Cezar Augusto
Senior Front-End Developer at Maro
Rio de Janeiro, Brazil
Summary
🤩
Rockstar🎓
Top SchoolCezar Augusto is a Senior Front-End Developer with 10 years of experience building browser-focused tooling and polished React UIs from Rio de Janeiro. He created Extension.js, a popular cross-browser extension CLI/framework used by 600+ developers and 4.3k+ GitHub stars, and has deep hands-on experience shipping extension platforms, polyfills, and zero-config build pipelines. A core contributor at Brave, he led UI component libraries and ad-blocking extension work while migrating legacy Electron frontends to Chromium. He combines product-minded engineering—creating CLI scaffolds, dev servers and multi-browser build commands—with a background in full-stack and dApp development on Solana. Unusually for a front-end specialist, he also brings discipline from five years as a rescue paratrooper, reflecting resilience and leadership under pressure.
10 years of coding experience
11 years of employment as a software developer
BSc, Physics, BSc, Physics at Universidade Federal FluminenseBSc, Computer Science, BSc, Computer Science at University of London
Portuguese, English
Stackoverflow
9,432reputation
3.3mreached
30answers
3questions
npm
top-5%
css-position
top-5%
github
top-5%
npm-install
top-5%
javascript
top-5%
Github Skills (42)
unit-testing10
javascript10
storybook10
browser-extension10
ui-components10
css10
user-interface10
browser10
webpack10
webpacker10
pullrequest10
webextension10
react10
cli10
microsoft-edge9
Programming languages (12)
Github contributions (5)
extension-js/extension.js
Oct 2020 - Feb 2022
🧩 The cross-browser extension framework.
Role in this project:
Full-stack Developer
Full-stack DeveloperContributions:8 releases, 41 reviews, 107 commits in 1 year 3 months
Contributions summary:Cezar primarily focused on setting up and configuring the development environment for a cross-browser extension framework. They added Webpack for module bundling and a polyfill for WebExtension APIs, ensuring compatibility across different browsers. Furthermore, the user implemented a `create` command to facilitate the creation of new browser extensions, which included setting up the project structure and installing necessary dependencies, and added the start command, that helps run the extension using a development server. Their contributions streamlined the development process for browser extensions, including Chrome and Edge.
web-extensionsextensionschromiumrunnergenerator
brave/brave-ui
Oct 2017 - Apr 2020
List of reusable React components to empower your brave UI
Role in this project:Front-end Developer
Front-end DeveloperContributions:14 releases, 589 commits, 130 PRs in 2 years 6 months
Contributions summary:Cezar primarily focused on front-end development, contributing to the reusable React components library for the Brave UI. They implemented and configured linting rules using Prettier and StandardJS. The user also developed UI components, including button styling and functionality with specific features like custom sizing, and they implemented unit tests and snapshot tests for the `browserButton` component, enhancing the library's test coverage.
reactempowerbravereact-componentsreactjs
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