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Walig LussotWL

Walig Lussot

Senior Android Developer Kotlin

€550/day
Rennes, FR
8-15 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Walig

Senior Android Developer specialized in Kotlin and Compose, with over 12+ years of experience in designing high-performance and scalable mobile applications.


I support startups and large groups (Deezer, Ouest-France…) in the development, optimization, and maintenance of their Android applications, with a focus on code quality, performance, and user experience.

I have notably contributed to high-audience projects (several million users), significantly improving the stability, performance, and maintainability of applications.

My expertise:

• Native Android Development (Kotlin / Java)
• Jetpack Compose & Modern UI
• Architecture (MVVM, Clean Architecture, MVI)
• Performance Optimization & Crash Reduction
• REST APIs, Retrofit, GraphQL
• Firebase (Analytics, Crashlytics, Messaging)
• Testing (unit, instrumentation)

What I bring you:

• A robust, maintainable, and scalable app
• Clean and documented code
• Technical quality improvement for your project
• Smooth and proactive collaboration

Available for:

✔️ From scratch development
✔️ Project takeover
✔️ Technical audit & optimization
✔️ Team reinforcement
  • English

    Fluent

  • French

    Native or bilingual

Can work on-site
Rennes (up to 20km)

Experience

  • Deezer
    Android Developer
    April 2025 - January 2026 (9 months)
    Context:
    Streaming application with +5M users

    Interventions:
    Architecture evolution
    critical feature development
    team mentoring

    Results:
    stability improvement
    delivery acceleration
    user experience improvement
    Android SDK Android Jetpack Android Development Android Studio Kotlin
  • Ouest-France
    Lead Android Developer
    April 2024 - April 2025 (1 year)
    Rennes, France
    Context:
    News application with a high volume of users

    Interventions:
    partial technical refactoring
    performance improvement
    implementation of best practices (architecture, quality)

    Results:
    crash reduction
    fluidity improvement
    more maintainable codebase
  • Deezer
    Android Developer
    January 2023 - January 2024 (1 year)
    Paris, France
    Context:
    Streaming application with +5M users

    Interventions:
    Architecture evolution
    critical feature development
    team mentoring

    Results:
    stability improvement
    delivery acceleration
    user experience improvement

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Education

  • Bachelor of Science (B.S.)
    SUPINFO International University
    2014

Skill set

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