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Gauthier J.GJ

Gauthier J.

Full-stack Developer Front-end / Back-end

€445/day
Beauvais, FR
15+ years

Average response time: 1 hour

Freelancer profile translated to English.
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About Gauthier

👋 Hello! I'm Gauthier, a passionate full-stack developer with over 15 years of experience. I help startups and companies realize their innovative web and mobile projects.

💪 My strengths:
- Advanced PHP development and secure API design
- Modern web applications (Angular, NestJS) and cross-platform
- Native iOS/Android mobile applications (Capacitor)
- High-performance e-commerce (PrestaShop, WooCommerce)
- DevOps (CI/CD, deployment, server monitoring)
- Infrastructure security and optimization
- Project management and multi-contractor coordination
- Technical SEO and web performance
- Payment solution integration
- Database expertise

🎯 My approach: As a PHP, Nestjs & Angular expert, I develop robust and scalable solutions. I prioritize agility and transparency, with real-time tracking through collaborative tools. Available 24/7!

🚀 Whether you are a startup or an established company, I can assist you according to your needs. Attractive rates starting from €445/day.

💡 Have a project? Let's discuss it!
  • French

    Native or bilingual

  • English

    Native or bilingual

  • Spanish

    Native or bilingual

Remote only
Primarily works remotely

Experience

  • ISAGRI
    Front-end Developer Engineer
    DIGITAL AND IT
    March 2025 - Today (1 year and 5 months)
    Beauvais, France
    Currently employed at Isagri within the Tools division, I design and develop company-wide transversal component libraries. My daily work involves creating robust, maintainable, and reusable UI components that serve as the foundation for all product teams.

    This experience has allowed me to develop specialized expertise in front-end architecture, design systems, and interface development industrialization. I know how to think "component" on a large scale, with a constant focus on consistency, performance, and developer experience.

    As a freelancer, I can assist you with your design system creation or redesign projects, component library development, and more broadly with any front-end project requiring a structured and scalable approach.
    Angular CI/CD front-end-interface-development
  • IDNET
    Web/Mobile Developer Front & Back / Project Management / CMS / Server Administrator
    DIGITAL AND IT
    January 2022 - March 2025 (3 years and 2 months)
    Épinal, France
    - Custom web application development (PHP, Angular, NestJS)
    - E-commerce site creation (PrestaShop, WooCommerce)
    - iOS/Android mobile application development (Capacitor)
    - Responsive front-end integration (HTML5, CSS3, TypeScript)
    - Back-end development (PHP, GraphQL, Node.js)
    - Database management (MySQL, PostgreSQL, MariaDB)
    - CMS integration (WordPress, Elementor)
    - Payment solution implementation (CinetPay, Stripe)
    - Server configuration and optimization
    - Custom administrator interface development
    - Third-party API and service integration (geolocation, authentication)
    - Application maintenance and evolution
    - Platform security and monitoring
    - Data and system migration
    - User training and documentation
    - Technical consulting and expertise
    NestJs Angular PHP Figma HTML/CSS/JS
  • IDNet Service
    Web/Mobile Developer Front & Back / Project Management / CMS
    DIGITAL AND IT
    January 2015 - January 2022 (7 years)
    Pontarlier, France
    - Development of showcase and e-commerce websites using WordPress/PrestaShop
    - Responsive integration (HTML5, CSS3, jQuery)
    - PHP/MySQL/SQL back-end development
    - Server configuration and optimization
    - Hosting solution implementation
    - Maintenance and evolution of existing sites
    - Custom feature development
    - Payment system integration
    - Site migration and security
    - User training
    PHP Wordpress HTML/CSS/JS

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Education

  • University Diploma in Technology in Computer Science
    IUT Nancy-Charlemagne
    2011
    - Bases solides en développement et algorithmique - Programmation orientée objet et bases de données - Gestion de projets informatiques en équipe - Réseaux et systèmes d'exploitation - Mathématiques appliquées à l'informatique
  • Scientific Baccalaureate
    Lycée André Malraux
    2009

Skill set

Categories