Bruno Lemos
Lead Software Engineer at Unlayer (YC W22)
São Paulo, Brazil
Summary
🤩
Rockstar🎓
Top SchoolBruno Lemos is a Lead Software Engineer based in São Paulo with 11 years of experience building complex React and React Native products and shipping robust TypeScript integrations. Currently leading engineering at Unlayer (YC W22), he blends front-end craftsmanship with full-stack build expertise, having modernized build pipelines and TypeScript support in projects like create-react-app and Rematch. A prolific open-source contributor, Bruno has improved widely used libraries such as styled-components, react-spring and react-native-gesture-handler, often focusing on type safety, cross-platform compatibility and developer ergonomics. He’s delivered measurable impact at startups—scaling user growth and revenue—while founding a developer-focused company and architecting a React Native monorepo to share code across iOS, Android and web. Notably, he combines hands-on bug fixes and library-level API enhancements with practical build- and typing-focused work that improves everyday developer experience.
11 years of coding experience
12 years of employment as a software developer
Technical, Technical Industrial Computing and Automation, Technical, Technical Industrial Computing and Automation at UNESPUniversity of São Paulo
Portuguese, English
Stackoverflow
9,117reputation
5.6mreached
46answers
11questions
css
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firebase
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google-cloud-messaging
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javascript
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colors
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Github Skills (47)
javascript10
ios10
mobile-development10
react-native10
animation10
css10
typescript10
gesture10
styled-components10
colors10
android-development10
webpack10
typehinting10
front-end-development10
android10
Programming languages (21)
Github contributions (5)
ivanseidel/Is-Now-Illegal
Jan 2017 - Feb 2017
🚫 A NERD protest against Trump's Immigration ban
Role in this project:
Front-end Developer
Front-end DeveloperContributions:162 commits, 4 PRs, 166 pushes in 19 days
Contributions summary:Bruno primarily contributed to the front-end development of the project. They focused on creating the initial page layout and implemented UI components using HTML, CSS, and JavaScript. The user also initialized a React project using create-react-app and subsequently built the main page layout and its associated components. Further contributions included the implementation of share page components and dynamic page title updates.
shadowprotestpaddingimmigrationban
brunolemos/react-native-web-monorepo
Mar 2019 - Dec 2020
Code sharing between iOS, Android & Web using monorepo
Role in this project:Full-stack Developer
Full-stack DeveloperContributions:45 commits, 13 PRs, 41 pushes in 1 year 9 months
Contributions summary:Bruno contributed to the development of a React Native monorepo, demonstrating proficiency in sharing code across iOS, Android, and Web platforms. Their work included initializing a React Native project, implementing a shared component, and adapting the application for web support using react-native-web. The user also upgraded React Native versions and set up TypeScript integration to improve code maintainability and developer experience.
mental-healthreactmonoreporeact-nativeios-android
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