Cross Platform Framework Experience Questions

Discuss hands-on experience with React Native and/or Flutter, understanding of trade-offs between native and cross-platform development, and scenarios where each approach is optimal. Be prepared to explain why a company might choose cross-platform frameworks for certain products.

HardTechnical

82 practiced

As mobile tech lead you must decide whether to adopt React Native, Flutter, or continue with native for a new product line. Prepare a 6-12 month roadmap and decision framework covering hiring and training impact, code reuse targets, KPIs for success, initial pilot projects, risk assessment, cost estimates, and clear fallback or stop-of-work criteria.

EasyTechnical

90 practiced

Describe how you decide whether to implement platform-specific UI for iOS and Android or to share a single UI implementation in a cross-platform app. Include considerations like user expectations, maintenance cost, accessibility consistency, and platform conventions.

HardTechnical

75 practiced

Explain how to implement complete crash reporting and observability for a cross-platform app that includes JS/Dart stack traces and native crashes. Cover tool selection, capturing and grouping errors, symbolication process for Android (mapping.txt/proguard) and iOS (dSYM), handling minified JS bundles and source maps, and a postmortem debugging workflow.

MediumTechnical

86 practiced

Describe the steps and key code pieces to implement a React Native native module in Kotlin for Android that subscribes to accelerometer sensor updates and emits events to JavaScript. Discuss lifecycle handling, permission checks, sampling rate, event throttling, and how to avoid flooding the JS thread.

EasyTechnical

84 practiced

Explain your step-by-step approach to debugging a crash or UI glitch that reproduces only on a physical Android device and not on the emulator for a React Native or Flutter app. Include tools, logs to collect, device metadata to capture, and quick triage checks you would run before deeper analysis.

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