LeonardoGoulart

001 · LIVE · SOLO BUILD

Readbinder

A reading tracker organized by concept instead of by book. Tag a passage as “karma”, and you can read what every author on your shelf said about the same idea.

constraint →

it has to work offline and feel fast

approach →

local-first on IndexedDB, Supabase only for sync

hard part →

resolving conflicts between devices

• Next.js 16
• TypeScript
• Supabase
• IndexedDB

• 002 · OPEN SOURCE · CLI

  Password Manager CLI

  An encrypted local vault you use from the terminal: add, retrieve, remove. I built it to understand how the encryption actually works, instead of just using a library.

  TYPESCRIPT · NODE.JS

The tools I use, and what I've done with them.

• frontend/

  I've used both Next.js routers in production, and I write the architecture down — a diagram the team can argue with beats a decision nobody remembers making.

  TypeScript · React · Next.jsTailwind · LaunchDarkly · Amplitude

• backend/

  I work with federated GraphQL: subgraphs, Apollo on both the client and the server, and the caching decisions that are the difference between a page that feels fast and one that doesn't.

  Node.js · GraphQL · ApolloREST · HIVE federation

• infra/

  The maintenance work that's easy to postpone: major dependency upgrades across a monorepo, ESLint flat config, and container deploys that don't surprise anyone.

  Nx · Docker · AWS ECS / ECRCloudWatch · Parameter Store

1. Software Engineer · US company

   2022.03 → HEAD · long-term contract · remote

   A long-term contract with a US company. I maintain production applications with active users: TypeScript and React on the front, Node and GraphQL behind them, and the platform work that keeps both healthy.

   • + TypeScript and React across a large, long-lived production codebase
   • + federated GraphQL: subgraphs, and Apollo on both the client and the server
   • + monorepo upkeep — major version bumps, lint config, container deploys on AWS
   • + onboarding engineers who are new to the codebase, with walkthroughs and pair programming
2. Fullstack Web Developer · Vórtx

   2021.09 → 2022.03 · fintech, BR

   Financial automation systems in React and Node. I improved an Azure ML model from 56% to 73% precision by cleaning and filtering its dataset, and built a reusable component library.

3. Fullstack Web Developer · Shift

   2019.11 → 2021.09 · BR

   Angular and TypeScript on an MVC codebase, REST APIs over Intersystems Caché, Docker deploys. This is where I learned to read an unfamiliar system before changing it.

4. 2018 — initial commit · freelance design at Workana, while studying Computer Engineering