Freelancer profile translated to English.
Back to original languageAbout Nicolas
React Native Developer
Architect & Lead Mobile Developer, I design and industrialize production-ready React Native applications.
I build stable, performant, and maintainable mobile applications capable of passing Apple & Google validations without friction.
My goal: deliver apps that last, not fragile POCs.
📲 Advanced React Native Expertise
🔹 Scalable mobile architecture (Clean Architecture)
🔹 Strict TypeScript & testable codebase
🔹 Fine-grained performance management (re-render, memoization, profiling, bridge optimization)
🔹 Data security (SecureStore, Keychain, biometrics, token management)
🔹 Native module integration when necessary
🚀 Mobile Industrialization & Delivery
🔹 Expo & EAS Build
🔹 OTA delivery (Expo Updates)
🔹 App Store & Google Play publishing
🔹 Environment management (dev / staging / prod)
🔹 Apple & Google compliance (privacy, permissions, store guidelines)
🔹 Monitoring & crash reporting (Sentry, logs, analytics)
I handle the entire mobile delivery chain.
🧠 Product Vision & Global Architecture
My background as a Symfony / React architect gives me a complete vision:
🔹 Secure & performant APIs
🔹 JWT role & auth management
🔹 Backend scalability
🔹 Controlled technical debt
🔹 Long-term strategy
🛠️ Main Stack
Mobile
• React Native
• Expo
• TypeScript
Backend
• REST / GraphQL APIs
• PostgreSQL / MySQL
📱 Project Types
• Complex business applications
• Mobile SaaS applications
• Web refactoring → mobile
• Structured MVPs for rapid scaling
• Solid industrialization & production deployment
🤝 Methodology
🔹 Value-oriented product approach
🔹 Clear communication with CTO & product managers
🔹 High standards for quality & maintainability
🔹 No quick wins that create debt
🚨 Looking for a React Native developer capable of delivering a production and store-ready application?
Let's talk.
English
Fluent
French
Native or bilingual
Can work on-site
Paris (up to 50km), Lyon (up to 10km), Marseille (up to 50km)
Experience
- Groupe Mutualiste RATP
On Malt
React Native DeveloperBANKING AND INSURANCEMay 2025 - Today (1 year and 2 months)Paris, FranceI was contacted by the RATP mutual insurance company for their React Native application development project. Given the very tight deadlines for this project and their need for expertise, I was able to assist them in the scoping phase.Specifically, a two-day audit of their services, followed by the delivery of a detailed estimate:- backend development (PHP API)- frontend development (React Native)Estimate based on a breakdown I performed:- List of user stories- List of endpoints to implementI also handled projecting the development into a clear and actionable roadmap. - GOLD AVENUE SAReact Developer | Performance Consultant (Web Core Vitals) and SEO - React Native ExpertE-COMMERCEJuly 2025 - Today (1 year and 1 month)Genève, SwitzerlandSpecializing in React Native, I assist companies from the scoping phase to the production deployment of reliable, maintainable, and user-experience-oriented mobile applications.- React, Next.js- Nativewind- TypeScript- React NativeI act as an expert in React and React Native programming.
- MAAF AssurancesReact Native DeveloperBANKING AND INSURANCEJuly 2021 - September 2021 (2 months)Hôtel de Ville, Paris, France🚀 Fullstack Developer – Short-term Mission🗓️ #MAAFacondetre Application – MAAF AssurancesDevelopment of a cross-platform mobile application in React Native, with a backend in Symfony 5 (API Platform).Goal: create an internal team-building tool, like a mini Instagram for MAAF employees.🧩 Key Features:FeedUser account creationCustomizable photo postingFilters & stickersIntegrated messagingPush notifications🛠️ Stack Used: React Native · TypeScript · Symfony 5 · API Platform · PHP · JavaScript
Reviews
Alain
Alain Choukroun
Reviewed on 3/26/2021
No problems at all!
Alain
Alain Choukroun
Reviewed on 3/24/2021
Excellent collaboration! Efficiency, speed, understanding, it was perfect.
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Education
- BTS SIO (Services Informatiques aux Organisations)Dominique Villars GAP2017Option SLAM Solutions logicielles et applications métiers
- React NativeOpen Class Room2020