Mathieu Acthernoene
Software Engineer at Expo
Lille, Hauts-de-France
Summary
🤩
Rockstar🎓
Top SchoolMathieu Acthernoene is a software engineer with 12 years of hands-on experience building and maintaining mobile-first products and developer tooling, currently contributing to Expo from Lille, France. He has strong cross-platform React Native expertise—especially iOS and Android native modules—and has improved widely used open-source projects like react-native-bootsplash, react-native-localize and Expo itself. At Swan he progressed to Staff Engineer, blending deep implementation skills with system-level thinking across mobile and product teams. Pragmatic and curious, he often focuses on careful refactors, compatibility updates and subtle UX fixes (for example improving loading views and edge-to-edge Android behavior) that quietly raise reliability for many apps. His background in product ownership and UI/UX design informs a user-centered approach to engineering and open-source collaboration.
12 years of coding experience
10 years of employment as a software developer
Licence Professionnelle RSC Option e-commerce, Licence Professionnelle RSC Option e-commerce at Université du Littoral Côte d'Opale
English, French
Github Skills (23)
objective-c10
javascript10
ios10
mobile-development10
react-native10
i18n-node10
expo10
internationalization10
android-development10
localization10
android10
i18n-js10
mobile10
swift10
i18next10
Programming languages (20)
Github contributions (5)
AlexanderZaytsev/react-native-i18n
Mar 2017 - Sep 2019
React Native + i18n.js
Role in this project:
Mobile Developer (iOS & Android)
Mobile Developer (iOS & Android)Contributions:14 releases, 103 commits, 33 PRs in 2 years 6 months
Contributions summary:Mathieu primarily contributed to the cross-platform React Native project by implementing and improving native iOS and Android modules related to internationalization (i18n). They fixed linking issues for both iOS and Android platforms and improved language detection mechanisms. The user also updated the project to support various React Native versions and integrated the i18n library with the native modules, ensuring consistent locale and language handling across both platforms.
reactreact-nativeinternationalizationi18n-jslocalization
zoontek/react-native-localize
Aug 2017 - Oct 2022
🌍 A toolbox for your React Native app localization
Role in this project:Mobile Developer (iOS)
Mobile Developer (iOS)Contributions:63 releases, 14 reviews, 265 commits in 5 years 3 months
Contributions summary:Mathieu primarily focused on maintaining and improving the `react-native-localize` library, which provides localization tools for React Native applications. Their contributions included fixing typos, refactoring code to address RN 0.48+ warnings, and updating dependencies to support newer React Native versions. Further contributions involved renaming the package and improving iOS-specific implementation details.
reactlocalereact-nativenative-apptoolbox
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