Job Summary: We are seeking a Senior Mobile Developer to build and evolve a high-scale, native, cross-platform mobile application in the iGaming domain, with a focus on architecture and real-time communication. Key Highlights: 1. Build and evolve a high-scale, native, cross-platform mobile application 2. Develop high-performance mobile apps using React Native and Expo 3. Serve as the mobile technical reference within the team We seek a Senior Mobile Developer with at least 7 years of solid experience in React Native, Expo, and TypeScript, to build and evolve a native, cross-platform mobile application targeting high-scale products in the iGaming segment. **Responsibilities:** **Architecture, Standards, and Advanced Development** * Develop and evolve the application ensuring modularity, scalability, clear organization, and code quality; * Maintain technical standards (structure, state management, layers, abstractions) and knowledge of DDD; * Develop high-performance mobile apps using React Native and Expo; * Master Android and iOS specifics (lifecycle, permissions, plugins); * Optimize rendering, memory usage, startup time, and bundle size; * Perform advanced development in React, TypeScript, and JavaScript. **Real-Time Communication and Resilience** * Implement and maintain stable, reliable WebSocket communication; * Design automatic reconnection, connection state management, message synchronization, retry logic, local queues, and batching; * Handle failures considering unstable networks, background/foreground transitions, and system interruptions; apply optimistic UI patterns; * Ensure data integrity in critical flows. **CI/CD, Releases, and Operations** * Contribute to and maintain mobile CI/CD pipelines (build, versioning, publishing); * Implement OTA strategies (custom alternatives based on Expo); * Monitor app stability and performance in production. **Product and Strategy** * Actively participate in refinement sessions, identifying criticality and prioritization with quality; * Serve as the mobile technical reference within the team. **Required Qualifications** * Bachelor's degree in a technology-related field or over 10 years of proven software development experience, including at least 7 years in mobile development; * Minimum 7 years of solid hands-on experience with React Native; * Advanced proficiency in React Native, Expo, TypeScript, and JavaScript; * Proven experience covering all responsibilities listed above; * Strong emphasis on code quality, readability, and scalability; * Intermediate English for technical reading. **Preferred Qualifications** * Experience building high-scale products (iGaming, Fintech, Banking, E-commerce); * Experience with real-time applications; * Practical exposure to DDD applied to mobile development; * Experience with mobile monitoring (crash analytics and performance).