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Corentin FavotCF

Corentin Favot

React | React Native | Node.js

€400/day
1 project
Nantes, FR
3-7 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Corentin

Transforming your product visions into scalable and inclusive technical architectures.

Accompanying startups and scale-ups for over 5 years, I act as a Full-Stack Lead Developer with a strong conviction: engineering must serve product growth ("Product-Led Engineering").

My expertise focuses on three strategic pillars for your business:

Scaling

I have supported the evolution of applications from the MVP stage to over 10,000 monthly active users (Flashbird). I design modular and hexagonal architectures capable of supporting a 5x growth without major technical debt.

Accessibility & Compliance (WCAG / EAA)

With the entry into force of the European Accessibility Act (EAA), accessibility has become a market lever. I specialize your products in WCAG 2.1 AA compliance, transforming a legal constraint into a competitive and inclusive advantage.

Full-Stack & IoT Expertise

I master the entire value chain, from interaction with hardware (IoT/BLE) to resilient cloud infrastructures:

Mobile: React Native, Expo, Bluetooth integration (BLE).

Web: Next.js, React, Multi-brand Design Systems.

Backend: Node.js, Bun, PostgreSQL, AWS.

Quality: Test-Driven Development (TDD), CI/CD.

Why collaborate with me?

Former Lead at Ippon Technologies for major accounts (Sorégies, Beneteau, Manitou), I know how to navigate between the business stakes of decision-makers (CEO/CTO) and the needs of end-users. My role is to reduce your "Time-to-Market" while ensuring high-level technical robustness.

Let's discuss your next technical milestone.
  • French

    Native or bilingual

  • English

    Native or bilingual

Remote only
Primarily works remotely

Experience

  • IPPON TECHNOLIGIES
    Lead Dev React React Native
    DIGITAL AND IT
    January 2024 - Today (2 years and 7 months)
    Nantes, France
    Key Projects:Manitou Group & Bénéteau Group

    Manitou Group (myMANITOU Application – Fleet Management)

    Firebase to .NET Core Migration:

    Front-end Adaptation:Updating the React Native application for compatibility with the new .NET backend, including adjusting API calls, error handling, and mobile-side performance optimization.

    Technical Support:Assisting the backend team by sharing the existing Firebase architecture (data structure, business logic, critical endpoints) to facilitate the design of the new .NET system.

    Cross-functional Collaboration:Participating in technical workshops to align front-end needs with backend architecture choices (API contract validation, integration testing).

    Implementation of Analytics and Improvements:

    Google Analytics 4 (GA4) Integration:SDK configuration, definition of key events (user interaction tracking), and validation of collected data.

    Design System:Contribution to the creation of a reusable component library for all group applications, in collaboration with UI/UX teams.

    Bénéteau Group (SeanApps Application – Stock Management)

    Front-end Development:Designing the application from scratch with Next.js, implementing a hexagonal architecture, and collaborating with the backend to define interface contracts.

    Custom Design System:Creating a UI/UX component library with Storybook and customizing the Shadcn library, in close collaboration with the design team.

    Software Quality:Maintaining code coverage above 75% through unit tests (Vitest) and continuous integration, ensuring project stability and scalability.
    React Native Next.js Web Architecture TailwindCSS React.js
  • SMT Performances
    Mobile Developer
    TECH
    June 2021 - Today (5 years and 1 month)
    Nantes, France
    **Context**: Development of **Flashbird**, a GPS tracking application for motorcyclists and professional fleet management, as well as a dedicated web app for businesses.


    Mobile Development (Flashbird):
    -Application Scale-up:Successful transition from an MVP to a robust product, with a monthly active user growth from **2,000 to 10,000+**, through performance optimization and the addition of strategic features.
    -GPS Tracking and User Interface:
    - Integration ofMapboxfor dynamic display of routes, speed, and inclination in real-time.
    - Redesign of the user interface for fluid navigation and simplified GPS data management.
    -Smart Anti-theft System:
    - Development ofmulti-channel alert management(SMS, automated calls, Firebase notifications, emails) with user-customizable thresholds.
    - Design of an intuitive interface to enable/disable alerts and monitor device status.

    Technical Innovations:
    -Fall Detection for Motorcyclists:
    - Collaboration withLiberty RiderandSAMUfor a system analyzing speed, tilt angle, and GPS coordinates, triggering an emergency call that can be canceled by the user in case of a fall.
    -GPS Tracker Updates via Bluetooth (BLE):
    - Close collaboration with the IoT team to adapt firmware based on battery type.

    Unified Design System:
    - Design of a reusableUI/UX component library(React/TypeScript), in partnership with the art director, to harmonize the experience across the mobile app, web app, and e-commerce site.
    - Result:-30% development timeon new projects and bug reduction through standardization.
    React Native Figma PostgreSQL Mapbox Bluetooth Low Energy
  • made in moon
    Front-end Web Developer
    TECH
    April 2021 - April 2021
    Nantes, France
    Context:Freelance mission for an interactive digital book publisher targeting speech therapists and the **French National Education system**, aiming to enhance educational tools through FROG format eBooks.

    Development of Interactive Features for eBooks:
    -Custom TypeScript Library:Creation of a library enabling advanced features in eBooks:
    - Reading customization (font change, syllable highlighting via a color system).
    - Educational tools (rhyme identification, audio player integration, reading aid bar).
    -Interactive Toolbar:Development of a React/TypeScript interface allowing speech therapists to dynamically access eBook features, with ergonomics adapted for educational use.

    Technical Challenges and Compatibility:
    -Internet Explorer Support:Adaptation of the React application to ensure functionality on tablets used by the National Education system, usingpolyfillingtechniques and performance optimization.
    -Evolutive Maintenance:Refactoring of existing code to improve maintainability and facilitate the addition of new educational features.

    Collaboration and Deliverables:
    - Close coordination with the editorial team to align technical tools with end-user needs (speech therapists, teachers).
    - Technical documentation and training for internal teams for autonomous use of the library and toolbar.
    React.js TypeScript

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Certifications

  • Web Application Designer-Developer
    Le Wagon
    2021
    https://www.lewagon.com
    Ruby on Rails Git PostgreSQL GitHub Front-End Development JavaScript HTML5 Back-End Development SASS CSS3

Skill set

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