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Sai SebastianSS

Sai Sebastian

Mobile App Developer | Flutter & Android | Kotlin

125 €/jour
Paris, FR
3-7 ans

Délai de réponse moyen : 1h

À propos de Sai

Mobile developer with solid experience building Android and Flutter applications used in production environments. I specialize in creating scalable, clean, and high-performance mobile apps, with a strong focus on code quality, architecture, and user experience.
I have worked on projects such as LMS platforms, booking systems, CRM apps, and content-driven applications, handling the full lifecycle from feature development to store releases (Play Store, internal testing, TestFlight).

Key skills

Flutter (Dart) & Android (Kotlin, Java)

Clean Architecture, MVVM

REST & GraphQL APIs

Firebase (Auth, Push, Crashlytics, Analytics)

Jetpack Compose, Coroutines, Flow

CI/CD, Git, Agile/Scrum

Performance optimization & bug fixing

Currently based in France, open to freelance missions (on-site or remote). I value clear communication, reliability, and delivering features that bring real business value.
  • Anglais

    Bilingue ou natif

  • Français

    Capacité professionnelle limitée

En télétravail uniquement
Travaille majoritairement à distance

Expériences

  • Hopcast
    iOS App Developer
    juin 2025 - novembre 2025 (5 mois)
    Paris, France
    • • Designed and implemented an innovative iOS application utilizing Hopcast SDK for device-to-device content distribution.
    • • Collaborated closely with system architects and developers to understand and leverage Hopcast's orchestration technology.
    • • Focused on efficient sharing of video, audio, and images, ensuring energy efficient content distribution.
    iOS Swift Bluetooth Low Energy Docker Websocket
  • TechwareLab
    Flutter Developer
    avril 2021 - août 2023 (2 ans et 4 mois)
    Kochi, Kerala, India
    • Built scalable Flutter/Kotlin apps (LMS, booking, CRM) with
    REST/GraphQL APIs and Firebase (auth, push, Crashlytics). Improved responsive UI and performance using clean architecture,
    while collaborating via Git/GitLab, Scrum and CI/CD.
  • WebMobi Network Solutions Pvt Ltd
    Android Developer
    janvier 2019 - mars 2021 (2 ans et 2 mois)
    Kochi, Kerala, India
    Develop and test Mobile and TV Android application including UI, core function, and third-party SDKS.Develop project concepts and maintain optimal workflow.Deployed beta version of IPTV and Live Streaming mobile and TV app,which helped to identify bugs, user experience issues, and functionality problems.

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Formations

  • Master in Science and technology Software
    ESIGELEC : ÉCOLE D'INGÉNIEURS-ES GÉNÉRALISTES
    2023
    Master in Science and technology Software
  • BCA
    Mahatma Gandhi University
    2016
    BCA

Compétences

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