A fintech handbook hit the front page. Then the author showed up — and so did engineers who'd built the real thing (w.pitula.me)
A solo-posted Fintech Engineering Handbook — money as integers, ledgers, idempotency, webhooks — climbed the front page, and the author turned up in the replies, baffled by his own reach.
What followed was a working seminar. Ex-fintech CTOs validated the core; others flagged the 'minor-units' integer trick as a trap with stablecoins, called event-sourcing-everywhere overkill, and argued the PII-deletion advice would get a compliance team a very bad day with regulators.
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