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Kévin YardKY

Kévin Yard

Senior Flutter Developer | Product & AI

€500/day
Paris, FR
8-15 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Kévin

Do you have a mobile app idea or an existing product to evolve?
I support my clients from the design phase through to publication on the iOS and Android stores.

With over 15 years of experience in digital products, including 10 years in Product Management and 4 years in Flutter development, I combine product vision, technical expertise, and modern AI tools to accelerate project delivery.

Recent achievements:

- Migration of Xamarin applications to Flutter for the Luxembourg administration
- Development of geolocation and mapping mobile applications
- Creation of multimedia applications (photo, video, audio)
- Publication and maintenance of applications on the App Store and Google Play
- Development of applications used by several thousand users

My areas of expertise:

- Flutter & Dart
- Software Architecture (Clean Architecture)
- Product Management & Product Discovery
- AI-assisted development (Cursor, Agents, MCP)
- Mapping, geolocation, and offline functionality
- App Store & Google Play publication

What sets me apart:
Unlike a purely technical profile, I can intervene in both product and development aspects.
I can challenge a business need, participate in functional trade-offs, design the architecture, and develop the mobile application.

This dual skill set generally reduces misunderstandings between business and technical teams and accelerates time to market.

Let's talk about your project.
  • French

    Native or bilingual

  • English

    Fluent

Can work on-site
Paris (up to 50km), Lyon (up to 50km), Lille (up to 50km), Marseille (up to 50km), Bordeaux (up to 50km)

Experience

  • Akhilleus Technology
    Akileo Project
    ENTERTAINMENT AND LEISURE
    May 2025 - Today (1 year and 3 months)
    Le Mans, France
    Akhilleus Technology

    Akileo Project

    May 2025 - Present

    Akileo is a mobile application dedicated to preserving and organizing personal memories. The application allows for the long-term archiving of photos, videos, and audio recordings within a fluid and secure mobile experience. Developed in Flutter, it is available on iOS and Android.

    Key achievements:

    - Contribution to functional choices and product evolution prioritization in collaboration with stakeholders.
    - Participation in the design and full development of the Flutter mobile application.
    - Implementation of a modular architecture based on Clean Architecture principles to ensure product maintainability and scalability.
    - Development of multimedia management features: photo, video, and audio capture, compression, thumbnail generation, EXIF metadata management, and content playback.
    - Implementation of local persistence and synchronization mechanisms for fast and reliable access to user data.
    - Development of security features: biometric authentication, secure storage, and mobile permission management.
    - Contribution to technical choices, code reviews, and continuous improvement of software quality.
    - Implementation of automated tests to secure product evolution.

    Technical environment: Flutter, Dart, Riverpod, GoRouter, SQLite, Drift, gRPC, REST API, Git, CI/CD, Docker, Figma, Agile Kanban.
    Flutter Dart Clean Architecture Figma Atlassian JIRA
  • Pix Edition
    Flutter Mobile Developer
    ENVIRONMENTAL
    March 2022 - April 2025 (3 years and 1 month)
    Europe
    Pickfungi

    Founder & Flutter Developer

    Pickfungi is a mobile application for mushroom picking enthusiasts. It allows users to geolocate, organize, and find their picking spots through a mobile experience optimized around mapping, offline mode, and cloud synchronization.

    The application is available on iOS and Android and has several thousand users.

    Key achievements:

    • Design, development, and complete maintenance of the Flutter mobile application.
    • Creation of an advanced mapping experience for managing and visualizing picking spots.
    • Implementation of an offline-first architecture for data access even without a network connection.
    • Development of synchronization mechanisms between local storage and the cloud to ensure data availability and consistency.
    • Integration of a monetization system through in-app purchases and subscription management.
    • Publication and maintenance of the application on the App Store and Play Store.
    • Implementation of automated tests and continuous improvement of software quality.
    • Complete management of the product lifecycle: design, development, deployment, functional evolution, and user support.

    Technical environment: Flutter, Dart, Riverpod, GoRouter, Flutter Map, Geolocator, Supabase, ObjectBox, RevenueCat, REST API, Clean Architecture, Git.
    Flutter Dart Clean Architecture Store Publishing Atlassian JIRA
  • Purple giraffe
    Flutter Mobile Developer
    ENVIRONMENTAL
    June 2024 - August 2024 (2 months)
    Paris, France
    Ministry of the Environment of the Grand Duchy of Luxembourg

    Migration of the "Mäin Offall – Meng Ressourcen" application

    The "Mäin Offall – Meng Ressourcen" application assists Luxembourg citizens in managing and recycling their waste. Used by over 88 municipalities, it offers a personalized collection calendar, reminder notifications, and a map of publicly accessible collection points. The application is available in 4 languages on iOS and Android.

    As part of the platform's modernization, a team of three freelancers was assembled to migrate the application from Xamarin to Flutter.

    Key achievements:

    - Participation in defining the product backlog and prioritizing evolutions in collaboration with business teams and stakeholders.
    - Improvement of the user experience and modernization of several key application workflows.
    - Complete migration of the mobile application to Flutter, based on Clean Architecture principles.
    - Development of new features and adaptation of existing services during the technological transition.
    - Implementation of automated tests to secure the migration and ensure application stability.
    - Contribution to the successful delivery of a new version published on the iOS and Android stores in just 3 months.

    Results:

    - Migration completed on time.
    - New optimized collection workflow for users.
    - Service continuity for tens of thousands of citizens across over 88 municipalities.

    Technical environment: Flutter, Dart, Xamarin, Clean Architecture, Git, Jira, Scrum, Automated tests, Android, iOS.
    Flutter Dart Xamarin Clean Architecture Atlassian JIRA

Recommendations

Jérôme GhesquièreJG
Théo AugustTA
Arnaud RoncariAR
+3
Jérôme Ghesquière and 5 other people have recommended Kévin

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Education

  • Understanding and Using Docker
    Purple Giraffe
    2024
    Suite à ce cours, j'ai complétement migré mon serveur Directus sur un nouveau serveur avec une architecture Docker.
  • Mastering Clean Architecture
    Purple Giraffe
    2024
    J'ai pu mettre en oeuvre cette architecture sur mon projet perso ainsi que sur le dernier projet professionnel auquel j'ai participé.

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