Freelancer profile translated to English.
Back to original languageAbout Célia
Mobile developer with 4 years of experience (including 2 as an apprentice).
Initially specializing in native Android (Java / Kotlin), I turned to cross-platform iOS and Android development with Flutter this year.
My various experiences have allowed me to test different development methodologies, and I am committed to applying best practices to create applications that meet the different needs of each project.
Preferred practices and tools:
Gitflow
Firebase Authentication
Firebase Crashlytics
Flutter:
Architecture: MVVM
State Management: GetX / Provider
Asynchronous: Async / Await
API: HTTP
Cloud Database: Firebase Firestore
Local Persistence: Shared Preferences
Kotlin:
Architecture: MVVM / Clean Architecture
State Management: LiveData / State
Asynchronous: Coroutines
Stability: Firebase Crashlytics
API: Retrofit
Cloud Database: Firebase Firestore
Local Persistence: ROOM / Shared Preferences
UI: XML / Jetpack compose
Unit Tests: Mockito / Mockk
Looking forward to putting these skills and potentially new ones to use in an exciting project!
French
Native or bilingual
English
Fluent
Spanish
Conversational
Japanese
Basic
Can work on-site
Paris (up to 50km)
Experience
- PI ELECTRONIQUEAndroid Mobile DeveloperBANKING AND INSURANCEJanuary 2026 - March 2026 (2 months)Paris, France
- Development of an Android POS application following a multi-module MVVM / Clean Architecture
- Implementation of a clear separation of UI, Domain, and Data layers to facilitate maintenance
- Design and implementation of a shared design system module to centralize the management of themes, typographies, colors, and reusable UI components
- AnybuddyFlutter Mobile DeveloperSOFTWARE PUBLISHINGDecember 2024 - July 2025 (7 months)Paris, FranceThe Anybuddy application allows racket sports enthusiasts to instantly book a court near them without a license (Tennis, Padel, Badminton, Table Tennis...).Mobile Development & Architecture
- Development and maintenance of the Anybuddy mobile application (Flutter,Dart, MVVM)
- Deployment oftestandproductionversions on theGoogle PlayandApp Storestores
- Data state management viaProviderandGetX
- Local data persistence management (Shared preferences)
- Complete graphical rework of the application to modernize and optimize the UI
Integrations and Features- Integration of secure payment with theStripe SDK
- Implementation of authentication withFirebase Auth
- Management of API requests via theHTTPlibrary
- Implementation ofPostHog(Analytics) for tracking performance metrics and user journeys
- Development of geolocation-related features
Quality assurance and documentation- Error and crash monitoring (Firebase Crashlytics) to ensure production stability
- Writing and updating technical documentation
- Design of diagrams to represent different workflows (activity diagrams)
- SMILE AND PAYAndroid Mobile DeveloperSOFTWARE PUBLISHINGNovember 2022 - March 2024 (1 year and 4 months)Paris, FranceSmile & Pay is a French company that offers simple, no-commitment card payment solutions for small businesses and independent merchants.Roles held:Maintenance and evolution of the Smile and Pay mobile application (Kotlin, JetpackCompose, Room, Firestore)Securing sensitive dataDesign of responsive interfaces for mobiles and tabletsWriting and updating technical documentationDevelopment of unit and instrumented testsUse of Gitflow for optimized Git repository management
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Education
- Android Mobile Application DeveloperOpenClassrooms2022Certification RNCP de niveau II (Bac + 3/4) Appréhender un cahier des charges et choisir une solution technique Concevoir l’architecture technique d’une application Créer des applications Android Interagir avec une base de données Mettre en œuvre des tests unitaires, des tests d’intégration et des tests d’interface Élaborer une documentation technique et fonctionnelle de l’application