Engineering Notes

Field notes from building software

Practical writing on full-stack development, React Native, Java and the decisions that do not show up in the diagrams.

How a JSON payload, Bedrock and a Lambda function turned a two-week delivery cycle into a two-hour one, with no human in the loop.

A migration runbook is a script that has not been written yet. Here is how I turned a fragile manual checklist into idempotent shell automation.

Tenant isolation is a network and identity decision before it is an application one. How I laid out the VPC for BuildTracker.

State, environments and modules are not three problems. They are one problem with one consistent answer.

The framework is not a form you fill in before launch. It is a set of questions you keep asking after launch.

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