Flow — Crypto Payment Infrastructure Description: Full-stack

Flow — Crypto Payment Infrastructure

Description: Full-stack institutional crypto payment rail built solo. Merchants accept payments on 12+ blockchains and funds settle directly to their own wallets — Flow never holds or controls merchant funds.

Built on the RPG stack: Rust for HD key derivation and cryptography, Go for multi-chain routing and gateway, Python for business logic and indexing. 7 independent microservices, 20-page merchant dashboard in 13 languages, Active Treasury yield engine, batch vendor payouts, and webhook delivery.

Live in production — $5,241 processed, 97 settlements, 100% success rate.