Mercle - Flutter hiring Assignment

BONUS ASSIGNMENT - Flutter Developer Position

This is a Flutter-focused technical assessment for a Web3 privacy-first identity verification application.

Your Task

1. Find and document bugs in the existing Flutter code
2. Suggest new features appropriate for a Web3 privacy-focused app
3. Review code quality and suggest architectural improvements

Setup

flutter pub get
flutter run

Backend APIs have been removed. You'll find YOUR_API_BASE_URL placeholders throughout the codebase. Add mock data where needed to make the app functional for testing.

Reference: lib/config/app_config.dart and lib/services/mock_data_service.dart

App Features

• Phone OTP Authentication
• Face Liveness Verification
• Anonymous Identity Management
• Rewards & Gamification (Points, lootboxes, daily streaks)
• Social Vouching System
• Phantom Wallet Integration (Solana)

What to Focus On

Bug Identification

• UI/UX issues (layout, overflow, spacing, alignment)
• Flutter widget issues (constraints, rendering)
• State management bugs
• Navigation issues
• Performance problems
• Responsiveness across screen sizes
• Error handling and edge cases

Feature Suggestions

Consider Web3 and privacy focus:

• Enhanced privacy features
• Better Web3 integration
• Decentralized identity features
• Privacy-preserving social features
• Blockchain-based rewards
• Improved wallet integration
• Privacy controls and settings

Code Quality Review

• Architecture and code structure
• State management approach
• API service patterns
• Error handling
• Code reusability
• Widget composition
• Performance optimizations
• Security considerations

Tech Stack

• Framework: Flutter
• State Management: Provider
• Blockchain: Solana (Phantom Wallet)
• Biometrics: AWS Rekognition Face Liveness
• Storage: SharedPreferences
• HTTP: http package