Confidential client
ShopFlow: E-commerce Storefront & Admin
Catalog, cart, checkout, and admin inventory for a growing online retail brand.
E-commerce

Challenge
Problem space
A retail brand needed a faster storefront, clearer order status, and stock that stayed in sync after each sale as the catalog and checkout concurrency grew.
Business impact
Concurrent checkouts risked negative inventory. Category pages slowed as the catalog expanded. Support lacked a clear order timeline for customers and warehouse teams.
Solution direction
Atomic inventory updates at payment, performant catalog browsing, and an order status pipeline visible to both admin and customers.
Solution
Atomic inventory updates at payment, performant catalog browsing, and an order status pipeline visible to both admin and customers.
What we shipped
- Product catalog with search and filters
- Cart, checkout, and order tracking
- Payment integration
- Admin product and inventory management
- Order status pipeline for warehouse and support
- Promotions and discount codes
Architecture
ShopFlow is a full e-commerce stack with a Next.js and React storefront, Node.js services, MongoDB persistence, and Stripe payment confirmation driving stock and order state.
[Next.js / React Storefront]
│ HTTPS
▼
[Node.js Commerce API]
├──► [MongoDB Catalog & Orders]
├──► [Stripe Payment Confirmation]
└──► [Admin Inventory & Order Pipeline]Presentation Layer
Customer storefront for catalog search and filters, cart, checkout, order tracking, and an admin console for products and inventory.
Service & Orchestration Tier
Node.js commerce APIs with atomic stock updates at payment confirmation and an order status pipeline for warehouse and support.
Data Storage & Persistence
MongoDB for products, inventory, and orders, with indexed queries and cached category listings for catalog scale.
Security & Access Boundary
Payment integration through Stripe and admin controls for products, promotions, and order operations.
Engineering challenges
Concurrent Checkout Stock
Friction
Inventory going negative under concurrent checkouts.
Solution
Atomic stock updates at payment confirmation keep inventory accurate after each sale.
Catalog Growth Latency
Friction
Slow category pages as the catalog grew.
Solution
Indexed queries and cached category listings keep browsing responsive.
Order Timeline Gaps
Friction
Support team lacking a clear order timeline.
Solution
Order timeline visible in admin and customer portals across the status pipeline.
Outcomes
Stock Accuracy
- Before
- Negative inventory under concurrent checkouts
- After
- Atomic updates on payment confirmation
- Impact
- Inventory stays in sync after each sale
Category Browse
- Before
- Slow category pages at larger catalog size
- After
- Indexed queries with cached listings
- Impact
- Faster storefront browsing as products grow
Support Clarity
- Before
- Unclear order status across teams
- After
- Shared order timeline in admin and customer portals
- Impact
- Warehouse and support share one status view
Commerce Ops
- Before
- Fragmented storefront and inventory tools
- After
- Unified storefront plus admin inventory
- Impact
- Products, orders, and promotions managed in one stack
Technology
Frontend
- Next.js
- React
Backend Systems
- Node.js
- Stripe
Persistence
- MongoDB
Product Capabilities
- Catalog search and filters
- Cart and checkout
- Admin inventory
- Promotions and discount codes

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