#payments — Isaac Olanrewaju

September 27, 2026 · 11 min read

Why Senior Engineers Write Code That Looks Junior

Junior simplicity comes from not knowing the options. Senior simplicity comes from knowing all of them and choosing restraint. On the three stages of complexity, why over-engineering is the default, and six questions to ask before adding another abstraction.

August 18, 2026 · 10 min read

Event Sourcing: The Database That Refuses to Forget

Most databases are designed to forget. Event sourcing flips the model: store the history and derive the present from it. What it actually is, why payments people care, how it differs from event-driven architecture, and when a humble history table is the better call.

June 28, 2026 · 12 min read

Your database and Kafka are lying to each other

The transactional outbox pattern fixes the dual-write problem between your database and Kafka without pretending distributed commits are easy.