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Florent SebagFS

Florent Sebag

🚀 Mobile Developer | Android | Tech Lead

€500/day
4 projects
Paris, FR
3-7 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Florent

📱Need a fast, scalable, and optimized Android application?

With 6+ years of experience in Kotlin, I build high-performing mobile applications tailored to user and market demands. My approach is simple: offer effective, structured solutions that address your business challenges.

đź’ˇ **What I bring to you**:

âś…A solid and scalable architecture
I apply Clean Architecture principles, structuring your code to ensure maintainability and scalability. I master best practices (MVVM, Modularization, Jetpack, etc.) to guarantee a reliable technical foundation.

âś…An application that lasts
My goal is not just to deliver a functional application, but one that remains performant and stable over time. Well-designed code today avoids costly problems and redesigns tomorrow.

âś…Tailored technical support
As a Tech Lead, I can not only code but also guide your team on Android and Kotlin best practices. I help structure projects, upskill your developers, and streamline technical processes.

🎯Why work together?
I don't just code; I support you at every stage of the project, providing informed technical insight to ensure your application's robustness and scalability. My objective is to deliver a solution that precisely meets your needs, while optimizing every aspect of development to ensure an effective, reliable, and maintainable long-term result.

🚀Does your Android application need a Kotlin expert?
Let's talk and find the best solution for your project!

  • French

    Native or bilingual

  • English

    Fluent

  • Spanish

    Native or bilingual

Can work on-site
Paris (up to 10km)

Experience

  • Openbank
    Android Tech Lead - Kotlin
    BANKING AND INSURANCE
    January 2022 - January 2025 (3 years)
    Madrid, Spain
    *Android Tech Leadfor amulti-countrybanking application.
    • Managed a team of 4 developers.
    • Major contribution to the launch of the Mexican application (**+1M users** in the first year).
    • Application composed of 15+ repositories, usingClean Architectureand **MVVM**.
    • Migration to **Jetpack Compose**, use of Koin and Coroutines.
    Android Kotlin MVVM Clean Architecture Koin JUnit Jetpack Compose
  • Epitech
    Lead Teacher
    EDUCATION AND E-LEARNING
    May 2020 - December 2021 (1 year and 8 months)
    Barcelone, Spain
    • Organized courses inC, C++, Java, and PHPfor 1st to 3rd-year students and for the CodingAcademy Bootcamp.
    • Responsible for **4 Android courses**.
    • Monitored students and managed the teaching staff.
    C C++ Java PHP Laravel Kotlin Wordpress HTML/CSS Python
  • Worldline
    Android Developer - Kotlin
    SOFTWARE PUBLISHING
    November 2019 - May 2020 (6 months)
    Lyon, France
    • Developed Android applications for several major French banks.
    • Responsible for creating aWhite Label applicationintended for new clients.
    • Implemented a **custom SDK**, used OkHttp, Retrofit, Dagger2, RxJava, NavigationComponent, Material Design.
    Android Kotlin MVVM Clean Architecture

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Education

  • Master in Information Technology
    Epitech
    2020
    Une école où tout est basé sur la méthodologie projet : Pas de réel cours, seulement des projets informatiques à développer. Même système & même projets que l'école 42.

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