Context
An Egyptian delivery marketplace with hundreds of vendors, and interlocking pricing, discount and delivery rules that had to reach the user as clarity rather than complexity.
Role
Designing the offers engine and its links to vendor and product, distance-tiered delivery zones, a per-vendor estimated delivery time, live order tracking, and a minimum-order rule calculated after discount rather than before it.
Outcome
Three repositories running in production: the customer app, the backend service, and the dashboard.