Freelancer profile translated to English.
Back to original languageAbout Gérémy
Why me?
Simply because I love what I do! 🤝
What I do
• Adding and fixing features
• MVP 4-8 weeks → V1 iOS/Android ready for testing (auth, payments, push).
• Emergencies & stabilization → Crashes/builds fixed, libs migrated, before/after report.
• React Native takeover / migration → Quick audit + action plan + refactoring of key modules.
• Perf & app size → Profiling → improved and measured fps/battery/weight.
• CI/CD & Stores → EAS/Fastlane, signatures, automated TestFlight/Play.
My approach
Quick adaptation to Agile/Scrum environments and various stacks.
I prioritize code quality, meeting deadlines, and performance optimization to ensure robust and scalable applications.
My key expertise
🔐 Solid authentication : OAuth2, Passkey, 2FA, Passwordless
⚡ Optimization : performance, battery, app size
📡 Real-time features : WebSocket, push notifications
🚀 CI/CD & automated deployment : AppStore / PlayStore, automated servers
🔧 Migration & audit : transition to React Native, MVP from scratch
🛠️ Refactoring : securing and making existing code reliable
My strengths
✅ Solidback-end expertise
✅ Available quickly,autonomous, resilient under pressure
✅ Good technical and businesscommunication
✅ I provideconcretesolutions and integrate easily into teams
Contact
Need a reliable and efficientReact Native & backenddeveloper?
Contact me to discuss your needs.
French
Native or bilingual
English
Basic
Remote only
Primarily works remotely
Experience
- Oxy FooGeneral ManagerSOFTWARE PUBLISHINGDecember 2021 - Today (4 years and 8 months)Québec, CanadaAt OxyFoo, I led the development of mobile and back-end applications from scratch to production.I defined the architecture (React Native / JavaScript client-side, Node.js / TypeScript / SQL server-side) and implemented a design system and a mono-repo to accelerate development.Implemented CI/CD GitHub Actions, unit & E2E tests.Performance optimizations: 99% startup time.Integration of OAuth 2, real-time push notifications via WebSocket, privacy-by-design analytics (GDPR).On the organizational side, I coached Scrum teams, wrote guidelines, and conducted PR reviews to ensure quality and scalability. Result: reliable weekly deliveries, 5/5 customer satisfaction, and scalable applications.
- FreelanceMobile & Backend Developer - Personal SaaS / Mobile App ProjectCONSULTING AND AUDITSSeptember 2020 - Today (5 years and 11 months)Mobile & Backend Developer
- End-to-end design and development of a mobile application
- REST API Backend, authentication, database, business logic
- Deployment, testing, bug fixing, and performance improvement
- Stack: Flutter / React Native / Swift / Kotlin, Node.js / Laravel / Django, PostgreSQL / Firebase depending on your needs
Reviews
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Education
- BaccalaureateLycée Céret2018