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Yvo CilonYC

Yvo Cilon

React Native Developer

€800/day
Heemskerk, NL
8-15 years

Average response time: 1 hour

About Yvo

Product-gedreven fullstack developer met 12+ jaar ervaring in het bouwen van web- en mobile apps van concept tot productie. Core stack: TypeScript, React, React Native, Node. Specialisatie: AI-integraties (OpenAI, Claude, embeddings, vector search) en mobile apps die daadwerkelijk de stores halen.

Waar ik het beste in ben:
• 0-to-prod mobile apps (React Native + native modules waar nodig)
• AI-features die werken in productie, niet alleen in demo's
• Fixed-scope MVP-trajecten (4–8 weken) waar ik volledig eigenaarschap neem

Recente opdrachtgevers: DPG Media (Sportnieuws.nl), VodafoneZiggo, Schiphol, Coinmerce, LeasePlan, Kramp Hub.

Daarnaast lanceerde ik zelf meerdere AI-producten (smofta.nl, InstantReplAI, AI Intent First). Dat verschil tussen code schrijven en een product live zetten maakt mij anders: ik denk mee over product en architectuur, ship snel, en weet wat in productie werkt.

Ik werk het beste in trajecten met korte lijnen, duidelijke scope, en ruimte om efficiënt te bouwen. Fixed-price MVP's of langere freelance-opdrachten met productownership, beide prima.
  • Dutch

    Native or bilingual

  • English

    Fluent

Remote only
Primarily works remotely

Experience

  • DPG Media
    React Native Developer (Freelance)
    January 2025 - Today (1 year and 5 months)
    Built consumer sports news app from scratch for major Dutch media company, surpassing legacy app with additional features
    Integrated native advertising and analytics SDKs, enabling monetization and user behavior insights Developed native modules (Swift/Kotlin) for platform-specific functionality not available in React Native Architected serverless backend (AWS/SST) aggregating multiple data sources into a unified, performant API
    Implemented push notification system with deep linking, driving user re-engagement Optimized app performance and UX, reducing load times and improving user experience
  • VodafoneZiggo
    Full Stack Developer (Freelance)
    January 2025 - April 2026 (1 year and 3 months)
    Freelance React Native developer at VodafoneZiggo, contracted via Hypersolid, working on the team that builds their consumer mobile app.

    What I do here:
    • Building new features in a large, existing React Native codebase
    • Cross-functional collaboration with product, design, and backend teams
    • TypeScript, React Native, Node.js
    • Focus on stability, performance, and a smooth user experience for an app with a large consumer user base
    React Native Typescript NestJs
  • Countoo
    Co-founder
    January 2025 - Today (1 year and 5 months)
    Developed InstantReplAI: social media automation platform evolved from comment responses to embeddable forms, quizzes, polls, and AI research tool for evergreen content Built smofta.nl: AI news aggregator combining multi-source scraping, vector embeddings for article matching, fact sheet generation, content rewriting, and AI image generation Built UX analysis tool: automated screenshot capture with AI-generated UX improvement recommendations
    Developed AI-powered Dutch sales interview system: bidirectional voice interviews for sales qualification Refined AI-assisted development workflows and created reusable boilerplates to ship products faster

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Skill set

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