Freelancer profile translated to English.

Description

👋 Introduction

My name is Mathias and I am a React.js front-end developer.

I started coding with the Lua language at 13 thanks to the video game Dofus (developing bots, private servers, etc.) where I resold the money generated by these activities.

👨 About me:

Freelancer since 2019, I previously worked in the army (electronic warfare, intelligence), and I am currently a front-end developer on the Javascript stack. I master React.js, React Native, Redux, Typescript, and use related technologies like Zustand, Jotaï, React-query, Redux Toolkit, React-hook-form, Zod, Shadcn, Jest & Puppeteer...

🚀Passionate:

Check for yourself:

- 3167 (Github+Gitlab) contributions in 2023, approximately 9 code modifications per day

- 6172 (Github) in 2025 up to today, approximately 19 code modifications per day

- Author of an open-source project with 6.7K stars on Github

ℹ️Good to know:

Passionate about sports, I developed a software as a full-stack developer (Node.js, MySQL, Typescript, React, Redux - Redux Toolkit / RTK) used by over 2600 coaches.

I am also known for bringing not only a technical vision but also a user-oriented one. I am proactive in suggesting mockups and different user journeys.

💻️Remote / On-site / Hybrid?

I am available for freelance missions, primarily remote, open to hybrid (possibility to travel once every X days/week throughout France). Conditions to be discussed together 😇

📈Keywords / SEO

I am available to put my skills at the service of your start-up or company for:

Programming, improving, integrating, debugging in HTML/CSS, Javascript, React.js, Redux, Typescript, NodeJS, ReactNative, NextJS

- integrating a front-end developer team

- participating in the analysis and design of your project

- developing features

- ...open to proposals

See you soon,

Mathias 👋

Languages

French
Native or bilingual
Romanian
Native or bilingual
English
Fluent

Workplace preferences

Can work on-site

Strasbourg (up to 50km), Paris (up to 50km), Mulhouse (up to 50km), Belfort (up to 50km), Nancy (up to 50km)

Fit'Distance
Fit'Distance
HEALTH AND WELLNESS
February 2023 - Today (3 years and 6 months)
Strasbourg, France
Front-end + back-end development from scratch.
Over 3500 coaches, it is the simplest CRM on the market for sports coaches 🏃
React.js Node.js Typescript Full-Stack Developer Next.js
ARTE France Développement
Front-end Developer
FILM AND AV
July 2023 - December 2023 (5 months)
Vanves, France
Complete redesign of the Educ'ARTE platform (https://educ.arte.tv/) to V2, for teachers and students.
Typescript React.js Next.js SCSS
KATALEYA BESTRONG 💪
Mobile Front-end Developer
SPORTS
May 2022 - Today (4 years and 2 months)
Paris, France
Having a community of over 500K followers, @karoline.ro and her partner @rudy_fgt contacted me to:

- Redesign and fix the mobile application offering sports and nutrition programs, a blog, and progress tracking, all managed by an administration dashboard. Upgraded React Native from 0.63.3 to 0.72.6
- Develop and maintain the web platform (similar features to the app, member area, and user subscriptions)
- Develop and maintain the e-shop (previously manual on the same environment as the web app, now migrated to custom Shopify)

Play Store / App Store: bestrong
Website / Web platform: https://www.bestrong-app.com
React Native React.js Typescript redux Next.js Symfony

Check out Mathias's experience

Sylvain

Sylvain Merle

Reviewed on 11/25/2022

This is not the first time I have worked with Mathias and despite the different contexts, his work, his curiosity, his motivation, his efficiency, and his suggestions have not changed and have allowed me to successfully complete my project and deliver a result particularly faithful to my expectations within the allotted time! His code, which is part of a clean code & clean architecture approach, could be taken over without gaps by a new developer. A profile I highly recommend!