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Nathan GuiguiNG

Nathan Guigui

Expert React Native | Migration & Mobile Apps

€700/day
10 projects
Paris, FR
8-15 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Nathan

Is your React Native app stuck on an old version? Are the app stores pushing you to update? That's exactly what I've been doing for the past 10 years.

I specialize in migrating production React Native apps: New Architecture (Hermes, Fabric, TurboModules), dependency updates, breaking changes resolution, store redeployment. A task few developers want to do — and that I master perfectly.

🔄 React Native Migration & Updates
→ Audit, migration plan, execution, testing, redeployment
→ Result: a modern, performant, and maintainable app

📱 Website Transformation → Mobile App (Capacitor)
→ Your React/Next.js/Vue.js site becomes an iOS & Android app
→ Push notifications, camera, GPS, biometrics
→ Cost 3 to 5x lower than native development
→ One of the few Capacitor experts in France

⚡ Fullstack Development
→ React Native apps, Next.js sites, Node.js backend

🔍 Technical & Compliance Audits
→ Code, performance, security, ISO 27001, eIDAS, SCA

References:
- Quick — RN app + Next.js site + backend, infra audit (-30% costs)
- Synaps — ISO 27001 compliance for front-end projects
- Genius Station — RN app refactoring, real-time trading APIs
- Sagemcom, Boardigo, Galadrim

100% remote, contract or fixed price. French SAS.
Contact me, I respond within 24 hours.
  • French

    Native or bilingual

  • English

    Fluent

  • Spanish

    Conversational

Remote only
Primarily works remotely

Experience

  • The Geek Family
    Fullstack Developer
    DIGITAL AND IT
    January 2024 - Today (2 years and 7 months)
    Lyon, France
    Responsible for the development and maintenance of the Quick mobile app and website (quick.fr), using React Native for iOS/Android platforms and React.js for the website. Participated in product functional evolution, bug fixing, continuous UX/UI improvement, and close collaboration with product and design teams.
    Node.js React.js React Native Docker Amazon Web Services
  • Taker
    Developer
    TECH
    December 2019 - Today (6 years and 7 months)
    Lyon, France
    Taker is the Junior Consulting firm of Epitech. We respond to client requests in the form of Freelance contracts.

    We provide consulting (Artificial Intelligence, security...), R&D, technical support, system/web/IoT development, infrastructure deployment, system administration, etc.
    React.js Node.js Vue.js Front-End Development Back-End Development
  • Synaps
    Lead Front
    TECH
    February 2022 - August 2023 (1 year and 7 months)
    Lyon, France
    Implementation of identity verification systems (KYC for users, KYB for companies) with integration of third-party services, ensuring regulatory compliance and data security.

    Management and coordination of Frontend teams, task definition, progress tracking, and technical support to ensure code quality and deadline adherence.

    Development of modern and performant user interfaces with ReactJS, focusing on ergonomics, responsiveness, and accessibility.

    Integration of Web3 features including authentication via RainbowKit, Metamask, and Coinbase Wallet, allowing users to connect and interact with the blockchain securely.
    Web3.js RainbowKit Metamask Coinbase Wallet

Reviews

5.0

Out of 6 ratings

LéaL

Léa

Galadrim

Reviewed on 2/17/2022

Nathan communicates well, progresses efficiently, and delivers features cleanly!
M

Marie

SARL AVENIR

Reviewed on 12/11/2020

Nathan is a reactive person and listens to your needs. He puts his heart into his work to help you best and meet your expectations.

Recommendations

LV
Antoine HerbosaAH
Hugo BachHB
+1
Luc Vaudan and 3 other people have recommended Nathan

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Education

  • Expert in Information Technology (RNCP Level 1)
    EPITECH
    Le programme Grande Ecole est le cursus historique d’Epitech. Il se déroule en 5 ans et forme des experts en informatique. Il propose un contenu technique dense et varié, comprenant une diversité de projets de programmation, et couvrant de nombreux langages qui permettront à l’étudiant d’aborder toutes les nouvelles technologies avec sérénité. Les sessions de Piscine, notamment celle de 1ère année, offrent aux étudiants les bases méthodologiques et techniques minimales, ainsi qu’une découverte de « l’esprit Epitech » et les vertus du travail en groupe. Par ailleurs, l’ouverture sur le monde est de mise à Epitech, grâce à 1 an passé à l’étranger en 4ème année dans l’une de nos 80 universités partenaires, et également via un focus exceptionnel donné à l’innovation.

Skill set

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