depending on the customer's country; and webhooks that are signature-verified, idempotent, and persisted for admin retry when they fail. A WooCommerce CSV importer ingests bilingual catalogs end-to-end — translating Arabic column headers, percent-encoding Arabic image URLs, re-hosting every image on Cloudinary, and upserting products instead of duplicating them.

I architected the whole system around correctness (Prisma transactions, integer-cent money, order snapshots) and honest UX (real-time stock, blended flash-sale pricing, country-gated payment methods).