Freelancer profile translated to English.
Back to original languageAbout Dany
Looking for a freelancer who can quickly launch a reliable **mobile application**, take over an existing app, or improve its quality, performance, and maintainability?
I am a seniorFlutter developer**, specializing in the creation, redesign, and optimization of **iOSandAndroid**applications**. I support startups, SMEs, and large corporations throughout the entiremobile applifecycle: technical scoping, architecture,Flutter/ **Dart development**, API integration, quality, testing, store publication, and continuous improvement.
I can assist with:
- an MVP to launch quickly
- an existingapplicationto evolve
- a technical or product redesign
- anappto stabilize before scaling
- a need for reinforcement in an existing mobile team
I place a strong emphasis on code quality, architectural clarity, user-perceived performance, and fluid collaboration with product, design, and backend teams.
I have worked in demanding environments, notably at Renault Digital, SNCF Connect, and Taster, with concrete challenges related to reliability, user experience, industrialization, and deployment.
Key skills:Flutter**, **Dart**, **mobile architecture**, API integration, software quality, testing, performance, application maintenance, **App Store/Google Playpublication, product-tech collaboration.
If you are looking for an autonomous, rigorous, and results-orientedFlutterprofile, I can help you design or grow yourmobile applicationunder optimal conditions.
French
Native or bilingual
English
Fluent
Can work on-site
Paris (up to 50km), Lyon (up to 50km), Montpellier (up to 50km), Lille (up to 50km), Toulouse (up to 50km)
Experience
- Abondo incFlutter DeveloperSOFTWARE PUBLISHINGMarch 2026 - April 2026 (1 month)Paris, FranceMaintenance, optimization, and evolution - AbondoTechnical intervention on a Flutter mobile application to improve overall stability, optimize performance, and evolve key features.Intervention ContextThe application was experiencing slowdowns, inconsistent behavior in certain user flows, and areas for improvement in data management and user experience. The goal was to strengthen the application's reliability while preparing it for increased load.Tasks Performed
- Optimization and Stabilization
- Optimization of overall Flutter application performance
- Bug fixes impacting navigation and certain user flows
- Improvement of state management to prevent display inconsistencies
- Refactoring of code sections to enhance maintainability
Functional Improvement- Adjustment and enhancement of several screens for a better user experience
- Optimization of interactions and loading times
- Implementation of UX improvements to streamline key user journeys
Backend and Data- Optimization of interactions with Firebase
- Improvement of data management and consistency
- Securing of certain authentication and data retrieval flows
Testing and DeliveryComprehensive testing of critical user journeysValidation of fixes and optimizationsDeployment of a stable version ready for productionSupportClose collaboration with the client, regular communication, and rapid adaptation to functional and technical needs.ResultSmoother and more stable application, improved performance, optimized user experience, and a strengthened technical foundation for future developments.Technologies UsedFlutterFirebase (Firestore) - Renault DigitalFlutter Mobile DeveloperAUTOMOBILESeptember 2022 - Today (3 years and 9 months)Paris, FranceAt Renault Digital, I contributed to a project related to the group's mobility ecosystem and connected services, within a structured and demanding product environment.I participated in the development and evolution of mobile features inFlutterand **Dart**, with a focus on the quality of execution, application reliability, and code maintainability. My work was part of a long-term product vision, with high standards for collaboration, industrialization, and user experience.This assignment involved addressing concrete challenges in cross-platform **mobile development**, functional integration, and application robustness, within a team working on strategic subjects for the Renault group.Skills utilized:**Flutter**, **Dart**, **mobile development**, application architecture, software quality, maintainability, user experience, product-tech team collaboration.
- TasterFlutter Mobile DeveloperRESTAURANTS AND FOOD SERVICEMay 2022 - August 2022 (3 months)Paris, FranceAt Taster, I contributed to the development of a businessmobile applicationfor operational teams, in a context where responsiveness, ease of use, and reliability were essential for the smooth running of the business.The application centralized real-time operational workflows and needed to enable simple, fast, and robust execution in the field. I contributed toFlutter/Dartdevelopment, feature evolution, and continuous improvement of the user experience, taking into account business usage constraints and daily performance needs.This experience allowed me to work on a concrete product with significant operational stakes, with a real need for efficiency, functional clarity, and application stability.Skills utilized:**Flutter**, **Dart**, business application, real-time, user experience, **mobile performance**, functional evolution, application quality.
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Education
- Architecture & Performance for Flutter Mobile DeveloperTraining Organization: Mobile Developer2022Formation avancée Développeur Mobile Flutter Conception d’architectures scalables (Clean Architecture, MVVM), bonnes pratiques, gestion de projet mobile, CI/CD, tests unitaires & tests widget sous Flutter. Optimisation UX/UI et publication sur Google Play Store et Apple App Store.
- Flutter Mobile DeveloperTraining Organization: Mobile Developer2020Formation Développeur Mobile – Spécialisation Flutter Approfondissement du développement d’applications mobiles cross-platform avec Flutter et Dart