Bonus PIU is Garanti BBVA's credit-card loyalty program — a points system paired with a prepaid shopping card.
When I joined the project, the core issue was clarity: users couldn't tell at a glance whether they were looking
at loyalty points or actual money in their account. That confusion surfaced repeatedly in support tickets and usability testing, where users often mistook loyalty points for prepaid card balance.
My job was to fix that ambiguity without stripping out the flexibility that made PIU valuable in the first place —
a flexible earn-and-spend system across a wide partner network.