Essays and notes on AI, software engineering, developer tools, systems, and the shape of modern product building.
Antonio B De Castro

Dev containers are a band-aid. Nix is the cure.
Antonio B De Castro

Most developers treat HTML as a dumb container—they’re missing form validation, dialogs, lazy loading, and more
Antonio B De Castro

Salesforce killed the free tier and the ecosystem is scrambling for alternatives
Antonio B De Castro

Why the most overhyped technology of 2023 is simultaneously the most transformative
Antonio B De Castro

The unglamorous tools that actually make me faster every single day
Antonio B De Castro

TypeScript went mainstream, Bun arrived, and the ecosystem started valuing stability over novelty
Antonio B De Castro

Lightweight docs that capture the why behind every technical decision
Antonio B De Castro

Islands architecture and zero-JS-by-default is the future of content-heavy websites
Antonio B De Castro

The real problem isn’t that you have tech debt—it’s that you don’t manage it like actual debt
Antonio B De Castro

The highest-leverage activity most experienced developers systematically avoid