Delivery Module Lead
Mphasis Ltd
Work from Office
Full Time
Min. 5 yearsJob Description
Delivery Module Lead
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.
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