// writing
Posts tagged #fintech — Page 2
A mix of technical deep-dives, career reflections, and dispatches from the road.
tag: #fintech

financeJul 8, 2026· 4 min
How a Card Swipe Actually Works: The Four-Party Model and Interchange
Tap your card and the money looks instant, but four different companies and a fee called interchange are quietly settling up behind the scenes.
read more →

financeJun 24, 2026· 4 min
Buy Now, Pay Later: The Mechanics Behind the Checkout Button
BNPL looks simple at checkout, but the plumbing underneath is surprisingly complex. Here's how providers actually make money, and where the risks sit.
read more →

financeJun 13, 2026· 4 min
FedNow and Real-Time Payments: How Instant Settlement Actually Works
Most Americans still wait one to three days for bank transfers to clear. FedNow is the Federal Reserve's answer to that — but how does instant settlement…
read more →
// the newsletter