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Senior React Native Engineer

Smart Working • United Kingdom
Full Remote
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Senior React Native Engineer role focused on owning day-to-day development of an existing iOS and Android mobile application built with React Native, TypeScript, and Expo. Responsibilities include improving code quality and stability, building and releasing features across both platforms, integrating third-party SDKs, and working largely independently with minimal technical oversight. Requires 5+ years of professional software engineering experience with hands-on React Native, TypeScript, Expo/EAS, and Supabase experience.

Key Highlights
Remote role with a UK-based company working UK hours (45 hours/week)
Own development of existing React Native app with TypeScript and Expo
Work independently to improve code quality, stability, and engineering standards
5+ years experience required in React Native, TypeScript, and mobile delivery
Experience with Supabase, API/SDK integration, and data migration needed
Key Responsibilities
Take ownership of day-to-day development of the existing React Native application
Improve code quality, application stability and engineering standards
Build, maintain, test and release mobile application features across iOS and Android
Test application functionality on physical iPhone and Android devices
Migrate historical application data from Supabase to PostHog
Support product data analysis
Maintain and extend paywall and subscription flows using Superwall
Integrate third-party SDKs and services
Independently manage assigned development work from scope through release
Technical Skills Required
React Native TypeScript Expo
Nice to Have
Experience with paywalls, subscriptions and in-app payments
Experience with PostHog or other product analytics platforms
Experience setting up crash reporting and production monitoring
Awareness of mobile application security practices
Experience improving early-stage, AI-built or prototype codebases
Experience implementing camera or photo uploads, share sheets, deep links or content import functionality
Experience with native iOS or Android debugging
Experience developing grocery, meal planning or consumer shopping applications

Job Description

About Smart Working

At Smart Working, we believe your job should not only look right on paper but also feel right every day. This isn't just another remote opportunity - it's about finding where you truly belong, no matter where you are. From day one, you're welcomed into a genuine community that values your growth and well-being. Our mission is simple: to break down geographic barriers and connect skilled professionals with outstanding global teams and products for full-time, long-term roles. We help you discover meaningful work with teams that invest in your success, where you're empowered to grow personally and professionally.

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