Matheus Fernandes

Principal Engineer at Vercel

Netherlands
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Summary

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Matheus Fernandes is a Principal Engineer at Vercel with 12 years of experience building full-stack web platforms and developer tools. Based in the Netherlands, he combines deep front-end craftsmanship—improving terminals, screen-recording UIs, and UX flows—with backend and infra work like DNS management, billing integrations, and CI/CD enhancements. His contributions span well-known open-source projects (Vercel, Hyper, Kap) and include practical fixes such as Windows-aware build support, composed-character handling, and robust API refactors. He favors pragmatic code quality and maintainability, frequently addressing encoding, style, and testing gaps. Collected from a Computer Science degree at Universidade Federal de São Carlos, his work blends product-focused thinking with hands-on engineering across platforms and OSs.
code12 years of coding experience
bookBachelor's degree, Computer Science, Bachelor's degree, Computer Science at Universidade Federal de São Carlos
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Stackoverflow

Stats
134reputation
3kreached
2answers
4questions
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Github Skills (37)

tokenize10
keyboard-input10
javascript10
electron10
apidoc10
vercel10
css10
command-line-interface10
keyboard-events10
user-interface10
keyboard10
ava10
google-translate-api10
api10
front-end-development10

Programming languages (15)

MDXJavaCSSC++MakefileGoHTMLSvelte

Github contributions (5)

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A free and unlimited API for Google Translate :dollar::no_entry_sign:
Role in this project:
userFull-stack Developer
Contributions:13 releases, 49 commits, 35 pushes in 1 year 1 month
Contributions summary:Matheus primarily focused on developing and refactoring the core functionality of the Google Translate API. They implemented the `tk` parameter generation logic, crucial for authenticating requests. The user also refactored the API to use promises and incorporate features like auto-correction of language and spelling. Moreover, the user enhanced the project with comprehensive testing and code style enforcement.
apigoogle-apiunlimitedsigngoogle
wulkano/Kap

Aug 2016 - Oct 2018

An open-source screen recorder built with web technology
Role in this project:
userFront-end Developer
Contributions:15 releases, 1 review, 401 commits in 2 years 2 months
Contributions summary:Matheus focused on developing the user interface for a screen recording application. They implemented features to start and stop recording, display and control the size of a video thumbnail, and added an export functionality. The user also incorporated settings for configuring video parameters like frame rate, enabled user interaction with the header for window dragging, and created a preference panel. They primarily worked with HTML, CSS, and JavaScript, including the `aperture.js` library, and incorporated features for a better user experience.
reactelectronossproductivityjavascript
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Matheus Fernandes - Principal Engineer at Vercel