# Paulo Queiroz

> Full-stack software engineer based in Brazil. I build high-performance web apps, open-source tools, and systems software.

This is Paulo Queiroz's personal portfolio and software engineering blog.
The portfolio text combines home and about content: biography, skills, professional experience, and selected projects.
Articles are available in English and Portuguese. Each .md URL serves a complete text version with code examples, without requiring JavaScript.

## Portfolio

- [Home and about](https://raggesilver.com/index.md): Biography, experience, skills, and projects in English.
- [Início e sobre](https://raggesilver.com/pt/index.md): Portfolio in Portuguese.
- [Blog](https://raggesilver.com/blog): English articles.
- [Blog em português](https://raggesilver.com/pt/blog): Portuguese articles.

## Background

Web development and systems programming are my main areas of interest. I can code low-level applications in C and full-stack websites with modern JavaScript frameworks.
Areas of expertise: Frontend, Backend, Mobile, Systems Programming.
Languages: Portuguese (native), English (fluent).

- Senior Software Engineer — Collectly (Santa Monica, CA, US) (current)
- Software Engineer II — Hinge Health (San Francisco, CA, US)
- Software Engineer — Overflow (San Jose, CA, US)
- Software Engineering Intern — Lux Control (Brazil)
- React Native development — NDA, contract
- Dashboard, PWA, management system development — Alaminas, contract

## Selected projects

- Tasks.app: A Trello alternative with a focus on ease of use.
- Black Box: A beautiful and modern terminal emulator for the Linux desktop with over 200K downloads.
- Pickup SaaS: A complete management system for an oil collection company. This PWA can be used by managers, drivers, and suppliers to browse, manage, and register new pickups.
- Proton: A native, extensible IDE for Linux. Designed to have better performance than Electron-based solutions.

## Articles (English)

- [Your First Backend ✨](https://raggesilver.com/blog/03-your-first-backend/index.md): Creating your first backend with Node.js
- [Your First Backend 🔥 — Part 2](https://raggesilver.com/blog/04-your-first-backend-part-2/index.md): Handling form submissions, storing data, and more.
- [Errors, real quick](https://raggesilver.com/blog/05-errors-real-quick/index.md): Let's take a look at raising and handling errors.
- [Environment Variables](https://raggesilver.com/blog/06-environment-variables/index.md): Let's make use of environment variables to store sensitive and configuration data.

## Articles (Português)

- [Seu Primeiro Backend ✨](https://raggesilver.com/pt/blog/03-your-first-backend/index.md): Criando seu primeiro backend em Node.js
- [Seu Primeiro Backend 🔥 — Parte 2](https://raggesilver.com/pt/blog/04-your-first-backend-part-2/index.md): Submissão de formulários, armazenamento de dados e mais.
- [Erros, rapidinho](https://raggesilver.com/pt/blog/05-errors-real-quick/index.md): Vamos dar uma olhada rápida em como criar e lidar com erros.
- [Variáveis de Ambiente](https://raggesilver.com/pt/blog/06-environment-variables/index.md): Vamos aprender a usar variáveis de ambiente para armazenar dados sensíveis e de configuração.

## Contact and profiles

- [Email](mailto:pvaqueiroz@gmail.com)
- [GitHub](https://github.com/raggesilver)
- [LinkedIn](https://www.linkedin.com/in/paulovi-queiroz/)
- [Mastodon](https://mastodon.social/@raggesilver)