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Johann DesobryJD

Johann Desobry

Flutter Mobile Developer

€400/day
Paris, FR
8-15 years
Flutter
Dart
Mobile Development
iOS
Android

Average response time: 1 hour

Freelancer profile translated to English.
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About Johann

Flutter developer specializing in production mobile apps. I design and evolve a sports betting application published on iOS and Android, used by key accounts, from code to App Store / Google Play releases.
I am involved in: Flutter development (iOS/Android), API integrations, and automation of business workflows with Make and n8n to save teams time.
My thing: deliver concrete results, quickly, that run in production. If you have an app to build, unblock, or a process to automate, let's talk.

  • French

    Native or bilingual

  • English

    Fluent

Can work on-site
Paris (up to 50km)

Experience

  • Feedbee
    Founder & Full-Stack Developer
    SOFTWARE PUBLISHING
    January 2026 - Today (5 months)
    Paris, France
    Design and development of Feedbee, a SaaS platform for user feedback management (feedback, suggestions, public roadmap).
    Project managed end-to-end:
    • Full-stack development of the web application (front, back, database)
    • Architecture and API design
    • Integration of authentication, payments, and multi-tenancy
    • Deployment and production launch
    • Product, UX, and feature definition
    A project covering the entire cycle: from idea to deployed online product.
    React.js Node.js JavaScript REST API SAAS
  • Scorecast
    Flutter Mobile Developer
    SOFTWARE PUBLISHING
    December 2020 - Today (5 years and 6 months)
    Paris, France
    Design and development of a sports betting mobile application in production on iOS and Android, used by key accounts.
    My responsibilities:
    • Flutter / Dart development (iOS & Android) on a high-traffic product
    • Integration of third-party APIs and services (payment, analytics, subscriptions)
    • Management of App Store Connect and Google Play releases
    • Automation of business workflows with Make and n8n
    • Work on performance, compliance (GDPR), and user experience
    Flutter Dart Android iOS n8n

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Education

  • Expert in Digital Communication Engineering and Management — RNCP Level I Title (Master's Degree)
    HETIC
    2020
    Formation Bac+5 de l'école du web HETIC, couvrant l'ensemble de la chaîne numérique : développement web et mobile, ingénierie produit, design (UI, graphique, motion) et marketing digital. Spécialisation vers le développement applicatif : conception, développement et mise en production d'applications web et mobile, gestion de projet et travail en environnement produit.

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