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Leandro Bertalhia

I build products end to end, from the database to the screen, and the platform that ships them.

  • TypeScript
  • Next.js
  • React
  • NestJS
  • Expo
  • SwiftUI
  • PostgreSQL
  • Prisma
  • Drizzle
  • tRPC
  • Docker
  • Cloudflare

The history, commit by commit

  1. Sep 2026 to now

    lejustudio

    Owner and developer

  2. Sep 2026 to now

    Open source

    Author

  3. May 2025 to Oct 2026

    Hybriun Desenvolvimento

    Full stack developer

The checks my work passes

  • Tests come with the code

    In my latest product, 86% of my backend commits change a test.

  • Every change goes through a pull request

    The merge waits for every check: 194 pull requests on my platform.

  • The rules live in each repository

    Each repository has an AGENTS.md with the rules its agents follow.

  • I review my own code for security

    I review the code I ship for security, and I fix what I find.

  • Requirements trace to code

    I audited all 37 stories of a prototype, criterion by criterion.

  • Infrastructure is code with a preview

    Environments, DNS, e-mail and secrets come from commands that preview every change.

Talk to me