Flutter Developer

Role Description

This is a full-time remote role for a Flutter Developer at ChatSpark. As a Flutter Developer, you will be responsible for building, maintaining, and enhancing mobile applications. Your day-to-day responsibilities will include designing user interfaces, implementing features, debugging, testing, and collaborating with cross-functional teams to deliver seamless user experiences. You will play a vital role in contributing to the technical direction of our applications and ensuring optimized performance and scalability.

Key Responsibilities

• Own the complete development cycle: feature planning → implementation → testing → deployment → post-release support.
• Build and maintain the ChatSpark Android application using Flutter, ensuring high performance and stability at scale.
• Translate product requirements and UI/UX designs into pixel-perfect, production-ready code.
• Architect and implement core features including real-time gaming flows, voice calling integration, and creator monetization modules.
• Debug and resolve SDK-level issues including memory leaks, crashes, and compatibility conflicts.
• Stay updated on SDK deprecations and version upgrades; proactively migrate before breakage.
• Build a fully responsive UI that works flawlessly across a wide range of Android device sizes — from small budget phones (4-inch) to large-screen devices (6.7-inch+).
• Implement adaptive layouts using Flutter's widget system (MediaQuery, LayoutBuilder, responsive grid patterns) — no hardcoded pixel values.
• Work with the design team to implement design tokens, theming (dark/light mode support), and maintain UI consistency across the entire app.
• Optimize scroll performance, list rendering (lazy loading), and image/asset caching for real-world Indian network conditions.
• Monitor crash reports (Firebase Crashlytics or equivalent) post-release and fix critical issues within defined SLAs.

Must-Have Skills

• 1+ years of professional Flutter development experience with shipped Android applications.
• Strong command of Dart language and Flutter framework (widgets, state management, navigation).
• Proven experience integrating payment gateway SDKs in a production app.
• Hands-on experience with real-time audio/video SDK integration.
• Deep understanding of Android build system: Gradle, signing, APK/AAB generation, and Play Store submission.
• Experience building responsive UIs that work across diverse Android screen sizes and resolutions.
• Familiarity with at least one state management solution (BLoC, Provider, Riverpod, or GetX).
• Experience with Firebase (Crashlytics, Analytics, FCM Push Notifications).
• Strong debugging and profiling skills using Flutter DevTools.