Android Developer

Quess Selection & Services; Singapore; On-site; SGD 70,000 - 110,000; Full time

Job summary

Quess Selection & Services is seeking an experienced Senior Android Developer in Singapore. You will lead Kotlin-based Android development for large-scale applications, ensure security and performance, and independently troubleshoot production issues across multi-team codebases.

The role emphasizes hands-on Kotlin, Android SDK mastery, and collaboration with cross-functional teams to deliver robust mobile experiences for customers and internal users.

Qualifications

• 4+ years of commercial Android development experience with Kotlin.
• Experience delivering production Android apps and maintaining large-scale projects.
• Ability to independently investigate and resolve complex technical issues across multiple teams.

Responsibilities

• Develop and maintain large-scale Android applications using Kotlin.
• Ensure security, performance, and reliability across Android versions and devices.
• Troubleshoot production issues including crashes, ANRs, and UI performance bottlenecks.
• Collaborate with multiple engineering teams to integrate features and improve app quality.

Skills

Kotlin Development

Android SDK & Architecture

Jetpack Compose

Concurrency & Performance

Android Security

Production Debugging

Application Maintenance

Tools

Android Studio

Android Debugging Tools

Heap Analysis

Crash Reporting Tools

CI/CD for Mobile

Job description

We are looking for an experienced Senior Android Developer with strong hands‑on expertise in Kotlin and large-scale Android application development. The ideal candidate will have a proven track record of delivering secure, high-performance Android applications, with the ability to independently troubleshoot complex production issues and work within established, multi-team codebases.

Key Responsibilities & Requirements

• Kotlin Development: Minimum 4 years of commercial Android development experience using Kotlin, with recent hands‑on experience writing production code. Comfortable working with existing Java‑based codebases.
• Android SDK & Architecture: Strong understanding of Android Activity and Fragment lifecycles, configuration changes, state restoration, process death, task and back‑stack management, background execution and multi‑module application architecture.
• Jetpack Compose: Experience with Jetpack Compose, particularly integrating Compose components into existing View‑based applications, is an advantage.
• Concurrency & Performance: Hands‑on experience with Kotlin Coroutines, Flow, structured concurrency, dispatchers and cancellation. Ability to diagnose race conditions, main‑thread bottlenecks and memory leaks using heap analysis and debugging tools.
• Android Security: Practical knowledge of Android Keystore, encrypted local storage, BiometricPrompt, certificate pinning, permissions, scoped storage and root/tamper detection. Experience handling sensitive customer data securely.
• Production Debugging: Ability to independently investigate and resolve production issues involving application crashes (ANRs), UI performance, jank, frame drops, startup time and device/OS fragmentation.
• Application Maintenance: Experience maintaining and enhancing large‑scale Android applications while ensuring reliability, performance and compatibility across different Android versions and devices.

Strongly Preferred Skills

• Experience managing Android SDK and target API upgrades for large production applications, including edge‑to‑edge implementation and Google Play Store compliance.
• Hands‑on experience with Android App Links, deep links, custom URL schemes and Digital Asset Links verification.
• Experience troubleshooting Android OS, target SDK, WebView and Chromium‑related compatibility issues.
• Experience integrating native Android applications with web‑based journeys using WebView, deep links and session/configuration hand‑offs.
• Background in banking, financial services, fintech, digital wallets or other secure, high‑volume consumer applications.
• Experience developing or maintaining internal SDKs, design systems or shared frameworks used across multiple development teams.
• Familiarity with mobile observability, crash reporting and performance monitoring tools.
• Experience managing mobile CI/CD pipelines and native test automation.

Experience & Qualifications

• Minimum 4 years of professional Android development experience, primarily using Kotlin.
• Strong hands‑on experience delivering and maintaining production Android applications.
• Ability to independently investigate complex technical issues and drive them through to resolution.
• Strong problem‑solving skills and ability to collaborate effectively across multiple engineering teams.

EA License Number: 23C2060 Registration ID is R22109715