Senior Mobile Developer (iOS & Android) – Madison, WI

About the role

HYR Global Source is seeking experienced mobile developers for two senior positions in Madison, WI. One role focuses on native iOS development using Swift, while the other concentrates on native Android development with Kotlin. Both positions operate in a hybrid model, requiring two days on‑site each week.

Key responsibilities

• Design, develop, and maintain native mobile applications for iOS or Android platforms.
• Integrate RESTful APIs and backend services into mobile apps.
• Implement and evolve app architecture using patterns such as MVC or MVVM.
• Collaborate with cross‑functional teams through Git‑based version control.
• Participate in code reviews, testing, and performance optimization.

Required profile

• 8+ years of professional software development experience.
• Bachelor’s degree in Computer Science, Information Technology, or a related field.
• U.S. work authorization (U.S. citizens preferred, other valid authorizations accepted).
• Proven track record of delivering production‑grade mobile applications.

Required skills

• Swift, Xcode, iOS SDK, UIKit, SwiftUI
• Kotlin, Android Studio, Android SDK, XML layouts, Jetpack Compose
• REST API integration
• MVC, MVVM architectural patterns
• Git and collaborative development workflows