Freelancer profile translated to English.

Description

Lead Frontend Tech specialist in React, Next.js, and TypeScript, with 15 years of experience on high-traffic web platforms (Greenweez, Club Med, Sephora, Louis Vuitton).

Technical referent and Release Manager, I also support the skill development of engineers and the implementation of standards for code delivery and quality.

I work on frontend architecture, stack migrations, web performance, software quality, and release reliability.

What I bring to a team:

→ Performance: Core Web Vitals, bundle optimization, analysis of synchronous/asynchronous API calls

→ Quality: E2E with Playwright, unit & integration tests with Jest / Vitest / React Testing Library

→ Leadership: migrations (React, Next.js App Router), release management, code review, pair programming

React 19 · Next.js 16 (App Router) · TypeScript · GraphQL · Tailwind CSS · Playwright · Unit tests · Storybook

Based between Geneva & Annecy — available for permanent positions and freelance missions, in-person, hybrid, or remote.

→ (Permanent positions)

→ (Freelance missions)

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Industry field of expertise

Languages

French
Native or bilingual
English
Fluent
Spanish
Conversational
Italian
Basic

Workplace preferences

Can work on-site

Genève (up to 20km), Annecy (up to 20km)

Greenweez
Frontend Tech Lead
E-COMMERCE
October 2023 - Today (2 years and 10 months)
Saint-Jorioz, France
Frontend Tech Lead & Release Manager in an agile product team of 3-4 developers — responsible for modernizing the frontend stack and quality strategy.

→ Reduced JavaScript bundle size by 50% by analyzing API calls for SSR rendering and lazy loading non-essential resources, directly impacting Core Web Vitals and SEO
→ Supported 2 junior developers

→ Complete stack migration and modernization: React 18→19, Next.js 13→15 with adoption of the App Router, Node 18→22 migration, without service interruption
→ Implemented E2E testing strategy (Playwright) and quality strategy (Jest, React Testing Library, ESLint, Prettier)
→ Managed 2-3 releases per week
Stack: React 19 · Next.js 15 (App Router) · TypeScript · Tailwind CSS · React Query · Apollo GraphQL
Tests: Playwright · Jest · React Testing Library
Design System: Vite · Storybook
Next.js React.js Tailwind CSS Playwright TypeScript
CLUB MEDITERRANNEE S.A.
Frontend Developer
TRAVEL AND TOURISM
November 2021 - July 2023 (1 year and 8 months)
Paris, France
Development of a data visualization tool used by internal teams and Club Med partners internationally. Team of 8 developers (3 front & 5 back)

→ Design and delivery of the tool in TypeScript / React 18, covering both business indicators for reservations and financial indicators consulted by marketing, technical, and management teams
→ Integrated the Node.js API (Ts.ED) for real-time data feeding for visualizations
→ Implemented unit and integration tests (Jest, Cypress)
→ Agile practices: code reviews, pair programming, continuous delivery within a team of 8 developers

Stack: TypeScript · React 18 · Redux · Ts.ED · Node.js · Tailwind CSS · Jest · Cypress
TypeScript React.js Tailwind CSS Cypress Node.js
ADSPL
Full stack developer
CONSULTING AND AUDITS
June 2018 - June 2020 (2 years and 1 month)
Paris, France
Full-stack architect and developer of a contribution management web application for the ADSPL association, designed and delivered from scratch in a team of 2-3 developers.

→ Definition of the complete project architecture: Firebase modeling (Query-first), GitLab CI/CD, Docker containerization, Heroku hosting
→ Development of the frontend in React 16 / Redux and a documented REST API (Node.js · Express · Firebase Admin) with secure Firebase authentication
→ Integration of the Payline payment provider
→ Implemented unit tests (Jest) and E2E tests (Cypress) with automated deployment on each merge
→ Facilitated team rituals and distributed tasks with complete technical autonomy

Stack: React 16 · Redux · Node.js · Express · Firebase (Auth, Firestore) · GitLab CI · Docker · Heroku · Jest · Cypress · Payline
React.js Node.js User Testing Firebase Cypress