You're seeing this page as if you were . The main menu is still yours, though. Exit from immersion
Vincent N.VN

Vincent N.

Expert Front-End Developer - React/React Native/Next.js

€680/day
Poitiers, FR
8-15 years

Average response time: 1 hour

Freelancer profile translated to English.
Back to original language

About Vincent

Launching a new product or is your current application hindering your growth?

I step in to design high-performance interfaces, from the first line of code to optimizing complex systems. My goal: transform your ideas into robust products, delivered quickly, without sacrificing maintainability.

For [Number] years, I've been supporting startups and SMEs with two critical needs:

1. "From Scratch" Creation (0 to 1)
Starting from a blank slate? I lay down solid foundations for your MVP or your future flagship product.

Scalable architecture: Stack selection (Next.js, TypeScript) to handle load.

Speed to Market: Agile development to test your market as quickly as possible.

Zero technical debt: Documented and tested code from day one so your team can take over easily.

2. Redesign & Legacy Rescue
Is your application slow or difficult to evolve? I stabilize the existing.

Audit & Migration: Gradual transition to a modern stack without service interruption.

Takeover: Cleaning up technical debt and securing through tests (Vitest/Cypress).

Optimization: Improving performance and fluidity (UX).
  • French

    Native or bilingual

  • English

    Fluent

Can work on-site
Poitiers (up to 20km), Paris (up to 20km)

Experience

  • Licorn.
    Lead Front-End Developer
    HUMAN RESOURCES
    October 2025 - Today (10 months)
    Forel, VD, Switzerland
    Key Features
    - Interactive Dashboard: Clickable KPIs (To Process, Targetings, New, Active) with dynamic filters
    - Ad Management: Status badges per section, 2-column web layout, internal navigation, ad duplication
    - Candidate Management: Mini-dashboard with clickable counters, 2-column layout for CVs (web)
    - Creation of questionnaires to improve candidate skills and visibility
    - Refactoring of existing code

    Results:Reduced code duplication, improved web UX, reusable components, more intuitive interface
    React Native Expo Typescript redux RTK Query
  • Senoee
    Senior Front-End Engineer - ReactJS
    PHARMACEUTICALS INDUSTRY
    September 2023 - October 2025 (2 years and 1 month)
    Paris, France
    What I implemented:
    • Development of a customizable data collection application, allowing users to adapt forms to their business needs.
    • Integration of geolocation for industrial sites for better field tracking.
    • Creation of a comprehensive administration dashboard (settings, KPIs, campaign tracking), centralizing client-side action management.
    • Strict code compliance via SonarCloud, to prevent bugs, duplication, and ensure a high level of quality.
    • Implementation of a documented design system with Storybook, shared across multiple front-end applications and based on Material UI.
    • Pixel-perfect implementation from Figma mockups, with a focus on UI excellence.
    • Refactoring and improvement of existing technical debt to ensure long-term reliability and performance optimization.
    • Active participation in agile methodology as Scrum Master.
    React.js Typescript TanStack Query Storybook Yarn
  • Odaseva
    Staff Front-end Engineer
    SOFTWARE PUBLISHING
    January 2022 - September 2023 (1 year and 8 months)
    Paris, France
    Ce que j'ai réalisé :
    • • Développement d'interfaces avec ReactJS, HTML, CSS et JavaScript, pensées pour manipuler efficacement des volumes massifs.
    • • Implémentation de la cryptographie côté client avec Web Crypto API pour assurer la sécurité des données (chiffrement/déchiffrement).
    • • Participation à la mise en place de tests automatisés dans une logique QA rigoureuse.
    • • Travail de fond sur l'amélioration des performances globales de l'application (optimisation de rendu, gestion fine des états).
    • • Refonte de modules obsolètes pour assurer la pérennité technique de la plateforme.
    React.js Salesforce JavaScript Typescript

Recommendations

These freelancer profiles also match your criteria

AgathaA

Agatha Frydrych

Backend Java Software Engineer

4.7

(3)

2

BaptisteB

Baptiste Duhen

Fullstack developer

4.6

(4)

5

AmedA

Amed Hamou

Senior Lead Developer

4

(2)

7

AudreyA

Audrey Champion

Web developer

4.3

(3)

4

Education

  • CNCP Certification for Web and Mobile Integrator Developer
    Webforce3
    2018
    Intégration web : • Réaliser l’intégration HTML/CSS dans le respect des normes ; • Appliquer les bonnes pratiques de la «qualité web» (référencement, performance, ergonomie) ; • Créer des pages web interactives avec JavaScript ; • Utiliser les framework front-end Bootstrap et Angular ; • Développer une application mobile hybride avec Ionic et Cordova. Développement web : • Mettre en place une solution web de type CMS avec WordPress ; • Développer des fonctionnalités en PHP ; • Concevoir une base de données ; • Utiliser le framework back-end Symfony.

Skill set

Categories