Building FamPay's first fraud and risk engine
How we built a deterministic, configurable fraud detection system for a payments company processing millions of transactions a day — and the storage rearchitecture that cut query latency 10x.
Read the postWhy we're building engforeng in the open
Most engineering writing shows the polished result. We want the messy middle: the tradeoffs, the dead ends, and the judgment calls that never make it into the postmortem.
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