Freelancer profile translated to English.

Description

🚀 Web & Mobile Developer – React | React Native | TypeScript

Do you want tolaunchorscale a webor **mobile product**, a SaaS tool, a back-office, or a **Design System**, while meeting **your business objectives**?

I support startups and companies in the design, development, and redesign of modern, scalable products with a solid stack: **React**, **React Native**, **Expo**, **Next.js**, **Typescript**, **Supabase**, ensuring **consistency**, **accessibility (a11y)**, **maintainability**, **performance**, and **scalability**.

With over 5 years of experience, I work on the entire product cycle:

UX/UI,
Technical Architecture
Development / Build
Testing
Deployment / Release
Maintenance / Continuous Improvement

I deliverstable**, **scalable productsdesigned to avoid recurring technical issues, while maximizing value foryour usersand **your business objectives**.

🛠️Main technical stack:

React React Native Expo
Next.js
TypeScript
Tailwind MaterialUI Ant Design
Supabase
Node.js

🚀 Projects completed:

Ride-sharing application (React Native + Expo + Supabase)
Cross-platform Design System (React + React Native)
Real estate & insurance SaaS tool (React + React Native)

🤝 Why collaborate with me?

Technical & product vision: I build solutions aligned with business and user needs.

*ExpertiseinReact**, **React Native**, **Supabase**, **TypeScript**, **Cross-platform Design Systemfor modern, fast, and reliable products.

Agile & collaborative approach: solo mission or direct integration into your teams.

📩 Available 7/7 via Malt messaging – quick response guaranteed.

Industry field of expertise

Languages

English
Conversational
French
Native or bilingual

Workplace preferences

Can work on-site

Paris (up to 50km)

Repubet
Founder & CTO - Sports Betting App
March 2026 - Today (3 months)
Design, development, and deployment of a mobile application allowing users to share free sports predictions.

🎯 Key Achievements:

Complete design and development of the mobile application with React Native (Expo) using a scalable and maintainable architecture.
Implementation of a social prediction posting system:
Creation and sharing of bets,
Community interactions around content.
Integration of a hybrid monetization model:
Google AdMob ads,
Rewards system (rewarded ads) to unlock premium content,
Annual subscription via RevenueCat (cross-platform in-app purchase management).
Implementation of a backend with Supabase:
PostgreSQL secured via Row Level Security (RLS),
Edge Functions for business logic,
Scheduled tasks via cron jobs.
Integration of external sports APIs for automatic retrieval of matches, results, and associated data.
Implementation of a push notification system to improve user engagement (new predictions, results, premium content).
Automation of mobile build and publication with Expo Application Services (EAS).
Complete management of the mobile release cycle (build, distribution, OTA updates).
Store publication,
Social media management

⚙️ Stack & Tools:

React Native, Expo, TypeScript
EAS Build & Submit, Push Notifications
Supabase (PostgreSQL, RLS, Edge Functions, Cron)
RevenueCat, Google AdMob
Sports REST APIs
Mobile CI/CD & continuous deployment

📊 Impact:

Creation of a complete mobile product, from design to production.
Secure backend architecture.
Multi-channel monetization implemented from launch.
Improved user engagement through notifications and community content.
Industrialization of the mobile build and publication process.
React Native Development Expert Typescript Expo Supabase PostgreSQL
Bouygues Telecom
Frontend React / React Native Developer - Design System & Accessibility
TELECOMMUNICATIONS
February 2022 - Today (4 years and 4 months)
Vélizy-Villacoublay, France
Maintenance, evolution, and dissemination of a cross-platform Design System (React / React Native), with a strong focus on accessibility, documentation, product consistency, and adherence to SemVer (Semantic Versioning) practices.

🎯 Key Achievements:
Complete redesign of component accessibility (a11y): WCAG compliance
Interactive documentation via Storybook (demos, playgrounds, use cases, UX/UI guidelines).
Automatic generation of technical documentation from JSDoc to standardize maintenance and facilitate onboarding.
Delivery of a major version of the Design System integrating new accessibility, ergonomics, and cross-platform theming standards.
Development of a codemods tool (using jscodeshift) to automate version migrations on React and React Native.
Microfrontend architecture for large-scale development.
Application generator with static rendering integrating the Design System.
Creation of a Page Builder to dynamically assemble components and generate custom templates.
Direct contribution to production deployment and team support on adoption and best practices for accessibility and integration.
Optimization of CI/CD pipelines (GitHub / GitLab), ensuring continuous and reliable deliveries.

⚙️ Stack & Tools:

React, React Native, TypeScript, Astro, Next.js, SCSS
Storybook, JSDoc, WCAG, ARIA, Testing Library
GitHub, GitLab CI/CD, jscodeshift, Microfrontend, Static Rendering

📊 Impact:
Enhanced accessibility and adoption of a Design System compliant with a11y standards.
Clear and centralized documentation (Storybook + JSDoc) fostering inter-team collaboration.
Visual and functional consistency across all Bouygues products.
Productivity gains through industrialization and automation tools.
React.js React Native SASS Typescript Gitlab CI/CD
Kovoit
Co-founder & CTO - Ride-sharing App
TECH
July 2024 - July 2025 (1 year)
Courbevoie, France
End-to-end design and development of a ride-sharing mobile application, integrating all the features of a modern shared mobility platform, with a focus on performance, reliability, and accessibility (a11y).

🎯 Key Achievements
Complete booking system for drivers and passengers, with secure payment via Stripe and real-time status management.
Backend architecture based on Supabase (PostgreSQL, Edge Functions): role and permission management, and data security.
Intelligent search engine (address, geolocation, distances, cache) for optimized performance.
Mobile accessibility (a11y): design of accessible screens and components, with a focus on visual (contrast, readability) and functional accessibility, via the React Native API (labels, roles, VoiceOver / TalkBack compatibility).
Interactive map, real-time chat (classic + semi-automated), push notifications, ratings and reviews, dynamic pricing, and a dedicated event section for festivals.
Publication and deployment on iOS and Android.

⚙️ Technical Stack

React Native, TypeScript, Supabase (PostgreSQL, Edge Functions), Stripe
Features: authentication, booking, geolocation search, real-time chat, push notifications, mapping, dynamic pricing, accessibility (a11y)

📊 Impact
Complete autonomous realization of a robust, performant, and accessible application.
Implementation of advanced features comparable to market standards.
Smooth and inclusive user experience, thanks to the consideration of accessibility from the design phase.
React Native Typescript Supabase Stripe