Senior Mobile App Developer - Flutter/Dart

Job Title : Senior Mobile App Developer - 4 to 6 Years

Location : Bengaluru, India

Company Overview :

Big Air Lab operates at the edge of applied AI where foundational research meets real-world deployment. We craft intelligent systems that think in teams, adapt with context, and deliver actionable insight across domains.

Position Summary :

We are looking for a Senior Mobile App Developer with 2 to 3 years of professional mobile app development experience - at least 1 to 2 years of which must be dedicated to Flutter and Dart for cross-platform applications.

The ideal candidate will be well-versed in state management using Riverpod (or similar frameworks), comfortable integrating WebRTC for real-time audio/video, and capable of handling end-to-end mobile app lifecycles (from UI design to App Store/Play Store submission).

You should enjoy working on streaming/chat-style features, be adept at managing permissions and device integration (camera, microphone), and have a keen eye for responsive UI/UX design in Flutter.

Key Responsibilities :

- Develop, maintain, and optimize cross-platform mobile applications using Flutter and Dart, ensuring clean architecture and modular code.

- Implement and manage complex app state using Riverpod (e.g., StateProvider, FutureProvider, AsyncNotifier) or similar frameworks (Provider, Bloc, GetX).

- Integrate WebRTC (via flutter_webrtc) for real-time audio/video functionality, including peer-to-peer streaming, signaling (Firebase/WebSocket), and handling STUN/TURN servers.

- Build responsive, user-friendly interfaces in Flutter, designing video grids, call controls, and other UI components that adapt seamlessly across various screen sizes.

- Handle real-time UI updates for dynamic states such as mute/unmute, participant joins/leaves, and other call-related events.

- Configure and debug iOS builds in Xcode and Android builds in Android Studio, including provisioning profiles, signing certificates, and deployment pipelines.

- Manage App Store (iOS) and Play Store (Android) submission processes : prepare provisioning profiles, handle versioning, and ensure compliance with store guidelines.

- Integrate RESTful APIs and/or WebSocket connections for server communication, handling JSON payloads and ensuring efficient data parsing and error handling.

- Manage device permissions (camera, microphone, network) using packages like permission_handler, ensuring a smooth user experience and handling permission-related edge cases.

- Write unit tests and widget tests for UI components and business logic; debug cross-platform and WebRTC issues in both Xcode and Android Studio.

- Implement basic security measures and privacy compliance (e.g., encryption for media streams, GDPR/CCPA requirements) to protect user data and adhere to regulatory standards.

- Collaborate closely with designers, backend engineers, and QA teams to define requirements, review code, and deliver end-to-end features on schedule.

- Stay updated with the latest Flutter/Dart releases, WebRTC enhancements, and mobile-app-related best practices; share knowledge and mentor junior developers as needed.

- Assist in troubleshooting live production issues, perform root-cause analysis, and release timely hotfixes or updates.

Qualifications :

- Overall Experience : 3 to 6 years of professional mobile app development.

- Flutter & Dart : 2 to 3 years of dedicated experience building cross-platform apps.

- State Management : Minimum 1 year using Riverpod (or Provider, Bloc) for complex app states and handling real-time UI updates (e.g., in chat/streaming apps).

- WebRTC :1 to 2 Years of hands-on experience integrating flutter_webrtc or equivalent; familiarity with signaling mechanisms (Firebase, WebSocket).

- Cross-Platform Development : At least 1 year each working with :

1. iOS : Configuring Xcode, provisioning, signing, and debugging.

2. Android : Configuring Android Studio, managing Gradle, signing, and debugging.

3. App Store/Play Store : Experience in app submission workflows, including provisioning profiles (iOS) and signing/build configurations (Android).

- Networking & APIs : 1 to 2 years integrating REST APIs or WebSocket in mobile apps; strong understanding of JSON serialization/deserialization.

- UI/UX Design : 1+ years building responsive, user-friendly interfaces in Flutter (e.g., grids, custom controls).

- Permissions & Device Integration : 1+ years working with device permissions (camera, mic, network) and integrating native plugins.

- Testing & Debugging : 1+ years writing unit/widget tests; debugging cross-platform issues, especially around WebRTC, in Xcode and Android Studio.

- Security & Privacy : 6 to 12 months implementing encryption for media streams and ensuring compliance with data privacy standards (e.g., GDPR, CCPA).

Must-Have Skills :

- Proficient in Flutter and Dart for cross-platform UI and business logic

- Expert in state management with Riverpod and familiar with Provider, Bloc, or GetX

- Experienced integrating flutter_webrtc for real-time audio/video streaming

- Skilled in implementing signaling using Firebase or custom WebSocket

- Proficient with Xcode for iOS build configuration, provisioning, and debugging

- Proficient with Android Studio for Gradle management, signing, and debugging

- Knowledgeable about App Store and Play Store submission requirements

- Experienced in integrating REST (HTTP/JSON) and WebSocket APIs

- Skilled in designing responsive video conferencing UIs (video grids, call controls) in Flutter

- Competent in managing camera, microphone, and network permissions using permission_handler

- Able to write unit and widget tests for UI and logic in Flutter

- Experienced in debugging WebRTC and platform-specific issues in Xcode and Android Studio

- Familiar with implementing basic encryption for media streams

- Knowledgeable about GDPR and CCPA compliance requirements

Good-to-Have Skills :

- Advanced WebRTC optimization (STUN/TURN, SFU/MCU)

- Backend development (Node.js, Firebase, AWS)

- Push notifications (FCM, CallKit for iOS, Android call screens)

- Performance optimization (app size, CPU, platform channels)

- Advanced UI/UX (virtual backgrounds, screen sharing, animations)

- Analytics and monitoring (Sentry, Firebase Analytics, WebRTC metrics)

CI/CD and DevOps :

- Pipelines with GitHub Actions/Bitrise

- Streamlined App Store and Play Store deployments

- Accessibility and localization (i18n, RTL, screen reader support)

- Native development (Swift/Kotlin for platform-specific features)

- AI/ML integration (noise cancellation, live captions, face detection)

Preferred Qualifications :

- Bachelors degree in Computer Science, Engineering, or a related field.

- Strong Git workflow experience (feature branches, code reviews, pull requests).

- Demonstrated ability to mentor junior developers and conduct code reviews.

- Proven track record of delivering at least one production-grade Flutter app to both App Store and Play Store.

- Familiarity with Agile/Scrum methodologies and collaborative tools (Jira, Confluence).

Perks & Benefits :

- Competitive salary with performance-based bonuses.

- Opportunity to work on cutting-edge real-time audio/video applications.

- Flexible working hours.

- Access to the latest development tools and technologies.

- Professional development budgets for conferences, courses, and certifications.

- Wellness programs, and team-building events.