Senior Mobile Developer (React Native + Kotlin) | Long-Term Product Development

We are looking for an experienced Senior Mobile Developer to join our team and help build the next generation of our mobile platform. This is not a simple CRUD application. We're building a production-grade product that will continue evolving over the next several years, so we're looking for someone who enjoys solving technical challenges, contributing to architecture, and writing maintainable code. Initially, you'll help improve our existing mobile application while building several new features. Long term, you'll play an important role in shaping the architecture of the product. Responsibilities Develop new features for both iOS and Android Build reusable, maintainable UI components Integrate REST APIs and WebSocket-based real-time features Optimize application performance and startup time Implement offline-first functionality with local synchronization Debug production issues and improve application stability Collaborate with designers and backend developers Participate in architecture discussions and code reviews Maintain high code quality through testing and documentation Required Skills React Native (3+ years) TypeScript Kotlin Android SDK REST APIs Authentication (JWT/OAuth) SQLite or Realm Git Firebase Push Notifications Nice to Have Expo Jetpack Compose Native module development Background services Maps & GPS BLE integrations Stripe Supabase CI/CD (GitHub Actions, Bitrise, Codemagic) App Store & Google Play release experience What We're Looking For We're not just looking for someone who can implement screens. We're looking for someone who can: understand product requirements recommend better technical solutions think about scalability write clean, maintainable code communicate clearly work independently To Apply Please include: Links to 3 production mobile apps you've built. Which parts of those apps you personally developed. Whether you prefer React Native, Kotlin, or a hybrid approach for long-term products, and why. Your experience with offline data synchronization. Your availability and hourly rate. Please don't send generic proposals. We'd rather read a short proposal that demonstrates you understand the project than a long list of technologies.