About the role

Role Overview

Mobile Engineer (iOS / Android) working on the core architecture of native mobile apps. You will build high-performance features, improve responsiveness and offline reliability, and help the team iterate rapidly without sacrificing stability or memory performance.

Responsibilities

Design and implement high-performance features in Swift (iOS) or Kotlin (Android) using modern architectural patterns such as MVVM, Clean Architecture, or MVI
Optimize performance: reduce memory usage, minimize startup time, and support smooth 60fps rendering
Build and maintain offline storage strategies using Room, Core Data, SQLite, or local caching
Write comprehensive unit, integration, and UI automation tests to prevent production regressions
Collaborate with backend teams to define efficient REST or GraphQL API contracts for mobile network conditions
Participate in code reviews and architecture discussions
Automate delivery via CI/CD tooling such as Fastlane, Bitrise, or GitHub Actions

Requirements

3–6 years of professional software engineering with strong native mobile experience (iOS or Android)
Deep proficiency in Swift/iOS SDK or Kotlin/Android SDK, including asynchronous programming concepts
Solid understanding of platform-specific design guidelines and UI tooling (SwiftUI / Interface Builder, Jetpack Compose)
Experience with dependency injection (Dagger/Hilt or Swinject)
Experience with reactive/asynchronous libraries: RxJava, Coroutines/Flow, or Combine
Bachelor’s degree in Computer Science/Engineering or equivalent practical experience

Bonus

Published multiple apps to the Apple App Store or Google Play
Experience with cross-platform frameworks such as Flutter or React Native

About Scale.jobs

Scale.jobs is hiring for a company building and scaling native mobile applications used by large numbers of daily active users. The role focuses on core mobile architecture, performance, and offline-capable user experiences, in collaboration with product and backend teams.