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Matthieu FantoniMF

Matthieu Fantoni

Senior Software Engineer

€500/day
Paris, FR
8-15 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Matthieu

Front-end / Fullstack Developer with a strong focus on Front-end, and over 10 years of experience in web development.

Specializing in React and TypeScript, I work on the development, takeover, and maintenance of web applications, with a strong emphasis on code quality, readability, and production reliability.

I have experience in structured application environments (IT service companies, large corporations, regulated contexts), working on both functional evolution projects and operational maintenance and incident correction.

My primary expertise lies in Front-end development. My Fullstack .NET background allows me to understand and effectively integrate backend APIs, without positioning myself as a backend expert.

Available immediately for missions with a clear scope, primarily Front-end oriented.
  • French

    Native or bilingual

  • English

    Fluent

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

Experience

  • ESN
    Frontend React Developer
    DIGITAL AND IT
    February 2022 - November 2024 (2 years and 9 months)
    Paris, France
    Worked as a Senior Frontend Developer for major clients (notably BIC) and on strategic internal projects. I designed and developed critical features for a data access rights management application (Tabular Permission).

    My role involved active participation in Front-End architecture choices, UX/UI decisions, and defining API contracts in close collaboration with Back-End teams. I also worked on redesigning existing interfaces to optimize performance and user experience.

    Environment: React.js, TypeScript, SASS, Azure DevOps.
    TypeScript React.js HTML/CSS SASS/SCSS Azure DevOps
  • Castelis
    Frontend Developer
    DIGITAL AND IT
    January 2022 - June 2022 (5 months)
    Ivry-sur-Seine, France
    Frontend development mission for major showcase websites, notably for the L'Oréal group.

    My primary responsibility was to ensure "Pixel Perfect" integration of complex mockups provided by the design team, while ensuring loading performance and smooth animations for a high-end customer experience.

    Environment: React.js, JavaScript, Hooks, Context API, Sitecore, HTML5, CSS3.
    React.js HTML/CSS TypeScript Front-end Development Sitecore
  • Insight Technology Solutions
    Frontend Developer Consultant
    DIGITAL AND IT
    October 2019 - December 2021 (2 years and 2 months)
    Paris, France
    Consultant involved in two strategic missions for large clients:

    ROOLE (formerly Club Identicar) - Insurance & Services

    Phase 1 (.NET MVC): Worked on the VOB2C project and maintenance. I acted as Integration Lead and provided technical mentoring to a junior developer on the MVC part.

    Phase 2 (React): Transition to the new stack during the redesign of the Member Area. I was responsible for integrating React interfaces, ensuring code quality and adherence to mockups.

    PARIS AIRPORTS (ADP) - Industry / Infra

    Full Stack design and development of a critical intranet application for managing contractor presence on construction sites.
    Robust development in .NET Core, requiring a high degree of autonomy on the Back-End.

    Overall Environment: React.js, TypeScript, C#, .NET Core, ASP.NET MVC, SQL, Storybook.
    React.js TypeScript Front-end Development ASP.NET MVC REST APIs

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Education

  • Computer Developer Designer (RNCP Level 6)
    IEF2i
    2012
    Concepteur Développeur Informatique (RNCP Niveau 6)
  • Web Developer Training
    AFPA
    2010
    Formation Développeur Web

Certifications

Skill set

Categories