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Romain F.RF

Romain F.

Full Stack React, Vue.js & Ruby on Rails Developer

€400/day
Metz, FR
3-7 years
JavaScript
Ruby on Rails
HTML5 & CSS3
React.js
PHP

Average response time: 1 hour

Freelancer profile translated to English.
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About Romain

Full Stack Developer with 5 years of experience on production products, I design and deliver robust and scalable web applications.
My specialty: e-commerce architectures and technical migrations, with a React/Vue.js stack on the front-end and Ruby on Rails/Symfony on the back-end.

Some recent achievements:
✓ Led the migration of a high-traffic e-commerce site to Shopify via a custom API architecture (REST/GraphQL), within an IT department of 20 people — gaining scalability and reducing technical debt
✓ Designed a React data table library with an SQL-like search engine (mathematical priorities, nested filters), reusable across several business applications
✓ Complete migration of a client site (legal sector) from a legacy front-end to Vue.js, to improve maintainability and performance
✓ Maintenance and evolution of high-traffic applications using Agile/Scrum methodology, with GitLab and Jenkins CI/CD

How I work: transparent communication, frequent deliveries, honest estimations. I am comfortable working independently on an entire project, or integrated into an existing team on a targeted mission (development, migration, redesign, support for a product team).

Available immediately, fully remote or hybrid in the Grand Est region. Let's discuss your project.
E-commerce
Digital and IT Services

  • English

    Fluent

  • French

    Native or bilingual

Remote only
Primarily works remotely

Experience

  • Indépendant / Micro-entreprise
    Freelance Full Stack Web Developer
    January 2025 - Today (1 year and 5 months)
    Operating as a sole proprietor (micro-entreprise), I undertake full-stack web development projects for various clients and am co-developing Faunarmonia, an independent game using Unreal Engine.

    Activities:
    - Development and consulting on web projects (React, Vue.js, Symfony, Ruby on Rails) — from needs analysis to production deployment
    - Co-creation of Faunarmonia, a rhythm auto-battler game with a team of 2: gameplay programming in Unreal Engine (Blueprint), mechanics integration, preparation for a Kickstarter campaign
    - Active technical watch on the modern JS ecosystem, APIs, and DevOps practices
    Unreal Engine 5 React.js Vue.js Ruby on Rails Symfony
  • 4MURS
    FULLSTACK DEVELOPER
    E-COMMERCE
    February 2023 - January 2025 (1 year and 11 months)
    Marly, France
    Development and maintenance of a high-traffic e-commerce platform (several hundred users/day) and internal business tools. Member of a team of 5 web developers within an IT department of 20 people.

    Major Project - E-commerce Migration:

    • Migration of the site to Shopify
    • Refactoring of the monolithic Ruby on Rails architecture into modular APIs
    • Development of RESTful APIs for integration with Shopify and internal systems
    • Complete redesign of the checkout process: dynamic shipping cost calculation, multi-carrier management, user experience improvement

    Development and Maintenance:
    • Development of e-commerce features and business tools with Ruby on Rails
    • Bug fixing and optimizations on the website and internal applications
    • Management and optimization of MySQL databases for customer service
    • Creation of automation scripts and administration tools

    Support and Training:

    • Technical support for internal staff
    • Training and support for the adoption of new tools
    • Technical and functional documentation
    Ruby Ruby on Rails HTML5 & CSS3 Git Docker
  • Levelitup
    FULLSTACK DEVELOPER
    TECH
    January 2022 - January 2023 (1 year)
    Metz, France
    Within a small team (2 developers), working directly with clients, I was responsible for the development and maintenance of web projects for several clients, including:

    • Vaziva — French gift card provider
    • Legal Finder — Online legal platform

    Main achievements:
    • Complete migration of the Legal Finder website from an HTML/CSS/JS front-end to a Vue.js architecture, to improve product maintainability and performance
    • Maintenance and bug fixing on a critical legacy PHP application
    • Autonomous management of client projects using Agile methodology: estimation, development, delivery, and post-production support
    • Direct communication with clients to understand business needs and propose suitable technical solutions
    Vue.js Git PHP JavaScript React.js
Check out Romain's experience

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Education

  • Professional Bachelor's Degree WMCE
    University of Lorraine | IUT Metz
    2021
  • University Diploma in Technology (DUT) in Computer Science
    University of Lorraine — IUT de Metz
    2020

Skill set

Typescript
Node.js
REST APIs
GraphQL
Shopify
Jenkins
Gitlab CI/CD
Agile methodology
Scrum
MySQL
Git
Vue.js
Docker
Symfony
React.js
JavaScript
HTML/CSS
Ruby on Rails

Categories