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Core Programming Concepts
Object-Oriented Programming
- Explain the difference between inheritance and composition. How do you decide which one to use in your mobile applications?
- What are the SOLID principles, and how do you apply them in mobile development?
- How do you handle memory management in your preferred mobile platform (iOS/Android)?
Data Structures and Algorithms
- Which data structures do you commonly use in mobile development and why?
- How would you implement efficient data caching in a mobile app?
- Explain how you would optimize a list view with thousands of items.
Platform-Specific Knowledge
Android Development
- What is the lifecycle of an Android Activity? How do you handle configuration changes?
- Explain the difference between Service, IntentService, and JobScheduler.
- How do you implement background tasks in Android 8.0 and above?
- What are the key components of Android’s architecture components (ViewModel, LiveData, Room)?
iOS Development
- Explain the differences between frames and bounds in iOS.
- What is ARC (Automatic Reference Counting), and how does it work?
- How do you handle memory leaks in iOS applications?
- Describe the difference between strong, weak, and unowned references.
Architecture and Design Patterns
Mobile Architecture
- What architectural patterns have you used (MVC, MVVM, MVP, Clean Architecture)?
- How do you ensure separation of concerns in your mobile applications?
- Explain dependency injection and how you implement it.
State Management
- How do you handle state management in your applications?
- What strategies do you use for offline data synchronization?
- How do you implement real-time updates in your apps?
Performance and Optimization
App Performance
- What metrics do you use to measure app performance?
- How do you optimize battery consumption in your applications?
- What strategies do you employ to reduce app size?
Memory Management
- How do you identify and fix memory leaks?
- What tools do you use for performance profiling?
- How do you handle large image loading and caching?
Testing and Quality Assurance
Testing Strategies
- What types of tests do you write for your mobile applications?
- How do you approach test-driven development in mobile development?
- What tools do you use for automated testing?
Debugging
- What debugging tools do you use regularly?
- How do you handle crash reporting and analytics?
- Describe your approach to solving complex bugs.
Security
Mobile Security
- How do you secure sensitive data in mobile applications?
- What encryption methods do you use for data storage?
- How do you implement secure network communications?
API Integration
Networking
- How do you handle REST API integration?
- What strategies do you use for error handling in network requests?
- How do you manage OAuth authentication?
User Experience
UI/UX Implementation
- How do you ensure smooth animations and transitions?
- What strategies do you use for responsive design?
- How do you handle different screen sizes and orientations?
Project Experience
Problem-Solving
- Describe a challenging technical problem you solved recently.
- How do you approach technical debt in your projects?
- What was your most successful mobile app project and why?
Team Collaboration
- How do you handle code reviews?
- What version control strategies do you use?
- How do you document your code and APIs?
Best Practices
Coding Standards
- What coding standards do you follow?
- How do you ensure code maintainability?
- What tools do you use for code quality assurance?
Emerging Technologies
Modern Development
- What’s your experience with cross-platform development frameworks?
- How do you keep up with new mobile development trends?
- What are your thoughts on reactive programming in mobile development?
Behavioral Questions
- How do you handle tight deadlines and changing requirements?
- Describe a situation where you had to make a difficult technical decision.
- How do you collaborate with designers and backend developers?
Tips for Interviewers
- Adapt questions based on the candidate’s experience level
- Focus on practical scenarios rather than theoretical knowledge
- Allow candidates to explain their thought process
- Pay attention to problem-solving approaches
- Evaluate communication skills during technical discussions
Tips for Candidates
- Prepare concrete examples from past projects
- Be ready to discuss both successes and failures
- Show enthusiasm for continuous learning
- Demonstrate problem-solving abilities
- Be honest about knowledge gaps
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