Senior Android Developer (Kotlin)

About the role

A staffing provider is recruiting an experienced Senior Android Developer with strong hands-on expertise in Kotlin and large-scale Android application development. The ideal candidate has a proven track record of delivering secure, high-performance Android apps, can independently troubleshoot complex production issues and works within established, multi-team codebases.

Key responsibilities

• Develop Android applications in Kotlin, including integrating Compose components into existing View-based apps
• Maintain and enhance large-scale Android apps, keeping them reliable, performant and compatible across Android versions and devices
• Independently debug production issues such as ANRs, UI performance, jank, frame drops, startup time and device/OS fragmentation
• Handle sensitive customer data securely, using keystore, encrypted storage, biometrics and certificate pinning

Required profile

• Minimum 4 years of professional Android development experience, primarily with Kotlin
• Recent hands-on experience writing production code and maintaining production apps
• Ability to solve complex technical problems independently and collaborate across engineering teams

Required skills

• Kotlin and Android SDK, including Activity and Fragment lifecycles, configuration changes, state restoration, background execution and multi-module architecture
• Jetpack Compose (advantageous)
• Kotlin Coroutines, Flow, structured concurrency, dispatchers and cancellation
• Heap analysis and debugging tools to find race conditions, main-thread bottlenecks and memory leaks
• Android security: Keystore, encrypted storage, BiometricPrompt, certificate pinning, permissions, scoped storage and root/tamper detection
• Preferred: SDK/API upgrades, Android App Links, WebView integration, CI/CD pipelines, test automation, mobile observability and a background in banking, fintech or digital wallets