Freelancer profile translated to English.

Description

Hello, I am Rami Trabelsi.An Android developer for over 10 years (and a proud survivor of the Android Jelly Bean, Kitkat, and Lollipop era 🍭), I have specialized inKotlinfor the past 6 years. I enjoy pushing boundaries, whether by integratingJetpack Composefrom its first beta or by developing adesign systemfrom scratch that revolutionized the visual consistency of our apps. My goal? To create applications that are as fluid as they are effective, with a touch of elegance. I firmly believe that the best technology is born from collaboration, and I love transforming every idea into a concrete and intuitive reality for users.

Languages

French
Native or bilingual
English
Native or bilingual

Workplace preferences

Remote only

Primarily works remotely

Vestiaire Collective
Senior Android Engineer
E-COMMERCE
July 2019 - November 2024 (5 years and 4 months)
Paris, France
Vestiaire Collectiveis an e-commerce platform specializing in second-hand luxury fashion. For 5 years, I contributed to the evolution of the Android application, accompanying the company from startup to unicorn 🦄, a member of the French Tech top 40.

Main Responsibilities:

*Lead Dev on Design System:Design and implementation of a Design System, standardizing the UI and accelerating the development of new features.

*Jetpack Compose Adoption:Leading the adoption of Jetpack Compose for creating modern interfaces.

*Migration to Kotlin:Strategic transition of the codebase from Java to Kotlin, reducing the Java portion from 30% to 10%, with an approach focused on code quality and enhanced unit test coverage.

*Architecture & Clean Code:Implementation and continuous improvement of Clean Architecture based on MVVM, with a clear separation of responsibilities across different layers: UI (View or Jetpack Compose) -> ViewModel -> UseCase -> Repository -> Data Source, using DTO (Data Transfer Objects) to structure data effectively and securely. I also strengthened unit test coverage on these critical layers, thus ensuring better maintainability and increased scalability for future developments.

*Feature Optimization & A/B Testing:Redesign and optimization of strategic screens validated by A/B tests, demonstrating significant improvement in user engagement.

*Development & Documentation:Development of new features compliant with Modern Android Development (MAD) guidelines, with rigorous technical documentation through detailed RFCs.

*Release Management & CI/CD:Optimization of the CI/CD pipeline, facilitatingweekly releaseswith an extremely low crash rate (99.95% crash-free).
- COYOTE -
Android Engineer
October 2018 - July 2019 (9 months)
Paris, France
Coyoteoffers driving assistant applications for smartphones and embedded devices. I joined a team of 10 Android engineers in an agile/scrum environment, where I contributed to two key projects.

Main Responsibilities:

Lead developer for the "Try & Buy" feature: Creation of three new screens, ensuring a fluid user experience and adherence to deadlines.
Optimization for Coyote UP: Contribution to the specific development of the application for the Coyote UP device, optimizing the code for the device's reduced hardware capabilities.
Compatibility with older devices: Ensuring the application's compatibility and performance on older devices.
Version management & testing: Following best practices for version management with Git and strengthening code quality with unit tests.

Technical Environment:

Java, Kotlin, MVVM, C++, NDK, Git Rebase, Unit Tests, Lottie, Jenkins, Room, Dagger (DI), RxJava, DataBinding, SemVox SDK, Gradle flavors, MirrorLink
Wynd
Android Engineer
May 2018 - September 2018 (4 months)
Paris, France
ChapsVision for Unified Commerce (formerly Wynd) offers B2B solutions connecting physical stores to digital platforms for a seamless omnichannel experience. I joined a team of 11 Android engineers in an agile/scrum environment, where I contributed to the development of critical applications for mobile point-of-sale (POS) management, click & collect, and inventory management.

Main Responsibilities:
Android Application Development: Participation in the development of solutions for mobile point-of-sale management, click & collect, and inventory management.
Architecture Optimization: Implementation of the MVP model and Repository Pattern to ensure application maintainability and performance.
Collaboration in Feature Teams: Close collaboration with other engineers and product teams to meet specific client needs.
Technical Environment:

Java, Kotlin, MVP Architecture, Repository Pattern, RxJava, Room, Retrofit, DataBinding, ConstraintLayout, SonarQube