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Kenz NarainenKN

Kenz Narainen

Développeur Mobile IOS/Android React Native

€590/day
Lausanne, CH
3-7 years

Average response time: 1 hour

About Kenz

Je conçois et développe des applications mobiles pour Android et IOS.
Mon obsession : créer des produits que les utilisateurs ouvrent par envie, pas par obligation. Concrètement, ça veut dire que je ne me contente pas d'écrire du code — je pense l'expérience de bout en bout. L'interface, les micro-interactions, les transitions, la première impression, ce moment où l'utilisateur comprend en trois secondes ce qu'il peut faire. Tout ça, c'est mon terrain.
Sur le plan technique, je travaille en React Native pour iOS et Android, avec une approche cross-platform qui ne sacrifie ni la performance ni la qualité de finition. J'ai déjà publié plusieurs applications sur l'App Store et le Play Store, ce qui m'a appris ce qu'on n'apprend pas dans les tutos : la rigueur du process de validation, les pièges de la performance sur des appareils anciens, l'importance d'une architecture qui tient la route quand le produit grandit.
Là où je fais vraiment la différence, c'est sur l'intégration de l'IA. Je conçois des applications où l'intelligence artificielle n'est pas un gadget marketing collé en surface, mais une vraie couche d'intelligence qui transforme l'usage : assistants contextuels, génération adaptative, fonctionnalités qui anticipent les besoins. J'intègre les API des modèles de pointe (Claude, GPT, Gemini) en pensant coût, latence et expérience.
Ce que je propose à mes clients : une vision produit, pas seulement une paire de mains. Si tu cherches quelqu'un qui prend ton brief, le retravaille, te challenge sur le design et te livre une app qui fait honneur à ton idée — on devrait se parler.
Stack : React Native, TypeScript, Expo, Supabase, Firebase, intégration LLM (Claude, OpenAI), CI/CD mobile, App Store & Play Store deployment.
  • French

    Native or bilingual

  • English

    Native or bilingual

  • Spanish

    Basic

  • Japanese

    Basic

Remote only
Primarily works remotely

Experience

  • Mobile, Freelance
    Software Engineer
    April 2025 - Today (1 year and 2 months)
    Lausanne, Switzerland
    Developed and deployed cross-platform mobile applications using React Native, delivering production ready apps on the App Store Integrated AI tools (e.g., OpenAi, Gemini) to enhance application features and automate user-centric workflows Analyzed user behavior and implemented tracking solutions to optimize user experience and drive product improvements Built and maintained scalable backend services with Node.js, including API design and database integration
    Application Mobile intelligence artificielle User Interface Design User Experience Design
  • Amplify SA
    Fullstack/Frontend Developer
    November 2022 - April 2025 (2 years and 5 months)
    Lausanne, Switzerland
    Developed a user-friendly wallet on the web platform using React.js, Python (Django), and GraphQL, ensuring smooth functionality and a seamless user experience. Designed and implemented a secure AWS architecture for a web application, including Route 53 DNS configuration to ensure high availability and optimized performance. Spearheaded of the UI/UX design and development of both front-end and back-end features, designed and created mockups in Figma, integrated them into functional UIs with React.js. Collaborated closely with designers and product managers to align user experience with business requirements. Integrated LLM such as OpenAI GPT for generating personalized marketing text, and diffusion models (Flux, DALL·E) for creating contextual images, enabling highly customized client campaigns. Built dynamic forms and developed internal management and ticketing tools to improve team workflow and organization.
  • Sopra Banking Software
    Frontend Developer
    BANKING AND INSURANCE
    February 2022 - August 2022 (6 months)
    Paris, France
    Designed and built mobile applications for decentralized identities using Ethereum Blockchain and React Native, ensuring secure and transparent user experiences.
    Developed and deployed a Flask API with MySQL, integrating Machine Learning algorithms to provide intelligent, data-driven banking product recommendations tailored to client needs. Strengthened trust and privacy for users by leveraging blockchain technology in mobile apps. Designed mockups(Figma) and launched a bank advisor app using React and Next.js, streamlining client management and offering personalized, data-backed recommendations to improve customer retention.
    SQL React Native Next.js Figma React.js

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Education

  • Master's Degree Computer Science
    EPITA
    2022
    Master's Degree Computer Science
  • Bachelor Computer Science
    CSULA
    2019
    Bachelor Computer Science

Skill set

Categories