Scaling Payments Without Losing a Cent

Nov 20, 2025 · 1 min read
talks

How to keep money correct while scaling: idempotency keys, double-entry ledgers, reconciliation, and the failure modes that bite payment systems under load — with patterns that hold up in production.

Payments Databases Distributed Systems
Ahmed K Emara
Authors
Ahmed K Emara (he/him)
Chief Technology Officer · FinTech & Platform Engineering
I’m a chief technology officer with 18+ years building and scaling technology organizations across regulated FinTech, payments, e-commerce, and enterprise platforms. Today I’m CTO at Tarmeez Capital, a Saudi FinTech financing and investing through Islamic Sukuk, where I took the platform from a four-person pre-launch team to 40+ people and a CMA/SAMA-licensed launch. I write about backend engineering, databases, security, microservices, and FinTech infrastructure — the problems I actually hit in production.