Orchestrating payments for the millions

This talk goes deep into the architecture behind monetizing a global SaaS platform at scale. I walk through the real technical decisions that support 30 million monthly active users and more than 30 million ARR, covering payment routing, pricing logic, currency handling, and operational realities across wildly different markets and regulatory environments.

I break down the failure modes and edge cases that most teams hit when they scale revenue systems, and share the patterns that turned instability into predictable, observable revenue. We look at the observability stack that lets us trace payment failures end to end and resolve regional issues in minutes, the operational gains from simplifying orchestration, and the DX improvements that let us experiment aggressively without breaking revenue.

We also explore our work applying chaos engineering to monetization, intentionally injecting failures in payment gateways, currencies, and pricing resolution to validate resilience under real-world conditions.

The best part? I’ll end with a live demo of this running in production on Smallpdf, where we built and shipped our in-house reactive frontend orchestration system in React, now serving tens of millions of users worldwide.