I build backend systems in Java and spend a lot of time on AWS, writing Lambdas in TypeScript and Python
and running workloads on Kubernetes. Outside work I build tools that help me think and work better.
Spec-Driven Development and loop engineering: AI-in-the-loop workflows where the spec is the source of truth
and verification decides when each step is done. I follow AI closely and keep what lasts.
My main project is ZettelFlow, an Obsidian plugin that turns a canvas into a note-creation workflow and the vault into something you can think with.
Before it, DB Folder, a database view for Obsidian notes (1.4k ★, now archived).
ZettelFlow docs: rafaelgb.github.io/Obsidian-ZettelFlow







