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Payment Flow Engineering

Engineering notes on payment states, embedded apps and reliable user-facing financial flows.

Joined on Oct 29, 2026

Payment Flow Engineering

Nov 7

67 SixSeven Mini App: Mapping a Wallet-to-Card User Flow Without an API

#architecture #design #product #ux

6 min read

Payment Flow Engineering

Nov 2

Modeling Wallet-to-Card Transfers as a State Machine

#architecture #backend #fintech #systemdesign

4 min read

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