Freelancer profile translated to English.
Back to original languageAbout Jerome
Senior Mobile Developer | React Native ⏐ React JS
I am a senior mobile developer specializing inReact Nativeand I help companies create, evolve, and optimize performant, stable mobile applications for iOS and Android, designed for real user needs.
My expertise is based onReact Nativeapplied to mobile development, with advanced mastery of performance architecture and maintenance of applications in production.
I develop robust, scalable applications capable of handling high loads, while ensuring a fluid user experience.
I also work on web interfaces in **React JS**, particularly for back-offices, dashboards, e-commerce, internal tools, and web applications connected to mobile apps...
📱 React Native
Mobile Applications
- Development of iOS and Android mobile applications in React Native
- Scalable mobile application architecture
- Performance and stability optimization
- Integration of APIs and third-party services
- Management of stores, builds, and production releases
- Maintenance and evolution of existing applications
💻 React JS
Web Interfaces
- Development of web applications in React JS
- Creation of dashboards, back-offices, and business tools
- Web ↔ Mobile connection
- Clear and maintainable front-end structuring
🎨 UI / UX & Product
I pay particular attention to the user experience on mobile.
I design or collaborate on interfaces focused on performance, clarity, and real-world usage.
Tools: Figma and Canva
🤝 My Added Value
- Senior expertise in mobile app React Native
- Product vision and understanding of business challenges
- Clean, structured, and maintainable code
- Ability to act as a Lead Mobile Developer or referent developer
📩 Available for missions in React Native (mobile applications) and React JS, for creation, redesign, or long-term support.
French
Native or bilingual
English
Fluent
Can work on-site
Paris (up to 50km), Lyon (up to 50km), Lille (up to 50km), Bordeaux (up to 50km), Marseille (up to 50km)
Experience
- CYLLENELead Front-end Developer - Web & Mobile (React)DIGITAL AND ITJanuary 2023 - January 2026 (3 years)Paris, France
📱 Development of mobile applications in React Native for Android and iOS.
→ Creation of amobile CRMon Android integrating incoming call detection, with connection to an API for identifying unknown numbers, development of native modules in Kotlin,Synchronization of phone contacts, programming and sending emails.→ Design of aDigital Supportapplication in React Native, intended for technicians and clients:ticketing toolfor project tracking, including dashboards by project andby technician, as well as detailed statistics on ticket management and processing.💻 Web Development - React.js / Next.js
→Nigloland| React.js / Next.js: Complete back-office development from scratch: management of hotels, calendar, attractions, user roles, analytical dashboards→Buffalo Grill| React.js / Next.js / GitLab CI/CDRepair and optimization of the CI/CD pipeline, migration to a newer version of Next.js, development of the "Our Restaurants" page on buffalo-grill.fr→ Internal Projects | React.js |Team of 3 developers5 business applications developed and maintained: HRIS, ITSM, CMDB, Digital Support, CRM⚛️ Lead Developer Missions
- Definition of technical architectures and best practices- Skill development and support for team developers- Collaboration with product and design teams to ensure optimized interfaces and a fluid user experience- Project management: planning, estimation, task creation, code review, sprint setup🛠️ DevOps Missions (GitLab)
- Automation of website deployments to test and production servers- Setup and management of CI/CD pipelines under GitLab, Fastlane...- Optimization of the development workflow to ensure fast and reliable delivery. - WEBEDIALead Developer Mobile ApplicationsPRESS AND MEDIAJanuary 2020 - January 2023 (3 years)Levallois-Perret, France
Head of the mobile application department at Webedia Creators
Creation, development & management of mobile applications on the stores for Webedia.#SampleoConsumer application allowing users to participate in testing campaigns and receive free products.
📲 App Store | Play Store +100k downloads | ⭐ 4.8
End-to-end development from scratch in React NativeFull management: design, development, deploymentStack: React Native, Redux, Firebase, Stripe, Push Notifications, Universal Links, internationalizationiOS & Android publication and maintenance#myCreatorsApplication for influencers to participate in brand campaigns and carry out product placements📲 App Store | Play Store +10k downloads | ⭐ 4.6End-to-end development from scratch in React NativeStack: React Native, Redux, Firebase, Push Notifications, Universal Links, internationalizationiOS & Android publication and maintenance - bFAN SportsMobile Application DeveloperSPORTSJanuary 2017 - January 2019 (2 years)Boulogne-Billancourt, FranceIntegration of React Native into applications already published on the stores (iOS & Android):• Integration of React Native into existing production mobile applications (Play Store, App Store)• Development of 2 new views in React Native with bridges and native modules (Swift,• Creation of an interactive map in JavaScript for the 2019 Grand Prix du Castellet in production, available on the Play Store and App Store• Improvement and automation of the iOS application creation process (Ruby
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Education
- Software Architect (Master's degree)Epitech2019Architecte logiciel (Bac+5)
- Bachelor (Bachelor's degree)EPSI2017Bachelor (Bac+3)
Certifications
- React Native / ReactJSReact Native / ReactJS2015