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Marc S.MS

Marc S.

Mobile Developer React Native | Android & iOS

€500/day
Strasbourg, FR
8-15 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Marc

Senior mobile engineer with 25+ apps published on the Play Store and App Store.

I develop new features and complete applications in React Native, Android & iOS. I create fast and viable MVPs, handle crash fixes, performance optimization, and full monetization (IAP, subscriptions, Ads).

Firebase integration, analytics, monitoring, and tracking tools included. I understand your needs in 1-2 exchanges, I build custom solutions, and I manage the project from development to official store publication.

Bonus: I also develop custom Python tools (scraping, automation, ASO, data analysis...) to boost your productivity.

With 10+ years of experience and apps that I've scaled to several million downloads myself, I am a trusted partner with ultra-responsive communication.

Looking for a reliable mobile developer to deliver performant and monetized apps?

Contact me, let's discuss your project in 15 minutes.

Find my 5.0/5 customer reviews (23 reviews) on Fiverr → nepturndigital
  • French

    Native or bilingual

  • English

    Fluent

Remote only
Primarily works remotely

Experience

  • Nepturn
    Founder and Full Stack Mobile Developer
    June 2016 - Today (10 years)
    Strasbourg, France
    Design and development of 25+ mobile applications (native Java/Kotlin apps, 2D games in Unity C#, React Native). Play Store & App Store publication.

    Integration of analytics & monitoring (Firebase, Crashlytics, Amplitude), IAP/subscriptions/Ads, and performance optimization (profiling, binary size reduction).

    Development of Python tools: YouTube Performance Analyzer, Dynamic eBook Generator for unique quizzes (MCQs), Media Prospecting Automation, Play Store ASO Analyzer, and other automation tools (scraping, office automation).

    Refactoring of a marketing content generator (Laravel), implementation of Deep Learning prototypes (image classification - TensorFlow/PyTorch), and other projects.
    React Native Expo Android iOS Python
  • Crédit Agricole Alsace Vosges, Pôle Intranet Infocentre
    WEB Developer
    September 2014 - May 2016 (1 year and 8 months)
    Strasbourg, France
    Study and development of Intranet applications in PHP: Management dashboards, workflows (Human Resources, Communication Department)

    SQL Server queries/procedures, migrations.
    PHP MySQL jQuery Front-end Interface Development Specifications
  • Les éditions dipsomanes
    WEB Developer
    January 2013 - December 2014 (1 year and 11 months)
    Strasbourg, France
    Design and development of the site in Java/J2EE. Production of ebooks (EPUB), cover creation (Photoshop).
    Java/JEE jQuery

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Education

  • Preparation and Computer Engineering degree
    l'ENSEIRB
    2006
    Préparation et diplôme d'ingénieur d'informatique
  • Preparatory Class Math-sup Math-spé
    Lycée Fabert
    2003
    Classe Préparatoire Math-sup Math-spé

Skill set

Categories