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Guillaume MGM

Guillaume M

Web Developer

€532/day
Grenoble, FR
3-7 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Guillaume

Passionate full-stack developer with several years of experience on ambitious web projects, I design and develop robust, performant, and scalable applications.
My core expertise lies in Ruby on Rails, Node.js, and React, which I use to build modern, maintainable, and user-centric architectures.


💡 What I bring:

A product-oriented approach: understanding business needs before writing a single line of code.
A strong sensitivity to code quality (tests, clean architecture, CI/CD).
Fluid collaboration with design, product, and backend/frontend teams as needed.


🚀 Core Skills:

Backend: Ruby on Rails, Node.js
Frontend: React, Next.js, TypeScript
Databases: PostgreSQL, Redis
DevOps: Docker, GitHub Actions, AWS / Heroku
Methodologies: Agile, TDD, Code review


I am looking for opportunities where I can combine technical impact with product value, whether it's to strengthen an existing team or launch a new project from scratch.


👉 Let's discuss your project and see how I can help you bring it to life.
  • French

    Native or bilingual

  • English

    Fluent

  • Chinese

    Basic

Remote only
Primarily works remotely

Experience

  • Swile
    Full Stack Engineer
    January 2022 - Today (4 years and 5 months)
    • Currently member of a feature team, work on new products features
    • Part of the DevX team for some times, work on different transversal subjects in order to improve the developer experience in Swile
    • CI optimization, Databases anonymization, TypeScript migration, K8s migration...
    Ruby on Rails Node.js React.js Amazon Web Services
  • WIZBII
    Front-end Engineer
    September 2020 - December 2021 (1 year and 3 months)
    Grenoble, France
    • Development of a SaaS for large European banks
    • Development of an internal back-office
    • Design and development of a homepage in Next.js
    • Writing unit and functional tests with jest and cypress
    Angular PHP
  • Algoo
    Front-end Developer
    June 2019 - August 2020 (1 year and 2 months)
    Moirans, France
    - Development of a teamwork platform: Tracim
    - Take part in the management of an open source project through Github
    - Development of POCs to add new features
    - Writing unit and functional tests with mocha, enzyme and cypress
    React.js

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