The Payments Engineer Playbook

The Payments Engineer Playbook

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May 2025

Enterprises Hope That Python Will Make Them AI-first
Maybe the surprise isn't that they're trying to follow the hype, but that they're abandoning Java
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Alvaro Duran
The Technical Face of Payments as a Service
How can technology make payment processing easier? Let me give you 4 ways, and a litmus test.
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Alvaro Duran
The Regulatory Face of Payments as a Service
Unbundling ISOs, Expanding the Card Payment Ecosystem, Spreading Mass Confusion
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Alvaro Duran
3RI Is A Technical Lever
Saving your customers from the annoying 3DS challenges, especially when they aren't around to perform them.
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Alvaro Duran
Welcome to The Playbook!
3 Articles To Start Building Payments Software
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Alvaro Duran

April 2025

5 Common Antipatterns in Payment Systems Design
They're sensible approaches that end up becoming major obstacles for scale and maintenance down the road.
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Alvaro Duran
Never Make a Status Request Again: How to Communicate with PSPs
PSPs are satisfied when you receive the data you need, even if you get it multiple times
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Alvaro Duran
Payment State Machines Are Not Cyclical
If your diagram is going back to a previous state, you're doing it wrong
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Alvaro Duran
Leveraging Spaced Repetition to Power My Weekly Newsletter
The Payments Engineer Playbook, April Cools edition
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Alvaro Duran
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