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Real-Time Fraud Monitoring for Enterprise Fintech Stacks
The velocity of modern payment systems has created an unforgiving paradox: the faster you process transactions, the faster fraud can scale. When you're handling thousands of payments per second across distributed infrastructure, traditional batch fraud detection becomes a liability. By the time you discover fraudulent activity in a daily review, attackers have already extracted value and moved on. For enterprises running high-throughput fintech platforms, especially those bui

David Pop
2 days ago24 min read


The Real Cost of Failed Payments
Failed payments cost businesses and consumers over half a trillion dollars every year. This article breaks down the real causes, from backend overloads to false declines, and explains how internal and external system failures create massive losses, customer churn, and operational chaos.

David Pop
Nov 2426 min read


Best Authentication Methods for PSD2 Compliance
PSD2 authentication for Elixir/Erlang systems. Production code for passkeys, 3DS2, biometrics, dynamic linking. Optimized for high-throughput distributed payment systems.

David Pop
Nov 1722 min read


Payment Orchestration Engine Architecture: Advanced Implementation Strategies
Advanced payment orchestration implementation: microservices patterns, intelligent routing algorithms, performance optimization techniques, and production architecture for 10M+ transactions/month.

David Pop
Nov 1219 min read


Payment Orchestration Engine Architecture Guide
A Payment Orchestration Engine (POE) architecture is a centralized and intelligent platform that serves as an intermediary layer between merchant applications and multiple payment service providers (PSPs), gateways, and acquirers. Its primary role is to simplify and optimize payment processing by managing all integrations through a single point of connection. The architecture uses rules-based logic and dynamic routing to direct transactions to the most suitable provider ba

David Pop
Nov 615 min read


Invisible Payments: Auto Checkout for Apps & Stores 2026 Guide
Invisible payments are changing the way we pay. From automatically billing your Uber ride, renewing Netflix subscriptions, grabbing items at Amazon Go, to passing tolls with E-ZPass, these systems remove traditional checkout steps. Using tokenized payment credentials, biometrics , sensors, and AI, invisible payments process transactions securely and seamlessly in the background, making payments effortless for both consumers and businesses. TLDR – Invisible Payments Payments h

David Pop
Oct 2418 min read


Passkey Authentication in Payment Systems: A Practical Guide for 2026
Passkeys in payments are a new form of authentication that replace passwords and SMS codes with secure, device-based verification. They...

David Pop
Oct 1014 min read


Adrian Magdas on Crafting Good Software
https://www.techtalk.ro/posts/adrian-magdas-on-crafting-good-software-for-even-better-products

Adrian Magdas
Jun 16, 20211 min read


The Art of Celebrating Too Early And Backtracking to Save The Day. A Scraping Story
How we doubled our data with a simple backtracking trick... One of our clients asked us if we could build a simple app for scanning...

Constantin Cheptea
Apr 16, 20215 min read


A quick intro to Regular Expressions (RegEx)
Ever wondered how something as obscure and obfuscated as this ^[(]{0,1}[0-9]{1,4}[)]{0,1}[-\s./0-9]$ could be useful? This article is for...

Tamas Wagner
Jan 11, 202112 min read


Handling REST errors with RxSwift and RxAlamofire
Use enums and extension functions to simplify consuming REST APIs with RxSwift and RxAlamofire. | If you’re developing an iOS app that...

Constantin Cheptea
May 26, 20205 min read


Angular Meets Phoenix/Elixir
I recently started working on a Phoenix/Elixir based project. Well, I’m too rusty for that, I said to myself. After many years of OOP, I...

Constantin Cheptea
May 25, 20205 min read
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