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Guillaume GautierGG

Guillaume Gautier

Supermalter

Senior Front-End - Design System Expert đź§©

€600/day
11 projects
Paris, FR
8-15 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Guillaume

Experienced front-end developer for over 10 years, I have specialized in Javascript. Throughout my career, I have made code quality and scalability my mantra, in order to offer relevant code according to your needs. I can support you on all types of projects, from creation to maintenance. Having an appetite for design, I know how to work with your teams to bring your project as close as possible to your expectations.
  • French

    Native or bilingual

  • English

    Fluent

Remote only
Primarily works remotely

Experience

  • Freelance
    Full-stack Developer
    SOFTWARE PUBLISHING
    December 2016 - Today (9 years and 5 months)
    Assisting multiple companies in their digital transformation. Creation of technical teams to best meet needs. Work in collaboration with design teams. Integration into existing teams for support.
    React Native React.js
  • Lola Health
    Chief Technology Officer
    BANKING AND INSURANCE
    February 2022 - November 2024 (2 years and 9 months)
    Design and overall implementation of applications and APIs. Recruitment and management of technical teams.
    NestJs React.js React Native PostgreSQL Material UI
  • Chronogolf
    Front-end Developer
    SPORTS
    September 2018 - June 2019 (9 months)
    Montreal, QC, Canada
    Developer position integrated into a team of 10 people. Feature development, working on POCs for advanced features.
    Angular Material UI

Reviews

5.0

Out of 2 ratings

A

Arnaud

Sunday SAS

Several months project

-

Reviewed on 9/26/2025

I had the opportunity to collaborate with Guillaume on a strategic project for our business, and his contribution was decisive. Guillaume is proactive, does not hesitate to dive into legacy code when necessary, and knows how to work effectively in a team. He also demonstrated his ability to supervise and support more junior developers. His role was key in the emergence of a design system derived from our existing codebase and in the delivery of an application within the given deadlines.
Y

Yann

Check&Visit

Reviewed on 12/16/2024

We had the chance to collaborate with Guillaume as a front-end developer for several essential missions for the development of our new internal platform. Guillaume distinguished himself by his professionalism, his technical expertise and his ability to quickly adapt to our specific needs. He proposed relevant solutions and delivered clean code, while respecting deadlines. His fluid communication and team spirit also greatly facilitated collaboration. We are very satisfied with his work and will not hesitate to call on him again for future missions.

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Education

  • Bachelor's degree, DĂ©veloppement Web
    EEMI
    2017
    Bachelor's degree, Développement Web
  • BaccalaurĂ©at, Sciences et technologies de l'industrie et du dĂ©veloppement durable
    Notre Dame de Sion Evry
    2014
    Baccalauréat, Sciences et technologies de l'industrie et du développement durable

Skill set

Categories