Freelancer profile translated to English.
Back to original languageAbout Yohan
Experienced React Native developer, I design and deploy complex mobile applications in production, from conception to the stores (App Store & Google Play).
Expert in the Expo ecosystem, I master the managed workflow up to the latest SDKs, and the entire modern delivery chain: EAS Build & Update (OTA, channels, rollbacks), config plugins and custom native modules (Swift/Kotlin) when the need exceeds the managed workflow.
I attach particular importance to native performance: smooth animations at 60/120 fps with Reanimated and Gesture Handler, re-render optimization, memory management and list fluidity, profiling and startup time. The goal: an experience that is indistinguishable from a 100% native app.
I integrate Claude Code throughout the delivery cycle: project context structuring (CLAUDE.md), automation via MCP, and code quality optimization through Skills.
French
Native or bilingual
English
Fluent
Spanish
Conversational
German
Basic
Portuguese
Conversational
Italian
Conversational
Can work on-site
Paris (up to 10km)
Experience
- One Shot,React Native DeveloperSeptember 2025 - April 2026 (7 months)Paris, France• • Development from scratch of the mobile application with React Native (Expo) and TypeScript• • Google & Apple SSO• • Publishing images and videos with storage on AWS S3• • Push notifications via Firebase Cloud Messaging (FCM)• • Highly optimized performance matching native iOS and Android thanks to expo-ui and Expo Router• • Integration of Claude Code throughout the development
- Lazon,React Native DeveloperMarch 2023 - June 2025 (2 years and 3 months)Paris, France• • Development from scratch of the mobile application with React Native (Expo) and TypeScript, taking charge of the entire process, from design to deployment on the stores, alongside the CTO• • In-app subscriptions & payments via RevenueCat & Stripe• • Publishing images and videos with storage on AWS S3• • News feed and interactive video feed (TikTok format, discover)• • Push notifications via Firebase Cloud Messaging (FCM)• • Native performance• • Progressive adoption of Claude Code during the project: CLAUDE.md, MCP, CI/CD automation — velocity ×2 in the last sprints
- 5 degrèsReact / React Native DeveloperDIGITAL AND ITJuly 2021 - December 2022 (1 year and 5 months)Paris, FranceReact JS developer consultant, strengthening our clients' tech teams, feature development, taking charge of from-scratch projects
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Education
- Bachelor's degreeUniversité de Picardie Jules Verne (UPJV)2019