Mobile App Developer - iOS / Android

About the role

NEXT Ventures is hiring a Mobile App Developer who will join its core engineering team to build a flagship mobile application from the ground up. The role is open to iOS specialists (SwiftUI) or Android specialists (Jetpack Compose), both using Kotlin Multiplatform for shared business, networking and data logic.

Key responsibilities

• Develop and maintain high-quality native iOS apps with Swift and SwiftUI, or Android apps with Kotlin and Jetpack Compose.
• Help shape the application's architecture and technical direction, and build flexible, responsive layouts across devices.
• Integrate shared Kotlin Multiplatform modules and work with third-party APIs, libraries and services.
• Write clean, documented code, optimise performance (rendering, caching, scrolling, launch time) and debug stability issues.
• Collaborate with product managers and UX/UI designers, and take part in Agile development.

Required profile

• 3+ years of professional iOS development or 4+ years of professional Android development.
• Experience shipping and maintaining production applications.
• Ability to work with cross-functional teams, take part in code reviews and communicate technical decisions clearly.
• Willingness to learn the other mobile ecosystem when needed.

Required skills

• iOS: Swift, SwiftUI, RESTful APIs, Git; iOS specialists also need MVVM/MVC/TCA or Clean Architecture, Swift Package Manager and CocoaPods.
• Android: Kotlin, Jetpack Compose, Android SDK, MVVM or MVI, Ktor or Retrofit, Gradle Kotlin DSL and Version Catalogs; CS degree preferred.
• Plus: Kotlin Multiplatform (KMP), AI coding tools such as GitHub Copilot, and custom charts with CoreGraphics/Swift Charts or Compose Canvas.

The process includes a 30-minute HR interview, an assessment stage and two further interviews.