Mobile Engineer (iOS / Android)

About The Role The Mobile Engineer builds and maintains native mobile applications for iOS and Android that serve a large, active user base daily. The role owns features end-to-end - from architecture and implementation to release, monitoring, and iteration based on real production data. This position sits on a product engineering team that ships on a weekly cadence. Mobile quality directly drives retention and revenue, so the role carries real ownership: crash-free rates, cold start performance, and release velocity are all metrics this engineer is accountable for. Key Responsibilities Design, build, and ship native features in Swift/Kotlin (or Kotlin Multiplatform/React Native where applicable) for consumer-facing mobile products Own feature development end-to-end: scoping with product, implementation, testing, staged rollout, and post-release analysis Improve app performance and reliability - reduce crash rates, optimize startup time and memory usage, and instrument with analytics and crash reporting (Firebase Crashlytics, Sentry) Build and maintain shared design system components and ensure accessibility standards across both platforms Integrate REST and GraphQL APIs, push notifications, deep linking, and offline-first data layers with local persistence (Room, Core Data, SQLite) Participate in code reviews, enforce CI/CD pipelines (Fastlane, Bitrise, GitHub Actions), and manage App Store / Play Store release processes Collaborate with backend and design teams to define API contracts and mobile UX patterns early in the development cycle What We Are Looking For 3–6 years of mobile development experience shipping production apps to the App Store and/or Google Play Deep proficiency in at least one native platform: Swift/SwiftUI or Kotlin/Jetpack Compose Experience with modern architecture patterns: MVVM, MVI, or Clean Architecture, plus unit and UI testing (XCTest, JUnit, Espresso) Hands-on experience with CI/CD for mobile, including automated builds, code signing, and phased rollouts Solid understanding of mobile networking, threading/concurrency, memory management, and background processing constraints BS in Computer Science or equivalent practical experience Bonus: cross-platform experience (React Native, Flutter, KMP), GraphQL experience, contributions to open-source mobile libraries, or experience with feature flagging and A/B testing frameworks