Freelancer profile translated to English.
Back to original languageAbout Quentin
I am a Mobile Tech Lead specializing in the design and development of modern mobile and web applications with React Native, Expo, and Next.js. I work with startups and companies that need to launch a mobile product from scratch or stabilize an existing app.
What I bring additionally → product & design. I am comfortable with Figma and product definition, count on me if needed.
I also have experience working internationally, in both French and English.
French
Native or bilingual
English
Native or bilingual
Korean
Conversational
Can work on-site
Paris (up to 50km), Toulouse (up to 10km), Aix-en-Provence (up to 50km)
Experience
- BistromoCo-founder - Frontend Lead & Design ArchitectRESTAURANTS AND FOOD SERVICEJanuary 2025 - Today (1 year and 7 months)Paris, FranceContextCreation from scratch of a mobile & web POS application (point of sale for restaurants). Checkout, kitchen display, and mobile ordering, all in one tool. The client's objective is to replace an obsolete system that no longer meets their needs in the kitchen and dining room.Team2 co-founders + 1 designer who joined the project along the way.My RoleDefine the frontend architecture (Expo, Next.js) and coding standards.Design the entire product UI/UX on Figma (design system, mockups, prototypes).Develop and deliver the mobile & web MVP, then iterate based on user feedback.Lead technical product decisions in direct collaboration with the co-founder.ToolsExpo, React Native, Next.js, Figma.+ Amplitude (analytics), RevenueCat, Stripe (payments)ResultsMVP delivered and deployed in production in early 2026.Product validated by early users, continuous iterations.
- CochlMobile Tech LeadINTERNET OF THINGS (IOT)May 2022 - December 2025 (3 years and 7 months)South Korea Seoul Yongsan SeoulContextTechnical management of mobile applications for a startup specializing in AI sound analysis, covering B2B and B2C products.TeamMobile team + backend collaboration + PM.My RoleLead the design, development, and maintenance of several mobile apps (Expo/React Native).Coordinate with backend, design, and PM teams to align roadmaps.Manage backend supervision on topics related to mobile features + direct supervision of backend freelancers on specific projects.Ensure releases and production quality.ToolsExpo, React Native, AI / data analysis, Mobile CI/CD.Results4 applications delivered and maintained in production.Mobile apps used as field demo tools at international trade shows → extended product reach.Internal dashboards and tools ported to mobile → accessibility beyond web-only, new use cases in mobility.
- InsiteoMobile EngineerINTERNET OF THINGS (IOT)September 2020 - March 2022 (1 year and 6 months)Toulouse, FranceContextDevelopment and maintenance of indoor geolocation SDKs (Bluetooth Low Energy) for iOS, Android, and Unity platforms.TeamMobile/SDK team · collaboration with hardware teams and client integration.My RoleResearch and integration of native iOS (Swift/Obj-C) and Android (Java/Kotlin) SDKs into the Unity app.Integrate the shared C++ layer between platforms.Manage release cycles, multi-device BLE compatibility, and official documentation.ToolsiOS (Swift/Obj-C), Android (Java/Kotlin), C++, Unity, Bluetooth Low Energy.ResultsMulti-platform SDKs delivered and integrated.BLE compatibility reliably ensured across a wide range of devices.
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Education
- 1-year University Exchange - Chung-Ang University, SeoulChung-Ang University2020Échange universitaire d'un an sur le campus de Chung-Ang à Séoul, Corée du Sud
- Expert in Information TechnologyEPITECH2021Expert en Technologies de l'Information