# João Copari > Software developer in São Paulo. Portfolio documenting study and implementation of computer systems, operating systems, C, and software engineering. This site is an engineering notebook, not a conventional résumé. Content is published only when there is verifiable work: repositories, experiments, and technical writing. The default language is Brazilian Portuguese. An English version lives under `/en/`. ## Site - [Home (pt-BR)](https://jcopari.github.io/github-pages-portfolio/): positioning, current study, and empty project state - [Home (en-US)](https://jcopari.github.io/github-pages-portfolio/en/): English home - [About](https://jcopari.github.io/github-pages-portfolio/sobre/): background and how the site works - [About (en)](https://jcopari.github.io/github-pages-portfolio/en/about/) - [Projects](https://jcopari.github.io/github-pages-portfolio/projetos/): case studies (none published yet) - [Projects (en)](https://jcopari.github.io/github-pages-portfolio/en/projects/) - [Learning](https://jcopari.github.io/github-pages-portfolio/aprendizado/): current focus and reading - [Learning (en)](https://jcopari.github.io/github-pages-portfolio/en/learning/) - [Writing](https://jcopari.github.io/github-pages-portfolio/escrita/): technical notes and reports (none published yet) - [Writing (en)](https://jcopari.github.io/github-pages-portfolio/en/writing/) ## Optional - [GitHub](https://github.com/jcopari) - [LinkedIn](https://www.linkedin.com/in/jcopari/) - [Sitemap](https://jcopari.github.io/github-pages-portfolio/sitemap.xml)