Diego Castillo

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Architecting software focused on craftsmanship and simple, thoughtful products. At Buffer, I work with a fully remote team building tools that help creators and small businesses plan, publish, and analyze their social media so they can grow and connect with their communities.

Improvising bits and melodies @diegocasmo.

Products

  1. tonebuilder.ai

    An AI-powered, chat-based tone architect for Line 6 Helix.

    Built with: Next.js, AI SDK, TypeScript, Prisma, and PostgreSQL.

  2. Pocket Ledger

    A local-first expense tracker. No accounts. No cloud.

    Built with: React, TypeScript, Vite, Tailwind CSS, Dexie, and TanStack Query.

  3. findmomentum.xyz

    A productivity app that helps track and celebrate daily progress through small wins.

    Built with: Next.js, TypeScript, Prisma, and PostgreSQL.