Freelancer profile translated to English.
Back to original languageAbout Joffrey
đ± Looking fora React Native developertostrengthen your teamor do you havea mobile application project?
React Native Developerâïž with over4 years of experience**, I evolved in agencies and then as a freelancer, working on various mobile projects, from **MVPto **applications in production**.
For me,being a good developeris not just about writing code. It's also aboutunderstanding business challenges, user needs**, anticipating **technical challenges**, and **collaborating effectively in a teamto propose solutions adapted to the objectives.
I am used to working in teams andadapting quicklyto existing contexts and projects. I enjoyexchangingwith other project profiles (product, design, tech) tomove forward**in the right direction**. I pay attention to code quality, readability, and durability,without seeking to overcomplicate**. When useful, I take a step back from technical choices **to proposesimple and effectivesolutions**, adapted **to the real needs of the project.
I can support you with the following:
đČ Development ofiOS & Android mobile applicationswith React Native.
𧩠**Architecture choices**.
đ ïžMaintenance, updates, and takeoverof your applications.
đ **Project migration**.
I amavailablefull-time or part-time.
If you want to know more, do not hesitate tocontactme đ
French
Native or bilingual
English
Fluent
Can work on-site
Marseille (up to 50km), Paris (up to 50km), Lyon (up to 50km)
Experience
- Projet PrivĂ©React Native DeveloperMEDICALSeptember 2025 - January 2026 (4 months)Marseille, FranceFreelance mission in developing a mobile application for dental professionals.The main objective was to simplify and digitize a specific business process.đ» Tech Stack:React Native (Expo), TypeScript, Zustand, TailwindCSSđ ïž Missions:
- Complete development of the mobile application from Figma mockups.
- Optimization of the user experience to offer a fluid and intuitive experience for professionals.
- API integration.
- Deployment on the App Store and Google Play Store.
- Comunica SASLead React Native Mobile DeveloperMEDICALAugust 2024 - June 2025 (10 months)Paris, FranceIn charge of the complete development of a medical appointment booking and management mobile application, launched from scratch and now in production.đ Context:Creation of a health platform allowing patients to book appointments in person or via teleconsultation, while accessing the national directory of practitioners (all of France + DOM-TOM), whether registered on platforms like Doctolib or Maiia or not.đ» Tech Stack:React Native (Expo), TypeScript, Zustand, TailwindCSSđ ïž Role & Missions:
- Design and development of the mobile application in collaboration with the product/design/backend/frontend teams
- Writing documentation
- Testing and production deployment
âïž Feature Examples:- Multi-criteria search engine: geolocation, map, area, specialty, reason for consultation
- Complete appointment booking process: time slots, instructions, confirmations, documents, reminders
- Advanced agenda management: modification, cancellation, push notifications
- Teleconsultation
â Results:Delivery of V1.0 in stable production within deadlines, already adopted by +1000 users. - CIB PRODFullstack React.js / React Native / Node.js DeveloperDIGITAL AND ITMay 2022 - July 2024 (2 years and 3 months)Aubagne, Franceđ Notable Projects:đ„ Development (from scratch) of a social network connecting influencers, photo models, and content creators with over 25,000 users.đ Context:Development of a mobile platform to list Talents (influencers, photo models, content creators), facilitating connections with companies for collaborations.đ» Tech Stack:React Native (Expo), Javascript, Redux Toolkit, Symfonyđ ïž Missions:
- Development of features such as in-app purchases (subscriptions), notifications, authentication, onboarding, user profile management.
- Collaboration with the back-end Symfony PHP team for feature development.
â Impact:Facilitating collaborations between Talents and companies, increasing partnership opportunities.--------------------------------------------------------đ„ Development (from scratch) of the official application for an association.đ Context:Development of a social network for an industrial zone association to inform users about news, events, and companies in the area.đ» Tech Stack:React Native, Expo, Typescript, React.js, Node.js, Express, MongoDBđ ïž Missions:- Development of a mobile application with features such as authentication, profile editing, geolocation, Google Maps integration, notifications.
- Back-end development as an API and creation of a back office for user and company administration.
â Impact:Facilitating communication and user engagement within the industrial zone.
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Education
- Application Developer DesignerRi72022Développement Web (Frontend / Backend) Développement Mobile Analyse et conception Administration systÚme UNIX / DevOps Gestion de projet logiciel Bases de données