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Brian GianniniBG

Brian Giannini

Développeur mobile | Spécialisé Android & KMP

€590/day
Paris, FR
8-15 years

Average response time: 1 hour

About Brian

Software engineer with 10+ years of experience building mobile and web applications, integrating AI-driven features, and delivering IoT products.

A product-minded, expert in Kotlin, Jetpack Compose, and Kotlin Multiplatform, with a strong focus on architecture, performance, and user experience.

Known for autonomy, fast delivery, and remote collaboration.
  • French

    Native or bilingual

  • English

    Native or bilingual

  • Italian

    Conversational

  • Spanish

    Basic

  • Japanese

    Basic

Remote only
Primarily works remotely

Experience

  • Hager Group
    Senior Software Engineer
    INTERNET OF THINGS (IOT)
    September 2025 - Today (10 months)
    Paris 17, France
    • Took ownership of a smart doorbell app and an energy management app by adding highly requested features while reducing the technical debt, resulting on increasing users satisfaction
    • Managed internal Firebase testing and Play Store publishes to enable continuous deliveries
    Stack: Kotlin, Android 17, Jetpack Compose, Koin, Coil, Firebase
    Application Mobile Android Kotlin Jetpack Compose Android SDK
  • CRIAPHORE
    Tech Entrepreneur
    MEDICAL
    August 2024 - August 2025 (1 year)
    Paris, France
    Developed and launched Diagnosly, a health diagnosis app, as a solo entrepreneur, driving the entire product lifecycle from concept to execution
    • Engineered a cross-platform application using Kotlin Multiplatform (KMP) for both Android and iOS, sharing a single codebase and UI to enhance maintainability
    • Integrated LLMs using Retrieval-Augmented Generation (RAG) for AI-powered document analysis
    • Deployed a serverless backend on Google Cloud Platform to manage quotas and secure API endpoints
    Stack: Full Kotlin and Jetpack Compose (both Android & iOS), Android SDK 34 , Koin for DI, full Coroutine Flow, Room, SQLite, SQLCipher, Decompose for navigation, Ktor, JUnit, Espresso, Google MLKit, Firebase, LeakCanary, Datastore, Crashlytics, Google Analytics, GCP (Google Cloud Platform), Firebase Cloud Functions
    Artificial Intelligence (AI) Application Mobile Generative AI Kotlin Multiplatform Google cloud
  • LEDGER
    Senior Android Engineer
    TECH
    September 2022 - June 2024 (1 year and 9 months)
    Paris, France
    Gound-up development of a new secured crypto app with hardware integration

    • Architected the app with modern practices in Kotlin & Jetpack Compose to minimize technical debt
    • Collaborated with the hardware team to ensure seamless product integration in web 3 ecosystem
    • Partnered with the UX team to build a comprehensive Design System for UI component reusability
    • Established CI/CD pipelines and testing framework to guarantee application stability

    Stack: Android, Full Kotlin, Jetpack Compose and Coroutine Flow, Koin, Ktor, OkHttp, Retrofit, Coil, JUnit, MockK, Espresso, Room, GitHub Actions, Ansible
    Kotlin Jetpack Compose Clean Architecture Blockchain CI/CD

Recommendations

Timothée Rey-VibetTR
Florian GuyetFG
Timothée Rey-Vibet and 1 other person have recommended Brian

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Education

  • Engineering degree
    Polytech
    2015
    Engineering degree

Certifications

Skill set

Categories