Mobile Developer Coding Challenge

Build a small, high-quality mobile app that displays and lets users browse a grid of curated photos from Unsplash, then view each photo fullscreen with metadata.

• Platform & Language

  • Android: Kotlin + Jetpack Compose
  • iOS: Swift 5+ + SwiftUI

• API Docs:
  https://unsplash.com/documentation

Functional Requirements

1. Grid View

   • Paginated, infinite-scrolling grid of photos
   • Preserves each image’s aspect ratio (no cropping)
   • Supports both portrait & landscape orientations

2. Detail View

   • Tap any grid item to open fullscreen detail
   • Displays photo, author name, description/alt text, like count, etc.
   • Swipe left/right to navigate between photos
   • On dismiss, grid scroll position retains the last-viewed photo

Quality & Delivery

• Repository Setup

  • Fork from the mobile-coding-challenge repo
  • Keep the fork public until the review is completed

• Commit Hygiene

  • Small, atomic commits with descriptive messages

Bonus (Pick Any)

• Unit tests
• Dark mode support
• Offline caching of the entire photo feed using a local DB
• Share a photo link via the system share sheet
• Custom transition animation between grid ⇄ detail

Evaluation Criteria

• Correctness: Builds, runs, meets core requirements, no crashes
• Code Quality: SOLID principles, clean layering, readability
• Architecture: Separation of concerns, testability
• UX Polish: Smooth scrolling, placeholders, error handling
• Git Hygiene: Clear history