The Payments Engineer Playbook

The Payments Engineer Playbook

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In An Agentic Commerce World, Fraud Will Be Indistinguishable From Legit
Why purchasing intent is the last irreducibly human part of any transaction, and what 16th century England can teach us about what's next.
 • Alvaro Duran
Modern Treasury's Stablecoin Sandwich
After acquiring Beam, Modern Treasury wants to become the developer-first API for moving money in any form.
 • Alvaro Duran
Why AI Commerce Isn't Going Anywhere
Human Not Present payments are technically possible, but socially unacceptable
 • Alvaro Duran
How To Prevent Cache Stampedes
Think cache invalidation and naming things are hard?
 • Alvaro Duran
How To Review Code That Deals With Money
You're probably focusing on the wrong things. It doesn't look as good as you think.
 • Alvaro Duran
How to Build Payment Webhooks Fast
It's not that webhooks are difficult.
 • Alvaro Duran
The Sequence-Speed tradeoff
You can get unique identifiers at scale either by Coordinating or by Centralizing ID creation. But you can't get gapless sequences without having to…
 • Alvaro Duran
Paying At The Pump: Why Auth and Preauth Are Not The Same Thing
And how it affects implementing new payment methods that look "similar" from the outside
 • Alvaro Duran
Testable Payment Webhooks
PSPs are prioritizing their engineers' experience above anyone else's
 • Alvaro Duran
The Joy of Being On Call For Payment Systems
How to be at ease when every second counts
 • Alvaro Duran
Why Payments Are Path-Dependent
A winning strategy to go around DNHs and improve payments authorization
 • Alvaro Duran
Code-First Reliability in Payment Systems
Building Payments to fail as soon as possible
 • Alvaro Duran
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