Guilherme Varandas
Staff Engineer at Samsara
Old Toronto, Ontario, Canada
Summary
🤩
Rockstar🎓
Top SchoolGuilherme Varandas is a Staff Engineer with 15+ years of software experience and a decade focused on mobile and front-end platforms, currently driving engineering work at Samsara after leading large-scale initiatives at Shopify. He specializes in React Native architecture and performance—at Shopify he cut initial load times by 75% and helped achieve 99%+ crash-free sessions for high-traffic merchant applications. Guilherme has led mobile teams from prototype to production, shipping a consumer app that reached 200k users in its first year and building internal component libraries that halved development time. An active open-source contributor, he has made practical UI and platform improvements to heavyweight projects like React Native and NativeBase, and localized TypeScript docs into Portuguese. Based in Old Toronto, he blends hands-on engineering with developer experience work—mentoring, docs, and tooling—to make teams more productive. Colleagues describe him as curious and slightly chaotic in the best way, always building things from LEGO to complex distributed apps.
10 years of coding experience
16 years of employment as a software developer
Bachelor Computer Science, Bachelor Computer Science at Faculdades Integradas UPIS
English, Portuguese
Stackoverflow
1reputation
0reached
0answers
0questions
Github Skills (19)
javascript10
mobile-development10
react-native10
translation10
ui-components10
typescript10
localization10
typescript-types10
typescripts10
react10
ios9
android9
documentation9
props8
app-framework8
Programming languages (7)
Github contributions (5)
GeekyAnts/NativeBase
Jun 2018 - Jul 2018
Mobile-first, accessible components for React Native & Web to build consistent UI across Android, iOS and Web.
Role in this project:
Front-end Developer
Front-end DeveloperContributions:8 commits, 1 PR, 12 comments in 1 month
Contributions summary:Guilherme primarily focused on modifying and optimizing UI components within the React Native framework. Their contributions involved adjustments to the Item component, including modifications to label and input rendering, and correcting icon positioning within floating label designs. The commits also included testing UI elements and ensuring correct rendering across different button styles. This work demonstrates an understanding of component structure and UI/UX principles within the React Native ecosystem.
reactreact-nativeaccessibleios-androidweb-native
microsoft/TypeScript-Website
Sep 2020 - Sep 2020
The Website and web infrastructure for learning TypeScript
Role in this project:Localization / Internationalization Specialist
Localization / Internationalization SpecialistContributions:1 review, 9 commits, 2 PRs in 9 days
Contributions summary:Guilherme primarily contributed to the localization of TypeScript documentation by translating example files related to functions and generics into Portuguese. They translated code examples and made minor corrections and adjustments to the translated content. Their work included translating TypeScript code examples and ensuring the translated content accurately reflected the original English versions.
typescriptinfrastructurelearning-typescript
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