iOS Developer

Required experience in Senior iOS engineer

Core iOS Development Fundamentals

• Swift

  (primary language) deep understanding of language features, memory management (ARC), generics, protocols, extensions, etc.

• Objective-C

  familiarity with reading, debugging, and sometimes maintaining legacy codebases.

• UIKit

  — strong grasp of building and customizing interfaces programmatically and via Storyboards/XIBs.

• Auto Layout & Constraints

  — dynamic, responsive UIs.

Modern iOS Development Stack

• SwiftUI

  — for modern declarative UI development.

• Combine

  — Apple’s native reactive framework for handling asynchronous events.

• Concurrency

  — proficiency in Grand Central Dispatch (GCD) and Swift Concurrency (async/await, Task, etc.).

• Core Data

  or

  Realm

  — local data persistence solutions.

• Foundation & Core Libraries

  — understanding of URL Session, Codable, Notification Center, File Manager, etc.

Architecture & Patterns

• MVVM

  ,

  MVP

  ,

  MVC

  ,

  VIPER

  , or

  Clean Architecture

  — ability to choose and implement appropriate patterns.

• Modularization

  — managing large codebases with multiple frameworks or modules.

• Dependency Injection

  — manual or using tools like

  Swinject

  .

Testing & QA

• Unit Testing

  — XC Test, mocking frameworks (e.g. Cuckoo, Mockingbird).

• UI Testing

  — XC Test UI, XC UI Test.

• Snapshot Testing

  — tools like iOS Snapshot Test Case or using SwiftUI previews for UI validation.

• TDD/BDD

  — optionally, familiarity with test-driven approaches.

Networking & APIs

• URL Session

  ,

  Alamofire

  ,

  Graph QL

  clients.
• Parsing via Codable, Swifty JSON, or Object Mapper.
• Error handling, retry strategies, offline fallback.
• API versioning and handling network failures gracefully.

Build, Release, and Deployment

• Xcode & Build Configs

  — schemes, targets, configurations.

• CI/CD

  — Fastlane, GitHub Actions, Bitrise, bamboo for automating builds, tests, screenshots deployment.

• App Store Submission

  — provisioning profiles, certificates, TestFlight, App Store Connect.

• Crash Reporting

  — Firebase Crashlytics, Sentry, Instabug.

Tooling & Ecosystem

• CocoaPods

  ,

  Swift Package Manager

  ,

  Carthage

  — dependency management.

• Instruments

  — profiling for memory leaks, performance, CPU usage.

• Static Analysis

  — Swift Lint, SonarQube, etc.

• Debugging

  — LLDB, breakpoints, network sniffers (e.g. Proxyman, Charles Proxy).

Specialized/Advanced Areas

• Animations

  — Core Animation, UI View Property Animator, SwiftUI transitions.

• Security

  — Keychain, SSL pinning, secure storage, biometric auth (Face ID, Touch ID).

• Background Execution

  — background fetch, push notifications, background tasks.

• Core Bluetooth

  ,

  Core Location, AV Foundation

  ,

  ARKit

  , etc. — depending on app requirements.

• Accessibility

  — Voice Over, Dynamic Type, UI Accessibility traits.

Leadership & Collaboration Skills

• Mentoring junior devs, conducting code reviews.
• Collaborating with design (Figma, Zeplin), product, and QA.
• Writing architecture/tech docs, RFCs.
• Breaking down epics into technical deliverables.
• Advocating for best practices, performance improvements, and clean code.

Bonus: Other Useful Skills

• Swift Concurrency + Combine

  together.

• Cross-platform exposure

  (React Native, Flutter, or Kotlin Multiplatform Mobile - KMM).

• Analytics

  integration – Firebase, Amplitude, Segment.

• A/B Testing frameworks

  .
• Experience with

  internal tooling

  or

  design systems

  (like building reusable UI kits).