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Vincent Saint-AubertVS

Vincent Saint-Aubert

Senior React Native & Fullstack Engineer 🚀

€600/day
Paris, FR
8-15 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Vincent

TypeScript fullstack engineer specializing in React Native, React.js, and Node.js, I have contributed to high-audience mobile applications in the sports ecosystem (Mon Petit Gazon, Mon Petit Prono, Ligue 1...) and independently developed a fullstack mobile application, including a secure backend, payments, push notifications, and full deployment of the technical architecture.
  • English

    Fluent

  • French

    Native or bilingual

Can work on-site
Paris (up to 50km)

Experience

  • EGØ
    Creator & Fullstack Developer (React Native / Node.js – TypeScript)
    SOCIAL NETWORKS
    January 2025 - May 2026 (1 year and 4 months)
    Paris, France
    Design and development of a dating mobile application with complete autonomy, from backend architecture to mobile deployment.

    🎯 Missions

    – Mobile development in React Native (TypeScript)
    – Design and implementation of a REST API in Node.js (LoopBack 4)
    – PostgreSQL modeling
    – Integration of payments and subscriptions (RevenueCat)
    – Multi-provider authentication (Apple, Google, Facebook)
    – Push notifications (Firebase Cloud Messaging)
    – Media storage management (S3-compatible)
    – App Store & Google Play publication

    ⚙ Technical Challenges

    – Fullstack architecture (mobile + backend)
    – Backend deployment (Railway) and database configuration
    – Environment management (dev / production)
    – Securing webhooks and third-party services
    PostgreSQL Firebase Railway RevenueCat
  • Mon Petit Gazon – Mon Petit Prono – Application officielle Ligue 1
    React Native & React (TypeScript) – Web & Mobile Applications
    SPORTS
    January 2022 - December 2024 (2 years and 11 months)
    Paris, France
    Contribution to the development of mobile applications used by millions of users:

    -Mon Petit Gazon (MPG)
    - Mon Petit Prono (MPP)
    - Official Ligue 1 Application

    🎯 Missions

    -Mobile development in React Native (TypeScript)
    - Web development in React.js (Vite, Next.js)
    - Work on a shared monorepo between web and mobile
    - Implementation of critical features during periods of high load (competitions, live matches)
    - Advanced state management (Redux, Zustand, React Query)
    - Complex animations with Reanimated

    ⚙ Technical Challenges

    - Performance maintenance on high-volume applications
    - Ability to quickly switch between projects according to product priorities (3 mobile applications and 3 web applications)
    - Close collaboration with backend and product teams
    React Native Next.js Monorepo
  • Cureety
    Fullstack Developer (React / React Native / Node.js)
    HEALTH AND WELLNESS
    August 2018 - December 2020 (2 years and 4 months)
    télétravail
    Participation in the development of an oncology telemedicine platform, used by patients and healthcare professionals.

    🎯 Missions

    – Development of the web application in React
    – Development of the mobile application in React Native
    – Development and maintenance of the Node.js backend (REST API)
    – PostgreSQL database modeling and management
    – Integration of analytics tools (Amplitude)
    – Evolutionary maintenance and bug fixing

    ⚙ Technical Challenges

    – Reliability and security of data in a healthcare context
    – Participation in the development of a platform in the structuring phase (startup context)
    Node.js React.js React Native PostgreSQL Amplitude

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Education

  • HEC preparatory class (scientific track)
    Lycée Gay-Lussac
    2011
  • Grande École Program (Master)
    ICN Business School
    2014

Skill set

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