5–8 years · Senior — React Native · JavaScript · Native modules · Offline storage · App release · Performance
Assesses the severity and impact of the bug on user experience; evaluates potential workarounds or mitigation strategies; prioritises bug fix over non-essential features; communicates urgency to the team and stakeholders; adjusts release timeline or scope as necessary based on team input.
If the deadline cannot be extended and the bug is not fixed, how would you communicate this to stakeholders and users?
Describes the nature of the incident and its immediate impact on users; outlines the steps taken to investigate and resolve the issue; mentions specific tools or techniques used for diagnosis; highlights the communication strategy with both users and team members; reflects on lessons learned and changes implemented to prevent recurrence.
What warning signs did you overlook that could have indicated this issue earlier?
Instruments app startup metrics to quantify delay; profiles the JavaScript bundle size and evaluates initial component loading; inspects third-party libraries for performance hits; considers code-splitting or lazy loading strategies; documents changes and monitors impact post-implementation.
After implementing changes, users still report slow startup times. What additional measures do you consider to further improve performance?
Checks the bridge implementation for proper event handling; reviews the native module’s lifecycle methods for timing issues; verifies correct data types are being passed between native and JavaScript; uses logging extensively to trace the communication; tests on different devices and emulator configurations to reproduce the issue.
You found a timing issue. What specific strategies could you use to manage the lifecycle better?
Names the specific migration process and its goals; details the key challenges encountered, such as legacy code or data structure changes; explains how communication was handled with the team and stakeholders; outlines the testing strategy applied pre and post-migration; quantifies the impact on performance or user experience.
What would you do differently if you had to lead a similar migration again?
Identifies what data should persist across uninstalls; checks current offline storage implementation and data saving logic; evaluates potential use of cloud sync for essential data; considers user preferences for data retention; outlines changes needed to improve the persistence mechanism.
How would you handle user expectations regarding data retention if it involves changes to the current offline storage system?
Load six more — you will get questions you have not seen first.
Give me six more →Say your answer out loud before revealing. Reading the answer first feels like learning and is not.