Portfolio.
Selected products and features
Andrzej Witkowski, 2025
Embedded Files
Portfolio.
Billon
Mass Payout system
Reckitt Health
Enfamil in-app D2C Shop (during the emergency)
Consumer protection program in Asia
Scholl Foot Expert app
Twisto Pay
Referral program reactivation, with conditions and abuse prevention
Bulk repayment and Subscription improvement
Google Sites
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