Mobile Engineer interview practice

iOS/Android cross-platform depth: lifecycle, offline-first sync, performance on low-end devices, and release trains.

Topics this interview probes

App lifecycle Offline-first sync Performance on low-end devices Cross-platform trade-offs Release & rollout Push & background work

Design an offline-first data layer that syncs reliably when the network returns. What conflict rules do you pick?
Your app’s cold start doubled after a feature release. Walk me through the investigation.
When would you argue against cross-platform for a new product surface?

The live interviewer generates fresh, role-tailored questions — and drills down when your answers are vague.