Igor Kozar

I'm a senior React Native and React developer with 15+ years of experience building production mobile and web apps for iOS, Android and Web, working with React since 2018 and with a full-stack background in Node.js and Laravel. What I've built recently: live sports apps shipped as five branded products from one React Native codebase (iOS, Android and Web via React Native Web), with real-time scores across seven sports and smooth performance on long, constantly updating lists; the web app, React Native (Expo, TypeScript) mobile app and admin dashboard of an AI-powered sports analytics SaaS; and a Next.js website for an international tour operator. I also built a handyman marketplace app and a concrete delivery app with maps and live GPS tracking, both on my own from scratch. How I work: I focus on performance, reusable component architecture and clean UX, and I test on real devices. I use TypeScript, TanStack Query, Jest and React Testing Library, and I can build or extend the API behind a feature when needed. I'm used to joining existing codebases and communicating clearly and proactively in a remote team. What I'm looking for: a long-term remote role or contract as a Senior React Native or React developer, on a product where user experience matters. I'm based in Belgrade (CET) and can overlap with US and EU business hours.