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Jules GrateauJG

Jules Grateau

Expert Frontend React | TypeScript | Design System

€400/day
Poitiers, FR
3-7 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Jules

I've been doing React for 6 years. I've worked on various projects — the most notable being Rakuten's product page in Japan, with all that entails: large audience, performance, and communicating with a team where no one shares the same mother tongue.
My daily stack: React, TypeScript, Node.js, TailwindCSS. I use AI to go faster, not to code for me. It multiplies productivity, but every line that goes into production remains my responsibility — I review, I understand, I control.
I'm comfortable working autonomously, I ask questions when things are unclear, and I deliver clean code without making a fuss.
Available for missions with startups, SMEs, or SaaS product teams.
  • French

    Native or bilingual

  • English

    Native or bilingual

  • Japanese

    Fluent

Remote only
Primarily works remotely

Experience

  • Shift Technology
    Full Stack Developer
    BANKING AND INSURANCE
    January 2024 - March 2024 (2 months)
    France
    • Development of UI components for fraud analysis tools handling large volumes of data.
    • Implementation of multilingual support for critical reporting views.
    • Refactoring and improving the maintainability of frontend components.
    • Regular delivery within an agile team distributed across multiple time zones.
    React.js Typescript JavaScript C# .NET
  • Rakuten Ichiba
    Frontend Developer
    E-COMMERCE
    May 2022 - December 2023 (1 year and 7 months)
    Tokyo, Japan
    • Redesign of the legacy product page to a modern and industrialized React architecture.
    • Collaboration with API teams to improve the accuracy of delivery estimates.
    • Development of SKU features for product variant management.
    • Full cycle management: specs, implementation, testing, post-production fixes.
    • Improved inter-team communication in an international context.
    React.js Typescript JavaScript CSS3 Figma
  • Centre National d'Éducation à Distance (CNED)
    Full Stack Developer
    EDUCATION AND E-LEARNING
    October 2019 - September 2021 (1 year and 11 months)
    France
    • Development of internal applications supporting large-scale online education.
    • Creation of a multimedia monitoring tool improving team responsiveness.
    • Development of a request routing platform for a high volume of users.
    • Active participation in improving code quality.
    JavaScript C# .NET Fullstack CSS3

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Education

  • Computer Development Designer
    ENI Informatique
    2018
    Concepteur Développeur Informatique
  • BTS in Information Technology Services for Organizations
    SIO
    2015
    BTS Service Informatique Aux Organisations

Skill set

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