The journal

Notes from the sharp end of software.

Practical thinking on backend systems, product engineering, exchange infrastructure, and the details that keep production calm.

Exchange infrastructure

2026-07-28

The backend checklist before an exchange goes live

The operational paths that deserve more attention than the happy-path trade screen.

Rails

2026-07-14

Why a predictable backend makes it easier to ship customer-facing changes.

FastAPI

2026-06-30

A practical way to decide whether a focused Python service earns its operational cost.