Freelancer profile translated to English.
Back to original languageAbout Darian
Hello,
A full-stack developer trained at 42 Paris, I have over 4 years of programming experience, including 2 years specializing inweb and mobile developmentwithReactJSand **React Native**.
I design and develop applications from end to end, prioritizing code quality, performance, and user experience.
Thanks to my experience as afounding engineeron several projects, I have acquired a solid mastery oftechnical design, API integration**, and **deploymentof applications in production.
Autonomous, rigorous, and product-oriented, I enjoy transforming an idea into a concrete and scalable solution.
I collaborate easily with diverse profiles (product, design, business) and quickly integrate into new technical environments.
Looking forward to discussing and contributing to your web or mobile projects.
Darian Sereno
French
Native or bilingual
English
Fluent
Can work on-site
Paris (up to 30km)
Experience
- KaraFounding EngineerE-COMMERCESeptember 2025 - Today (11 months)Paris, FranceStack: React Native (Expo)**, **TypeScript, Hono, Better-Auth, Supabase, Drizzle, tRPCTechnical Lead- Designed theapplication architectureusing a modern stack based onTypeScript(**Hono + Supabase + Drizzle**).- Implemented **authentication**, **API integration**, and **structured database logic**.- Collaborated closely with the product team to deliver aclear, modular**, and **scalablecodebase.- Experienced withtRPCand designing end-to-endtype-safe APIsforReact Nativeenvironments.- Collaborated closely with the product team using aNotion project management system(tickets, task tracking, prioritization), ensuring **smooth and iterative delivery**.- Made reasoned use of **artificial intelligence to accelerate development**, explore technical solutions, and improve code quality.- Delivered aclear, modular, and scalablecodebase, optimized for rapid product evolution.
- DressingRoomFounding engineerE-COMMERCEJanuary 2025 - September 2025 (8 months)Paris, FranceStack: React Native (Expo)**, **TypeScript, Supabase, Express.js, Cloud storage, integration of open-source AI modelsFull-stackdevelopment of anAI-based virtual clothing try-onapplication.- Designed and developed the entiretechnical architecture(mobile application, backend, API, cloud).- Implementedimage processing pipelinesand integratedopen-source deep learning modelsfor virtual try-on.- Set upuser management**, **authentication**, and **data processingwithSupabaseand **Express.js**.- Maintained amodular architectureallowing easy integration of new AI models.- Acquired skills: **mobile-first architecture**, **AI model integration**, **complete product lifecycle management**.
- AsapesFounding EngineerLUXURY GOODSAugust 2024 - December 2024 (4 months)Paris, FranceStack: React Native (Expo)**, **NestJS**, **AWS**, **Firebase**, **TypeScript**, **StripeSolofull-stackdevelopment of apeer-to-peer clothing rentalapplication.- Designed and implemented thecomplete platform architecture(frontend, backend, database, hosting).- IntegratedStripeforsecure paymentsand createdcustom booking flowswithin the integrated messaging system.- Developedautomated workflowsfor bookings, delivery options, and special case management.- Gained experience insystem scalability**, **payment integration**, and **technical decision-makingin an entrepreneurial context.
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Education
- 1st Year Computer EngineeringEpitech Montpellier2020Première année à Epitech axée sur l’apprentissage des fondamentaux du langage C, de l’algorithmie et des bases de l’intelligence artificielle. Acquisition de solides compétences en logique de programmation, structure de données et raisonnement algorithmique.
- Expert in Computer Architecture42 ParisFormation à 42 Paris axée sur la conception logicielle, l’architecture informatique et le développement web et mobile. Maîtrise du C, C++, ReactJS et TypeScript, avec un apprentissage continu des bonnes pratiques en ingénierie logicielle. Approfondissement des compétences en intelligence artificielle appliquée, notamment l’implémentation de modèles de classification et le traitement d’image avec NumPy et TensorFlow.