👋 Hire Me - I'm Awesome!
🚀 Jérémy Magrin
Senior React Native Developer & CTO | 10+ Years of Experience
🌍 Based in Paris, France
📱 Mobile & Web Development Specialist
⭐ 5/5 Rating on Freelance Platforms | 80+ Successful Missions
💼 Professional Summary
With over 10 years of experience in software development, I specialize in building high-quality mobile and web applications using modern technologies. As a Senior React Native Developer and CTO, I've led technical teams, architected scalable solutions, and delivered exceptional results for clients ranging from startups to major corporations.
🎯 What I Offer
- Mobile Development: Expert in React Native since its 2015 release
- Web Development: Advanced React.js, Next.js, and modern web technologies
- Backend Development: Proficient in Nest.js, Node.js, and TypeScript
- Technical Leadership: CTO experience with team management and architecture design
- Performance Optimization: Specialized in app performance and scalability
- UI/UX Excellence: Passionate about accessibility and user experience
- Agile Methodology: TDD, CI/CD, and modern development practices
🛠️ Tech Stack
Frontend
Backend
Mobile Native
Tools & Platforms
🌟 Notable Projects
💼 Epsor - React Native Developer
August 2025 - Present
- Developing cutting-edge mobile features for employee savings platform
🤖 Mistral AI - React Native Developer
March 2025 - August 2025
- Enhanced "Le Chat" mobile application with multiple new features
- Contributed to one of Europe's leading AI companies
🎯 Twenty - Full Stack Developer (Nest.js & React.js)
June 2023 - March 2025
- Open-source CRM alternative to Salesforce
- Full-stack development with modern tech stack
- GitHub: twentyhq/twenty
📱 Snoop Media - CTO & Lead Developer
January 2022 - June 2023
- Chief Technology Officer role
- Architected and developed iOS & Android applications in React Native
- Built scalable backend infrastructure with Nest.js
🎰 Betclic Group - React Native Developer
July 2021 - December 2021
- Developed Betclic TV application
- High-performance streaming features
🍳 Cookomix - React Native Developer
January 2019 - December 2020
- Recipe application with 100,000+ monthly active users
- Led project management and team development
- Delivered performant and scalable mobile applications
📊 Key Achievements
✅ 5/5 Rating across all freelance platforms
✅ 80+ Successfully Completed Missions
✅ 10+ Years of Professional Experience
✅ React Native Expert since 2015 (early adopter)
✅ CTO Experience with team leadership
✅ 100,000+ Users reached through developed applications
✅ Open Source Contributor (Twenty CRM and more)
🎓 Education
EPITECH - European Institute of Technology
Master's in Computer Engineering (2011-2016)
California State University San Marcos
Computer Science Exchange Program (2014-2015)
🌐 Languages
- 🇫🇷 French: Native
- 🇬🇧 English: Full Professional Proficiency
💡 Why Hire Me?
✨ Proven Expertise
- 10+ years of hands-on development experience
- Mastery of React Native since its inception in 2015
- Full-stack capabilities from mobile to backend
🚀 Delivery Excellence
- 5/5 rating maintained across 80+ missions
- Fast response time: < 1 hour
- Client-focused approach with efficient MVP delivery
🔧 Technical Versatility
- Mobile (React Native, Swift, Kotlin)
- Web (React, Next.js, TypeScript)
- Backend (Nest.js, Node.js, Firebase)
- Architecture & Performance Optimization
👥 Leadership & Mentorship
- CTO experience with team management
- Training and mentoring developers
- Strong communication via Slack, Discord, WhatsApp, Email
📈 Results-Driven
- Apps with 100,000+ active users
- Enterprise-level projects (Mistral AI, Betclic, Epsor)
- Open-source contributions to major projects
📞 Let's Connect!
I'm always open to discussing new opportunities, exciting projects, and collaborations.
Ready to bring your vision to life?
📈 About This Repository
The goal of this repository is simple: maintaining a GitHub contribution heatmap that is fully green 😅
As you know, recruiters sometimes look at GitHub activity, but when you work as a freelancer on other platforms like GitLab, or contribute to private repositories, your public GitHub profile doesn't always reflect your actual work. That's why I created this repository—to showcase my skills, share my professional profile in an accessible format, and maintain consistent GitHub activity through automated daily commits via CI/CD.
Feel free to fork this if you're a freelancer facing the same challenge! Have fun 😉
🟩 GitHub Contributions
🎯 Available for Freelance & Full-Time Opportunities
Let's build something amazing together!