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Remi DeronzierRD

Remi Deronzier

Supermalter

Senior Mobile Developer Flutter/Dart/Firebase

€445/day
15 projects
Paris, FR
3-7 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Remi

👋 Hi! I'm Rémi, a Flutter developer for over 6 years, the kind who gets involved in important decisions, not just closes tickets.

📱 I've worked on very different projects: consumer apps at Michelin, MVPs from scratch in healthcare, an AI solution for detecting fake prescriptions as CTO of OrdoSafe. What these experiences have in common: I was trusted with thetechnical choicesthat determine whether a project can last 2 years or collapses under the first load increase.

🔧 On the technical side, I work withFlutter/Darton the mobile frontend, and withAWS Serverless and Firebaseon the backend. A stack I know inside out, which avoids unpleasant surprises as the project grows.

🏥 What few Flutter devs master: the **constraints of the healthcare sector**. HDS, GDPR, sensitive data, I've learned to navigate this demanding environment on several projects, and it really changes the way you architect a solution.

🤖 I integrateAIinto my projects when it makes sense, not just to be modern, but because it concretely enriches products (detection, NLP, workflow automation).

💡 What you can expect from me:
-A robust iOS/Android Flutter appfrom a technical and UX perspective
-A serverless backenddesigned for painless scaling
-A point of contactwho understands your product, not just your specs
-The ability to carry a projectfrom idea to store, alone or in a team

If you're looking for someone you can trust with technical decisions, we should talk 🙂 !
  • French

    Native or bilingual

  • English

    Fluent

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

Experience

  • Michelin - LB experience
    Malt logoOn Malt
    Lead Flutter Developer — ViaMichelin (10M+ users)
    TRAVEL AND TOURISM
    January 2025 - December 2025 (1 year)
    Boulogne-Billancourt, France
    Technicallead for Fluttermission within the ViaMichelin team (Michelin Travel Partner), on one of the most used navigation applications in Europe with over **10 million users**.

    Context:the team consisted of native developers (iOS/Android) transitioning to Flutter. My role was to bring Flutter expertise, guide architectural decisions, and accelerate the migration while maintaining the stability of a consumer product with high demands.

    Key Contributions:
    Flutter technical lead for the entire team, redesign and optimization of critical modules: route engine, search, map rendering, user journey screens. Implementation of best practices for architecture, state management, CI/CD, and code quality (DCM, automated tests).

    Concrete Results:
    The transition to Flutter allowed tohalve the team sizeneeded for maintenance,double the delivery speedof new features and bug fixes, and **reduce application startup time by 50%**.

    Relevant Skills:Flutter, Dart, technical lead, scalable architecture, CI/CD, DCM, mobile performance, mapping, team coaching
    Mobile Application Flutter Firebase Android iOS
  • Compagnie Des Alpes
    Flutter Developer — Yuge Mobile Application (Paradiski, La Plagne, Les Arcs)
    ENTERTAINMENT AND LEISURE
    November 2022 - August 2023 (9 months)
    Paris, France
    Support mission within the Flutter team atTheodo**, for **Compagnie des Alpes**, on the **Paradiski Yugeapplication covering one of Europe's largest ski areas, La Plagne and Les Arcs.

    Context:large multidisciplinary team organized in lean mode (3 front developers, tech lead, backend developers, designers, product owner, product manager). My role: contribute to the development of key application features independently, integrating into the team's delivery cycles.

    Features Developed:
    Interactive map and geolocation on the domain, in-app pass purchase, real-time weather and webcams, shuttle and funicular schedule, push notifications. Many critical features for the user experience on the slopes.

    Relevant Skills:Flutter, Dart, mapping, in-app payment, push notifications, API integration, lean methodology, large team collaboration
    Flutter Developer Android iOS Flutter Mobile Development
  • OrdoSafe
    CTO - Flutter AI Solution for Fake Prescription Detection
    HEALTH AND WELLNESS
    August 2023 - July 2024 (11 months)
    Paris, France
    AsCTO and lead developerat OrdoSafe, I managed the entire design and development of an AI solution for detecting fake prescriptions for pharmacists: Flutter mobile application, AWS Serverless API, and NLP model for document analysis.

    Challenging Context:a project with high regulatory stakes in the pharmaceutical sector, with an architecture designed from the outset to comply withHDS and GDPRconstraints related to health data.

    What I Built:
    Flutter iOS/Android application published on the stores, fully serverless API on AWS (Lambda, API Gateway, DynamoDB), integration of the AI detection model, and management of secure access for healthcare professionals. I also recruited and managed a small team of 2-3 people.

    Results:
    Over1,000 pharmacies registeredin the first month after launch. The project was featured inTF1 newsand the team was **invited to the Élysée Palace**, rare recognition for a startup in digital health.

    Relevant Skills:Flutter, Dart, AWS Serverless, NLP, HDS, GDPR, management, recruitment, store publishing, health tech startup
    Flutter Developer AWS API Gateway AWS S3 Firebase AWS Lambda

Reviews

5.0

Out of 4 ratings

F

Foued

developper mobile flutter - Voko

Reviewed on 1/24/2026

extraordinary!!
F

Foued

developper mobile flutter - Voko

Reviewed on 1/24/2026

good responsiveness, quality work, I highly recommend Remi!!

Recommendations

MB
JR
Massy Bouhadoun and 1 other person have recommended Remi

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Education

  • Engineering Degree, Complex Systems Engineering
    ENSTA Paris
    2021
    Diplôme d'ingénieur, Ingénierie des systèmes complexes
  • Specialized Master, Entrepreneurship / Entrepreneurial Studies
    ESSEC - CentraleSupélec
    2022
    Mastère spécialisé, Entrepreneuriat / études entrepreneuriales

Skill set

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