Field notes on ledgers, events, Postgres and migrations — plus the search-and-AI-visibility playbooks — written from production, not from theory. Roughly one substantial piece a month; no filler, no listicles. The flagship: the fourteen-company fintech teardown series — Stripe, Revolut, Monzo, Nubank, PhonePe, Kaspi and eight more, canonical here, syndicated to LinkedIn.
The teardowns are the spine. Each one reads a company’s production architecture from its artefacts — engineering blogs, incident reports, API behaviour — and names what’s imitable at your scale and what isn’t. They’re also the standing proof behind every service page: judge the reasoning free, then decide whether to rent it.
Start by problem. Numbers don’t match → Why Your Ledger Drifts. Building a money product → Ledger Design and Idempotency Done Right. A migration you’re scared of → Zero-Downtime Migration. Distributed-systems pain → Event-Driven Pitfalls. Want to be found by AI answer engines → Generative Engine Optimisation and the technical SEO foundation under it.
Everything here follows the site’s own rules: answer-first openings you can quote, sources named inline, and no advice that wouldn’t survive being read back to me on a client call. The articles give the methods away; the services sell the hands. That trade is deliberate — engines cite reasoning, buyers trust receipts, and the confidence trick where the trick is competence needs both.