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Gregory CailletGC

Gregory Caillet

React / Web Developer

€300/day
Paris, FR
3-7 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Gregory

React & React Native Developer | Web & Mobile Applications

Looking for a React or React Native developer capable of designing, evolving, or maintaining a reliable and performant application? I can assist you in developing your projects by providing sustainable technical solutions, clean code, and transparent communication.

Throughout my experiences, I have participated in the development of web and mobile applications for demanding professional environments. I have notably contributed to the transformation of a web ERP into a mobile application, the development of new features, the integration of REST APIs, the creation of complex interfaces, and the continuous improvement of performance and code quality.

What I can do

• Develop React and React Native applications
• Create modern, responsive, and intuitive interfaces
• Develop new business features
• Maintain and evolve existing applications
• Integrate REST APIs and manage data exchange
• Optimize performance and fix bugs
• Architect reusable and maintainable components
• Adapt web applications for mobile
• Participate in all project phases: analysis, development, testing, and delivery

Technologies

React • React Native • TypeScript • JavaScript • Next.js • Redux • Context API • REST API • Git • GitLab • CI/CD

My way of working

I favor rigorous development, regular communication, and strong involvement in each project. My goal is to deliver performant, scalable, and easy-to-maintain solutions, while respecting deadlines and business needs.

Whether you want to develop a new application, modernize an existing project, or strengthen your team, I would be delighted to discuss with you to find the solution best suited to your needs.
  • French

    Native or bilingual

  • English

    Fluent

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

Experience

  • Axelor
    React Developer
    TECH
    September 2022 - Today (3 years and 10 months)
    Champs-sur-Marne, France
    Frontend Development in React: Creation of dynamic and performant user interfaces with React and its ecosystem (Redux, Context API, etc.).

    Mobile Development: Experience with React Native for cross-platform mobile applications (iOS/Android).

    Conversion of a Web ERP into a Mobile Application: Development and adaptation of different ERP modules for an optimized mobile experience with React Native.

    Development of ERP Modules on Mobile: Integration of essential ERP functionalities in mobile-first, ensuring continuity with the web version.

    Creation of React Views: Development and optimization of React components and user interfaces, adhering to UI/UX best practices.

    Freelance and Collaboration: Independent and team work on various projects, meeting deadlines and client requirements.
    React Native React.js Android iOS Typescript
  • DATAPOLE
    IT Project Officer / Front-End Developer
    DIGITAL AND IT
    September 2020 - September 2022 (2 years)
    Rueil-Malmaison, France
    Front-End Development in React

    Development and maintenance of modern web applications with React. Creation of responsive user interfaces, integration of new features, and continuous improvement of user experience.

    Maintenance and Evolution of Existing Applications

    Participation in the evolution of applications developed in React, Angular, and Java. Needs analysis, bug fixing, refactoring, and application performance improvement.

    Development of New Features

    Design and implementation of features meeting business needs, in collaboration with functional and technical teams, while ensuring code quality and maintainability.

    Release Management

    Participation in the application lifecycle: development, validation, acceptance testing, release preparation, and monitoring of production releases to ensure reliable deployments.

    Agile Collaboration

    Daily work with technical and business teams to analyze needs, propose suitable solutions, monitor progress, and ensure deadlines are met.

    Software Quality and Continuous Improvement

    Bug fixing, optimization of existing code, improvement of application stability, and participation in best development practices (Git, code reviews, documentation).
    React.js React Native JavaScript Angular Java

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