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Become a Mobile Developer (Android/iOS/Cross-platform)
Ship production-grade apps on Android, iOS, and React Native from a single engineering mindset.
CREATED BY
S
Sahil J. [PLACEHOLDER] ★ 5.0
SDE II at TaskFlow | 6+ years of experience
About this Path
Designed for working engineers who already code but have never shipped a mobile app end-to-end. You will build real apps using Kotlin/Jetpack Compose, Swift/SwiftUI, and React Native, understand platform-specific performance constraints, and prepare for mid-to-senior mobile engineering interviews at product companies.
Path Overview
Intermediate LevelCertificate of CompletionAbout 52 hours to completeEnglish language18+ curated videosLearn online at your own pace5 modules with resourcesGamified & interactive
Path Curriculum
Kotlin for Android: Coroutines & Flow
Structured concurrency, StateFlow vs SharedFlow, lifecycle-aware collection.
Jetpack Compose UI & State Management
Recomposition model, remember/derivedStateOf, side effects, theming with MaterialTheme.
Navigation, Dependency Injection & Room
Hilt DI wiring, NavHost graphs, Room DAO patterns and migration strategies.
Android Performance Profiling
Memory Profiler, systrace, StrictMode, Baseline Profiles for app startup.
Swift Concurrency: async/await & Actors
Task groups, MainActor isolation, migrating legacy GCD code.
SwiftUI Views, Bindings & Environment
ObservableObject vs @Observable macro, ViewBuilder patterns, custom Layout.
CoreData, CloudKit & Native APIs
NSPersistentCloudKitContainer sync, CoreLocation, UserNotifications entitlements.
Xcode Instruments & Memory Debugging
Allocations instrument, retain cycle detection, zombie objects, thread sanitizer.
React Native New Architecture: JSI & Fabric
TurboModules, Fabric renderer, synchronous JS–native bridge elimination.
State Management with Zustand & React Query
Atomic state slices, stale-while-revalidate, offline persistence with MMKV.
Native Module Bridging in Kotlin & Swift
Writing NativeModule, NativeEventEmitter, and ExpoModule API wrappers.
Expo EAS Build & Over-the-Air Updates
eas.json profiles, OTA policy, code signing for managed and bare workflows.
OAuth2, PKCE & Biometric Auth
AppAuth library, secure token storage in Keychain/EncryptedSharedPreferences.
Certificate Pinning & OWASP Mobile Top 10
TrustKit, reverse-engineering defenses, jailbreak/root detection trade-offs.
Secure Local Storage & Data-at-Rest
SQLCipher, EncryptedFile API, iOS Data Protection classes.
Espresso, XCTest & Detox for E2E
Idling resources, UI test pyramids, mocking network with MockWebServer/OHHTTPStubs.
Fastlane + GitHub Actions Mobile Pipeline
Lane design, match for code signing, TestFlight and internal track automation.
Crash Monitoring & Remote Config
Firebase Crashlytics, Sentry breadcrumbs, Feature Flags with Firebase Remote Config.
Play Store & App Store Submission Playbook
ASO basics, phased rollout, review guidelines checklist, rollback strategy.
What you'll learn
- ✓Build and publish a feature-complete Android app using Kotlin, Jetpack Compose, and ViewModel/StateFlow architecture.
- ✓Build and publish a Swift/SwiftUI iOS app integrating native APIs such as CoreLocation, Push Notifications, and Keychain.
- ✓Architect a shared React Native codebase that targets both platforms with platform-specific bridging where needed.
- ✓Diagnose and fix memory leaks, jank frames, and battery drain using Android Studio Profiler and Xcode Instruments.
- ✓Implement CI/CD pipelines for mobile using Fastlane, GitHub Actions, and automated UI tests with Espresso and XCTest.
- ✓Navigate App Store and Play Store submission, code signing, phased rollouts, and crash monitoring with Sentry/Firebase Crashlytics.