Freelancer profile translated to English.
Back to original languageAbout Nicolas
Senior Mobile Developer (React Native, iOS, Android) 🚀
Looking for a product-oriented mobile developer to design a performant and scalable app?
I design and develop custom mobile applications (iOS / Android),from prototype to launch, with a business focus,impeccable code quality, and a solid user experience.
My profile at a glance
👨💻+10 years of software development experience
📱Mobile Specialization:React Native, Expo, native integrations (Kotlin, Swift)
🚀 I have developed apps usedby +1 million users
💰 Some generate+€40M/year in revenue
🏢 My clients: major corporations (Total, CNES), scale-ups, influencers (TrainSweatEat)
🎯I handle projects from idea to store (or existing projects)
What I offer
✅ Performant and scalable mobile applications
✅ UX/UI design optimized for conversion and retention
✅ Fast execution, with or without an existing technical team
✅ Strategic consulting + product support
✅ Technical rigor: TDD, Clean Architecture, CI/CD
My technical expertise
🧠 Mobile Stack:
React Native (Expo, CLI) · Kotlin · Swift · Firebase · Push / In-App Purchase · App Store & Play Store
🧱 Backend & Services:
Node.js · NestJS · GraphQL · PostgreSQL · MongoDB · AWS · Docker
⚙️ Methodologies:
Clean Architecture · TDD · Atomic Design · CI/CD · Pair Programming · Code Review
Roles I can fill
🧭 CTO /Mobile Lead
🛠️Senior Mobile Developer (React Native)
🧩 Product / Tech Advisor
🧑🔧 Debugging / Refactoring / Continuous Improvement
My strengths
✨ Product & Business Vision
🛠️ Fullstack Technical Expertise
🧠 Startup Mindset
🤝 Professionalism: respects deadlines / documents / communicates
📅Ready to launch or evolve your mobile app?
Write to me and let's schedule an initial chat (quick response guaranteed).
French
Native or bilingual
English
Fluent
Remote only
Primarily works remotely
Experience
- BIZCOMobile Lead DeveloperJune 2025 - Today (1 year)Overhaul of the Bizco application and addition of features:- AI Chat- Property search with renovation needs- UX/UI improvementsStack:- React-native- Firebase- Expo
- RedactAICTO & Lead DeveloperNovember 2023 - Today (2 years and 7 months)•Number of users: 20,000+•Description: An AI solution that automatically generates ultra-personalized LinkedIn posts based on your profile, to maximize visibility and engagement.•Contributions:•Recruited and managed a team of 2 full-stack engineers•Designed and developed the application from scratch•Involved in all key aspects of the project: technical direction, product management, client relations, support, and pre-sales•Technical stack (main tools): OpenAI, AWS Bedrock, TypeScript, React, Node.js / Express, NestJS, PostgreSQL, Jest, Docker…
- SupermondayCTO & Lead DeveloperHUMAN RESOURCESOctober 2021 - November 2023 (2 years)Paris, FranceDevelopment of the Supermonday application from scratch.B2B application for CAC40 clients.Development:- Design and development of complex algorithms (in-house heuristics using graph theory)- Front-end development- Back-end development- Analytics- DevOps & InfrastructureProduct:- Product discovery- Roadmap- Wireframes / Mockups- Scrum masterManagement:- Recruitment of the development team (3 developers)- Development techniques and processes (CI/CD, Code Reviews, pair programming, Testing, Clean architecture, ...)- Training of developers and apprenticesCTO:- Technology choices- Continuous improvement- Creation of an independent development team- Pre-sales- GDPR & Cyber compliance- Client relations
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Education
- National School of Computer Science and Applied Mathematics of GrenobleENSIMAG2019