Principal Engineer - Mobile Development (Flutter)

Role & responsibilities

What You'll Do (Responsibilities)

• Design and Implement Architecture:

  Design and implement a scalable, maintainable architecture for a multi-platform Flutter application from scratch that can scale (Web, Android, iOS). This includes making key decisions on architecture, state management (e.g., BLoC, Riverpod), navigation, modularization, and overall app structure.

• Technical Leadership & Standards:

  Act as the technical lead and mentor for the multi-platform team, establish coding standards, best practices, and development workflows.

• Testing and CI/CD:

  Establish testing strategies (unit, widget, integration) and set up the CI/CD pipeline.

• Performance Optimization:

  Obsess over performance, profiling, identifying bottlenecks, and fine-tuning the app for smooth (60fps) rendering, fast load times, and efficient memory usage.
• Implement performance fine-tuning strategies, including widget optimization, lazy loading, and memory management.
• Ensure Flutter Web applications deliver native-like experiences with optimized performance across mobile and browser.

• Native Integration:

  Develop and maintain custom native plugins (Kotlin/Swift) as needed to interface with platform-specific APIs and deliver complex features.

• Technology Adoption:

  Stay up to date with Flutter and mobile/web development trends. Drive adoption of modern state-management (BLOC, Provider, Redux, MVVM/MVP) and other emerging technologies.

• Observability:

  Be an expert in mobile observability tools with proven ability to optimize critical user flows.

What We're Looking For (Requirements)

Must Have

• Experience:

  8-12 years of professional software engineering experience, with a minimum of 4 years building, shipping, and maintaining complex Flutter applications for Android, iOS, and Web. You must have significant experience working on a production mobile app and Website that scaled successfully.

• Flutter Expertise:

  Deep, expert-level understanding of the Dart language, Flutter framework, architectures, Dependency Management, State Management, Patterns, anti-patterns, and ecosystem.

• Architecture & Design:

  Demonstrable experience designing and implementing robust, scalable mobile architectures (e.g., Clean Architecture, MVVM, modular design).

• Proven experience

  in building and scaling consumer-grade mobile and web applications with millions of active users. Experience working in mobile and web application development for customer-facing D2C or E-Commerce is a plus.

• Hands-on experience

  with CI/CD Pipelines, release management & mobile testing tools.

• Optimization Mastery:

  Deep understanding of NFRs performance tuning, latency, load time, app size, and overall reliability at scale.

• Flutter Web:

  Must have worked in Flutter Web development with an understanding of browser-specific optimizations.

• UI/UX:

  Knowledge of responsive design and building adaptive Uls for multiple screen sizes. Advocate for user experience while balancing technical constraints and business objectives.

• Testing:

  Experience with Unit testing, Widget Testing, and Integration Testing.

• Problem Solving & Debugging:

  Exceptional analytical ability, along with problem-solving and debugging skills.

• Native Familiarity:

  Familiarity with native development (Kotlin for Android, Swift for iOS) is essential for building custom bridges and plugins.

Good to Have

• Understanding of Flutter Internals is a plus.
• Experience working in mobile application development for customer-facing D2C, E-Commerce, or a fast-paced consumer internet company.
• Native to Flutter Migration experience
• Knowledge of mobile tools for Observability, Application Performance Monitoring, Product Analytics and A/B Testing.

Experience in promoting and implementing mobile engineering best practices