Designed a peer-to-peer QR payment system on the EMV standard, and led delivery of Request to Pay across the mobile app and USSD.
Customers and merchants needed QR payments that any compliant wallet could read, and a way to request money that also reached users without a smartphone.
Stack.NET, Microservices, EMV QR, TLV encoding and USSD
Built a scheduler that dispatches 700-800k push notifications per run in 6-8 minutes, with multilingual payloads for Android and Huawei devices.
Built with.NET, Schedulers, Android push and HMS Push
Read case studyOpen to full stack & backend roles, and to scoped freelance work.