Delivery Module Lead

Role description

Role: Senior Mobile App Developer (Cross-Platform – iOS & Android

About the Role

We are looking for a technically strong Mobile App Developer to join our team and take ownership of an existing cross-platform application built on the Ionic Framework with React JS . The ideal candidate will have hands-on experience diagnosing and resolving critical production issues — particularly app crashes and performance/slowness problems — across both Android and iOS platforms.

Key Responsibilities

• Debug, troubleshoot, and resolve app crashes, memory leaks, and performance bottlenecks in a live production mobile application.

• Analyze crash logs, stack traces, and performance profiling data (Android Studio Profiler, Xcode Instruments, Firebase Crashlytics, Sentry, etc.) to identify root causes.

• Optimize app startup time, rendering performance, and responsiveness across both Android and iOS.

• Maintain and enhance the existing Ionic + React JS codebase, ensuring consistent behavior across platforms.

• Work with native plugins/bridges (Capacitor/Cordova) to resolve platform-specific issues.

• Conduct code reviews, refactor problematic modules, and implement best practices for stability and performance.

• Collaborate with QA, backend, and DevOps teams to reproduce, triage, and fix defects.

• Set up or improve monitoring, logging, and crash-reporting mechanisms for ongoing visibility into app health.

• Document root causes and fixes for recurring issues to prevent regression.

Required Skills & Experience

• mobile app development experience with Ionic Framework (Capacitor and/or Cordova).

• Strong proficiency in React JS (hooks, state management, component lifecycle).

• Proven experience building and maintaining cross-platform apps for Android and iOS .

• Solid understanding of native build tools: Xcode , Android Studio , Gradle, CocoaPods.

• Hands-on experience with performance profiling and crash debugging tools (Crashlytics, Sentry, Instruments, Android Profiler, LogCat).

• Experience identifying and fixing memory leaks, thread/UI blocking issues, and slow rendering.

• Familiarity with native plugin development/integration (Capacitor plugins or Cordova plugins).

• Strong grasp of JavaScript/TypeScript fundamentals.

• Experience with REST APIs, state management libraries (Redux/Context API), and offline data handling.

• Version control (Git) and CI/CD pipeline familiarity for mobile builds.