About Sébastien
French
Native or bilingual
English
Fluent
Experience
- Orange BankTech Lead AndroidBANKING AND INSURANCEJune 2018 - Today (8 years)Montreuil, FranceComplete refactoring of the Orange Bank Android application - 1,000,000 users - Play Store Rating: 4.5 – voted best banking app in 2022 in France.Implementation of technical stack (jetpack compose, coroutines, flow, hilt, navigation, retrofit, room, unit tests, UI tests, etc.).Implementation of clean architecture with modularization (data/domain/mvvm).Offline cache strategies (room, datastore).Implementation of security layers (encryption, authentication, certificate pinning).Implementation of Material Design.Firebase integrations (push notifications, analytics, crashlytics, remote config).CI setup (jenkins, automatic tests, detekt, sonar, google play deployments + firebase app distribution).Led a team of 7 developers using agile / safe methodology.
- SNCF MobilitésAndroid ArchitectTRANSPORTATIONFebruary 2017 - May 2018 (1 year and 4 months)Paris, FranceDevelopment of the Android application for managing the dematerialized Navigo Pass.Development of the Android application for controlling train tickets used by SNCF agents.Implementation of clean architecture and modularization.Performance optimizations (offline with SQLite DB), security aspects, and NFC feature integration.CI setup (jenkins / sonar / automated tests on mobile farm with test reports).
- FDJTech Lead AndroidPRESS AND MEDIAJune 2013 - January 2017 (3 years and 8 months)Boulogne-Billancourt, FranceComplete overhaul of the Parions Sport Point of Sale Android application - High traffic application with 2,000,000 users - Play Store Rating: 4.5Multi-sport betting through a cart, sports betting consultation in offline mode with an embedded mobile database, synchronization strategies, ticket dematerialization for bets via QR-Code, ...Development of screens for mobile and tablets.Developments and improvements on the Loto and Euromillions applications (development of a new game "My Million", scanning of game receipts with results via the application, in-app access to the player account, ...).Led a team of 6 developers in an agile setup.
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