Haystack
← Back to Jobs
Technology

iOS Developer

MagicforceDenver, CO🇺🇸United StatesPosted 28 Jul 2026

Quick Overview

Work Type
Hybrid
Level
Mid Senior

Job Description

Skills: -

Mandatory skills

  • 10+ years of experience in iOS and Android mobile application development, including architecting and developing multiple applications across versions.
  • Proficient in Swift for iOS development and Kotlin for Android, with deep understanding of language features and best practices for both platforms.
  • Strong understanding of iOS UI guidelines (Human Interface Guidelines) and Android UI guidelines (Material Design), ensuring apps meet platform-specific design principles.
  • Experienced in implementing native libraries using the iOS SDK and Android SDK, including working with frameworks like UIKit, Core Data, Core Animation, and Jetpack components.
  • Proficient in using storage options such as UserDefaults, Core Data, SQLite (iOS) and Shared Preferences, Room, SQLite (Android) for local data management.
  • Experienced in integrating RESTful web services, handling JSON and XML parsing, and managing network requests with URLSession (iOS) and Retrofit, OkHttp (Android).
  • Expertise in Object-Oriented Design (OOD) and architecting scalable mobile applications using patterns like MVC, MVVM, MVP, and VIPER for iOS, and MVVM, MVP for Android.
  • Experience in unit testing, integration testing, and test-driven development (TDD) for both iOS (using XCTest) and Android (using JUnit, Espresso).
  • Solid experience working in Agile/Scrum environments, collaborating with cross-functional teams to deliver high-quality applications on time.
  • Strong experience with Git for source code management, including collaboration in teams using GitHub, GitLab, or Bitbucket.
  • Proficient in debugging and optimizing apps for performance, including memory and CPU usage, on both iOS (using Instruments in Xcode) and Android (using Android Profiler).
  • A strong team player with excellent communication skills, able to articulate technical concepts to both technical and non-technical stakeholders.

Skills

SQLite
Swift
Scrum
TDD
Agile
Android SDK
Git
JUnit
Kotlin
UIKit
Xcode
iOS
Android

Similar jobs