JJ Activewear

JJ Activewear is a custom e-commerce platform with a companion mobile app — custom checkout, inventory management, and a customer loyalty layer built from scratch rather than configured on a generic platform.

What was built

The system covers the full retail flow: product catalog, multi-tier inventory, custom checkout with the payment and shipping options the brand needs, customer accounts, and a loyalty program that tracks behavior beyond pure purchases. The mobile app is a first-class citizen, not a wrapper around the web view — it has its own UX optimized for browse-and-buy in short sessions.

Why not Shopify

Off-the-shelf platforms force checkout, inventory, and loyalty into templates that fit most brands but not all. JJ Activewear's flow needed checkout decisions, inventory models, and loyalty mechanics that the platforms don't expose. Custom code makes those decisions configurable in product terms instead of fighting a template engine.

Architecture notes

The catalog and inventory live in a single system with strict consistency guarantees — overselling is the canonical e-commerce failure mode and it doesn't happen here. The mobile app shares the API surface with the web frontend, so feature work ships to both clients from one place.