Freelancer profile translated to English.
Back to original languageAbout Tawfiq
Android Expert (Kotlin/Jetpack)
With over9 years of experience👨‍💻, I support companies in thedesignanddevelopment of mobile applications📱 that are robust, scalable, and tailored to their business needs.
I have successfully completed several projects formajor clients, startups🚀, andpublic institutions🏛️.
🔧What I do for my clients
- Development ofperformant**, **secure**, and **intuitive**Android** applications
- **Integration**: REST API, Firebase, geolocation, push notifications
- User experience:UI/UX, fluid animations
- Maintenance: architecture (Clean Architecture, MVVM),automated tests (Junit)
đź“‹Work methodology
- **Agile Method (Scrum)**: sprints, user stories, demos, and retrospectives
- Regular follow-up, **clear deliverables**, and support until release on the Play Store
- **Clean, documented code**, ready for long-term evolution
🏆Key Experiences
- **SNCF**: Internal Android application for managing and tracking railway equipment
- **Meero**: Android development of a mobile SDK for professional photographers
- **CCAS**: Android & iOS development of applications for booking stays
- **Magneta**: Android development of a mobile SDK for PTI-DATI alert devices (lone workers)
🤔Why trust me
- Recognized expertise in Android (Kotlin, Jetpack Compose, MVVM, Hilt, Retrofit, Room)
- Ability toquickly understand business needsand propose suitable solutions
- Excellent client feedback oncode quality, communication, and reliability
🚀 Do you have an Android project to realize?
👉Let's discuss it now :-)
➜ 📆 Book a meeting: cal.com/tawfiq-call/
French
Native or bilingual
Tamil
Native or bilingual
English
Conversational
Can work on-site
Paris (up to 40km), Montigny-lès-Cormeilles (up to 40km), Argenteuil (up to 40km)
Experience
- CCAS - Activités sociales de l'énergieSenior Android / iOS DeveloperPUBLIC SECTORJuly 2022 - Today (3 years and 11 months)Montreuil, FranceAchievements & Contributions
- Development of Android applications (Kotlin + Jetpack Compose + KMP) and iOS (Swift, UIKit)
- Implementation of Clean Architecture (MVVM) with Coroutines / Flow
- Implementation of authentication management (SSO, Hawk)
- Geolocation, QR Code, and REST API integration (Retrofit / OkHttp / Moshi)
- Implementation of CI/CD (Jenkins) and crash reporting (Firebase Crashlytics)
- Writing unit tests (JUnit / Mockito)
- Play Store and App Store deployment
- Implementation of booking systems (accommodation, restaurants, vehicles)
- Management of network calls, retries, timeouts, standardized HTTP errors
Added Value- Notable improvement in application stability and reduction in crashes
- Creation of a solid technical foundation facilitating scaling
- Rapid addition of new iOS and Android modules
- Addition of modern features enhancing user experience
- Contribution to the transition towards a modular architecture
- Scalable, paving the way for future connected services
- MeeroAndroid Kotlin DeveloperSOFTWARE PUBLISHINGOctober 2021 - July 2022 (9 months)92300 Levallois-Perret, FranceAchievements & Contributions
- Design and development of an SDK application in Kotlin
- Communication with REST APIs (listing shoots, photo metadata)
- Automatic upload to a cloud (AWS S3)
- Implementation of unit tests (JUnit)
- Use of CameraX to capture high-resolution photos
- Integration of features: autofocus, white balance, flash,
- Compilation and export of the SDK as .aar
Added Value- Project managed from start to finish, providing Meero with a modular and easy-to-integrate Android SDK
- Improvement in upload performance and reduction in transfer errors
- Acceleration of the SDK integration process into client applications, halving production time
- SNCFAndroid DeveloperTRANSPORTATIONMarch 2021 - October 2021 (7 months)Seine-Saint-Denis, FranceAchievements & Contributions
- Development of a mobile application in Java & Kotlin
- Connection to REST APIs developed in Java via Retrofit & OkHttp
- Integration of JavaScript modules developed with Convertigo Mobility Platform
- Test coverage measurement, reporting, and alerts (SonarQube, JaCoCo).
- Generating APKs via Jenkins and linking them to Nexus
Added Value:- Successful technical migration to Kotlin, ensuring a more modern and robust application
- Improvement in code quality and deliverable reliability
- Significant reduction in production bugs
- Smoother CI/CD pipeline
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Education
- Master's in Engineering, Information Systems ManagerCESI Engineering School2019Master en ingénierie, Manager en systèmes d'information
- BTS in Computer Services for Organizations (SIO), Software Solutions and Business Applications (SLAM)Lycée de l'Hautil2016BTS Service Informatique aux Organisation (SIO), Solutions Logicielles et Applications Métiers (SLAM)
Certifications
- Android & Kotlin Training CertificateUdemy2021