Senior React Native Engineer

What do you think? Washmen’s customer app handles thousands of daily orders across a complex multi-service platform. We need a Senior React Native Engineer who thrives on platform-level challenges: building custom native modules when JavaScript hits its limits, debugging memory leaks with Xcode Instruments, and architecting for performance under mobile constraints.You’ll own the technical decisions that directly impact our customer experience—from pixel-perfect UI implementation to real-time state management across unreliable networks. This isn’t just another CRUD app wrapped in React Native. If deep native iOS/Android expertise + modern React Native architecture is your thing, let’s talk.
Job Description:ResponsibilitiesDesign and build high-performance mobile applications using React Native for iOS and Android.Build and maintain custom native modules in Swift/Objective-C (iOS) and Kotlin/Java (Android) when JavaScript isn’t enough.Debug and optimize native-level performance issues using Xcode Instruments and Android Studio Profiler. Handle crashes, memory leaks, and platform-specific problems.Integrate third-party native SDKs and handle OS updates across both platforms.Manage API integration (REST/GraphQL) and state management using React Query, with focus on caching and error handling.Translate designs into pixel-perfect UIs that work seamlessly on both platforms.Write testable code with unit, integration, and E2E tests (Jest, Appium).Mentor teammates through code reviews and pair programming.
Required SkillsNative Expertise (Critical):Solid iOS (Swift/Objective-C) and Android (Kotlin/Java) fundamentalsExperience building custom native modules and React Native bridgesDeep understanding of React Native architecture (New Architecture, JSI, Turbo Modules)Strong debugging skills with native profilers and crash analysis tools
React Native:Expert-level React Native developmentTypeScript, React Query, and modern state managementPerformance optimization and memory managementMobile-specific constraints (battery, network, memory)Other:API integration (REST/GraphQL)Testing frameworks (Jest, React Testing Library, Detox)Design implementation from FigmaApp Store/Play Store release processSecurity best practices (OWASP, secure storage)