Points Mall
Designed an end-to-end points mall covering points lotteries and product redemption. The user side includes eligibility checks, points deduction, lottery results, redemption, address selection, payment, order tracking, and after-sales flows. The admin side covers campaign and prize setup, redemption rules, participation limits, orders, shipping, refunds, and exports. The solution aligns points, inventory, payments, orders, and fulfillment states, while using idempotency and rollback rules to reduce duplicate deductions, overselling, payment errors, and inconsistent states.
Owned the end-to-end product design for both user and admin experiences, including lotteries, points redemption, business rules, state design, order fulfillment, exception handling, interaction design, and QA acceptance.