Freelancer profile translated to English.

Description

I design and develop robust, performant, and scalable React / Next.js web applications for high-traffic products.

With over 8 years of experience in web development, I support product and technical teams on demanding projects, from design to production.

My work includes:

• developing modern React / Next.js / TypeScript applications;

• designing maintainable and scalable frontend architectures;

• creating and evolving Design Systems (Storybook);

• optimizing performance (Core Web Vitals) and accessibility;

• ensuring software quality (testing, clean code, code reviews);

• coaching teams and sharing best practices.

In recent years, I have participated in large-scale projects for Fnac Darty and Infogreffe, with significant challenges related to performance, maintainability, user experience, and code quality.

I pay special attention to collaboration with Product, UX, and Backend teams to build reliable, scalable, and easy-to-maintain solutions.

Today, I help companies accelerate their frontend development while maintaining a high level of technical excellence.

Industry field of expertise

Languages

French
Native or bilingual
English
Fluent

Workplace preferences

Can work on-site

Paris (up to 10km)

Fnac Darty
Front-end Web Developer
E-COMMERCE
September 2024 - December 2025 (1 year and 3 months)
Paris, France
Context:
Design and development of an innovative marketplace platform for the FNAC Darty group, featuring completely redesigned Operator and Seller portals for a modern and high-performance user experience.

Responsibilities:
Design and implementation of a modular and scalable frontend architecture
Development of modern and responsive user interfaces (React/Next.js/TypeScript)
Development of complete CRUD pages with complex forms and advanced administration validation management (React Hook Form, Zod)
Optimization of performance and user experience (Core Web Vitals, lazy loading, HTML semantics, accessibility)
Development and integration of the design system (Storybook)
Implementation of a multi-language internationalization system (i18n)
Setup of a granular role and permission management system
Integration and consumption of REST APIs with optimized state management
Implementation of a comprehensive testing strategy: unit and integration (Jest, React Testing Library)
Daily collaboration with the backend team (PHP/Symfony) to ensure smooth integration and a coherent architecture
Code reviews and application of clean code best practices
Coaching and upskilling developers on the applications.
Next.js Developer React.js Typescript Jest REST APIs
Infogreffe
Front-end Web Developer
PUBLIC SECTOR
January 2023 - September 2024 (1 year and 8 months)
Paris, France
Context:
Complete overhaul of the Infogreffe website using modern technologies to improve maintainability and visibility.

Responsibilities:
Integration of mockups
Development of user journeys
Sharing technical knowledge
Code reviews
Integration of new components from the Design System
Writing documentation (Confluence)
Bug fixing
SEO and performance improvements
Maintenance and version upgrades of various plugins and packages used
Creation of a page builder with StrapiJs
React.js Typescript Strapi REST API GatsbyJS
L'Atelier
Consultant - Front-end Developer
January 2023 - Today (3 years and 7 months)
Paris, France
Responsibilities:
Analysis and optimization of UI/UX for internal projects (ergonomics, user journeys, visual consistency)
Leading technical talks during internal Tech Days
React.js Developer Speaker Typescript TailwindCSS UI/UX Design

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Gaetan Boyron

Fullstack Developer Node.js / React.js / Typescript

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