Insights

Technical perspectives on fintech development, regulatory compliance, and building systems that handle real money in production.
What Happens When Your Banking API Provider Goes Down — and How to Design for It
What Happens When Your Banking API Provider Goes Down — and How to Design for It
It's not a question of if. It's 2 PM on a Thursday and your payment gateway just returned 503. You'v...
Handling Sensitive Financial Data in Multi-Tenant Environments
Handling Sensitive Financial Data in Multi-Tenant Environments
We inherited a platform once where a single missing WHERE clause in a dashboard query had been silen...
Audit Trails in Financial Systems: What Regulators Actually Want to See
Audit Trails in Financial Systems: What Regulators Actually Want to See
The auditor didn't care about our uptime. She didn't ask about our architecture. She opened her lapt...
Your Daily Cash Position Report Is Lying to You — Here's Why
Your Daily Cash Position Report Is Lying to You — Here's Why
You check the report. The numbers look right. They're not. Every payment company has a daily cash po...
Reconciliation at Scale: Matching Algorithms Beyond Simple Reference Lookups
Reconciliation at Scale: Matching Algorithms Beyond Simple Reference Lookups
A post-mortem, of sorts. What we learned building a matching engine that had to handle thousands of...
Bank Statement Ingestion: The Unglamorous Core of Every Payment Platform
Bank Statement Ingestion: The Unglamorous Core of Every Payment Platform
Nobody gets excited about parsing bank files. But get it wrong, and nothing else in your system matt...