App crashing on launch day.Fixed before your users notice.

PM assigned in 10 minutes. iOS/Android engineer starts diagnosing within the hour using Crashlytics, Sentry Mobile, or your crash reporting setup. Mobile crashes after a release are almost always caused by: a force-unwrap on an optional value that is null in a specific device or OS version combination, a deprecated API that was removed in the iOS or Android version your users have just upgraded to, a background thread accessing UI components (a threading violation), or a memory management issue causing EXC_BAD_ACCESS on older device models with less RAM. Engineer traces the crash report to the exact line, fixes the root cause, and submits a hotfix to the App Store or Google Play.

Yes. PM scopes the full submission into the session development, testing, and App Store or Google Play submission are treated as one deliverable. The engineer builds the hotfix, runs it through your existing test suite, tests on device simulators for the affected OS versions, increments the build number, archives the binary, and submits through App Store Connect or Google Play Console. For App Store submissions, PM monitors the review status and flags any reviewer questions. Expedited review can be requested from Apple for critical bug fixes PM handles that request with the documented crash impact data. Most hotfixes are approved within 24 hours of submission.

Yes. Sprint Pack (10 sessions over 2 weeks) is the standard engagement for a new mobile feature enough time to build, test across device sizes and OS versions, and submit for App Store review with buffer for the review period. Common features delivered in a Sprint Pack: onboarding flow with analytics events, in-app purchase integration (StoreKit 2 for iOS, Google Billing Library for Android), push notification integration (FCM, APNs), camera or file picker with processing, offline mode with local SQLite or Realm storage, and biometric authentication. PM scopes the feature on day 1 and breaks it into daily deliverables so you see progress every day.

Engineers are matched to your specific mobile framework and platform. For React Native: Expo and bare workflow, React Navigation, Redux Toolkit or Zustand for state, react-native-reanimated for animations, and platform-specific native module bridging when needed. For Flutter: Dart, BLoC and Riverpod state management, Dio for networking, and platform channel integration for native APIs. For native iOS: Swift and SwiftUI, UIKit for legacy codebases, Combine and async/await, and Core Data or SwiftData. For native Android: Kotlin, Jetpack Compose, Coroutines and Flow, and Room database. PM confirms the exact framework match before the session starts you are not getting a generalist learning your stack during a critical engagement.

Every QuickHire mobile engineer passes platform-specific vetting: for iOS, a live debugging exercise on a crashing Swift application plus a written assessment covering memory management, Swift concurrency (async/await, actors), SwiftUI rendering lifecycle, and App Store submission process. For Android, a live debugging exercise on a broken Kotlin application plus assessment covering Coroutines, Jetpack Compose, and Google Play policy compliance. For React Native, a debugging exercise on a broken Expo application plus assessment covering the React Native bridge, platform-specific code, and performance profiling. Portfolio review focuses on shipped App Store and Google Play applications with measurable user impact. Only the top 3% of applicants pass all stages.