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Yann Le MatYL

Yann Le Mat

Mobile & Web Developer | Booking Specialist

€610/day
Saint-Étienne, FR
3-7 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Yann

✅ What I can develop for you:

• 📅 Booking systems (slot management, payments, cancellations)
• 📍 Geolocation (real-time positioning, proximity filters)
• 🤖 Matching algorithms (experience personalization)
• 📸 Photo retrieval from device (upload, filters, compression)
• 🔐 Authentication & Login (email, social networks)
• 🔔 Push & in-app notifications

My name is Yann, a computer engineer and doctor of sports science (STAPS). Thanks to my multidisciplinary background, I have developed several innovative mobile applications (iOS and Android), websites, and software integrating external sensors and interactive interfaces.

Some notable achievements:
• ✂️ AYEDN: mobile application connecting clients with hairdressers/barbers, featuring profile management, recommendation algorithm, and geolocation for a personalized experience.
• 🏋️ TRAINIMM: sports tracking application for a sports science lab, integrating Strava, Garmin, and Suunto APIs to retrieve training data. Available in 3 languages, it facilitates field scientific studies.
• 🎥 MOVINLAB: platform for creating physical activity programs including exercise videos to guide users.
• 🔬 Website for an MS research study: web application to supervise a scientific study with a drag & drop system for direct delivery of activity plans to the mobile application.

🔎 Available for your mobile and web application projects, I am known for my proactive approach, my rigor, and my passion for developing quality digital solutions.

Currently available for mobile and web application projects, I am known for my proactive approach, my rigor, and my passion for quality digital solutions.
  • French

    Native or bilingual

  • English

    Fluent

Remote only
Primarily works remotely

Experience

  • MICHELIN
    Front-End Developer
    March 2025 - Today (1 year and 5 months)
    Lyon, France
    Development and maintenance of iOS and Android mobile applications in React Native and TypeScript. Participation in the design of new features, REST API integration, application state management, performance optimization, and user experience improvement. Collaboration with product, design, and back-end teams in an agile environment, with a high level of requirement for code quality, security, and maintainability.
    React Native Mobile Application Agile Methodology REST APIs iOS Development
  • Université Jean Monnet
    FANTASI SMART - 2D Game Software for Children with Conditions
    PUBLIC SECTOR
    September 2024 - December 2024 (3 months)
    Saint-Étienne, France
    An interactive software developed in Python for Windows, combining gaming and scientific evaluation to make muscle testing more accessible and motivating, especially for children with SMA (Spinal Muscular Atrophy) and ASI (Spinal Muscular Atrophy).

    2D Game with Avatar Selection: Users choose their avatar and perform fun actions like eating objects (bones, bananas, etc.) to represent muscle contractions. The game is designed to make strength tests more engaging.
    QIF test (quadriceps-intermittent-fatigue): The software offers an incremental test where users must contract their muscles at different intensity levels (10%, 20%, 30%, etc.). Each force level is represented by a specific action in the game.

    Two distinct interfaces:
    Player Interface: Main view with the 2D game, fun and immersive.
    Experimenter Interface: Management mode with:
    A MVC (Maximum Voluntary Contraction) mode to calibrate force levels.
    Demo and game modes to supervise sessions.
    A dashboard displaying parameters and test progress in real-time.

    User Management: Experimenters can add and manage participant profiles, with local data backup in a SQLite3 database.
    Scientific Study: This software is specifically designed for a study on the evaluation of muscle strength in children with SMA (Spinal Muscular Atrophy) and ASI (Spinal Muscular Atrophy).

    This project illustrates the successful integration of technology and gamification to meet specific scientific and medical needs.

    A fun and scientific software, designed to evaluate muscle strength in children through an interactive game, transforming clinical tests into engaging experiences.
    Python sqlite3
  • AYEDN
    Full-Stack Mobile App Developer | AYEDN for Barbers
    HEALTH AND WELLNESS
    June 2024 - Today (2 years and 2 months)
    Saint-Étienne, France
    I developed AYEDN, a revolutionary mobile application dedicated to the world of barbers and discerning clients looking to find a professional matching their style. AYEDN features a dual interface: one for individuals seeking a barber and one for professionals managing their business.

    For clients, AYEDN offers a personalized recommendation system based on geolocation and preferences, as well as precise filters (skills, prices, availability, etc.). Users can view barber profiles, check reviews, and directly book appointments.

    For barbers, AYEDN is a comprehensive management tool allowing them to track their schedule in real-time, organize their time, manage their services, and increase their visibility through a richly detailed profile.

    I led the project from start to finish, handling front-end (React Native) and back-end (Flask, Python) development, as well as configuring a MySQL database. I also managed the repositories on the Apple and Google Play platforms.
    React Native flask Python Google API Push Notifications iOS Development Android Development

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Education

  • Engineer
    ECE Paris
    2017
  • PhD
    Université Jean Monnet
    2023

Skill set

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