shixzie
ColombiaLocal time in Colombia
Juan Alvarez's avatar

Juan Alvarez@shixzie

AI EngineerColombia

Contact

Just a normal guy~ who likes building
thoughtful interfaces, privacy-first apps, developer tools, tiny experiments for the web.

Available for new projects

Other works

Factory on Rails

A software factory on Railway: describe a change, and a coding agent does the work in a sandbox and opens a pull request.

TypeScript · Effect · Railway

More on GitHub

Everything else I've open-sourced, experiments included.

github.com/shixzie

Toolbox

  • TypeScript
  • React
  • Effect
  • Next.js
  • Cloudflare Workers
  • Railway
  • PostgreSQL
  • WebAssembly
  • MCP
  • Astro

Background

  1. NowBuilding RealPDF and Factory on Rails in the open.
  2. 2026 SepStarted Factory on Rails, a software factory where coding agents open the pull requests.
  3. 2026 SepLaunched RealPDF: edit, sign and convert PDFs without uploading them anywhere.
  4. 2016Opened a GitHub account and started building in public.

Say hi

The quickest way to reach me is email — I read everything, and I usually reply within a day or two.

juanca.alvrz@gmail.com