Senior React Native Developer — 4-week Project

About the Role At Blazity we build modern digital products using React.js, Next.js, and API-first architectures for international clients. We focus on delivering clean, scalable, production-grade solutions with strong engineering ownership and high development standards. We are currently looking for a React Native Developer to join a short-term mobile project estimated for 4 weeks, with a possible 1-week extension if needed. The ideal candidate is someone who can take ownership of the implementation, work independently, and deliver high-quality mobile applications using React Native and Expo. Start: ASAP Our Requirements Must-have Technical Skills • Strong commercial experience with React Native • Hands-on experience with Expo ecosystem • Very good knowledge of TypeScript • Experience with Expo EAS build and deployment pipelines • Solid understanding of mobile app architecture and production-ready development • Experience working with CI/CD pipelines • Ability to write maintainable, scalable, and well-structured code • Strong debugging and problem-solving skills Nice-to-have • Experience with Apple / Google in-app payments • Experience integrating RevenueCat • Familiarity with mobile analytics solutions (e.g. Firebase Analytics) • Experience publishing apps to App Store / Google Play Soft Skills • Ownership mindset — we are looking for engineers who understand and own their technical decisions • Strong communication skills and proactive collaboration • Ability to work independently in a fast-paced environment • Attention to code quality and maintainability • English at a communicative level (B2/C1) Technology Stack • React Native (Expo) • TypeScript • Expo EAS Pipeline • React Native StyleSheet • useTheme (optional theming support) • RevenueCat • Apple / Google in-app payments • Firebase Analytics (optional) • CI/CD pipelines What You Will Do • Build and deliver mobile application features using React Native and Expo • Maintain high engineering standards and clean architecture • Configure and manage EAS build pipelines for iOS and Android • Collaborate closely with the team to deliver production-ready features within tight timelines • Take ownership of implementation decisions and code quality • Support deployment and release processes Project Details • Duration: 4 weeks • Possible extension: +1 additional week • Start date: ASAP • Work style: Remote • Location: Poland preferred Salary Range • B2B: 140-160 PLN net+VAT/h What We Offer • Fast-moving, hands-on project environment • Fully remote collaboration from Poland • Opportunity to work with experienced React and Next.js engineers • High ownership and autonomy • International projects and modern tech stack