We are building a unified ecosystem for 200,000+ Daily Active Users. Our goal is technical parity: whether a user interacts with us via a browser or a mobile app, the experience must be instantaneous and reliable. As a Staff Engineer, you will own the architectural bridge between our Next.js web platform and our Flutter mobile application, ensuring a Write Once, Run Anywhere philosophy that actually works at scale.
Responsibilities:
1. Multi-Platform Architecture
- Unified Design System: Architect a design system (using Tools like Flutter-Web or Figma-to-Code pipelines) that ensures visual and functional consistency across Web, iOS, and Android.
- Shared Logic Strategy: Lead the strategy for sharing business logic (Auth, State Management, API layers) across platforms—leveraging TypeScript for web and Dart for Flutter, or exploring Kotlin Multiplatform (KMP) for core logic.
- Hybrid Interop: Manage the complexities of WebViews and JS Bridges within hybrid environments, ensuring seamless data passing and authentication persistence between native and web layers.
2. High-Scale Performance (Mobile & Web)
- Flutter Optimization: Optimize Flutter rendering for 60 FPS performance. You'll be responsible for identifying and fixing jank using DevTools, optimizing heavy list views, and managing complex widget trees.
- Binary Size & Bundle Management: Maintain strict budgets for App Store/Play Store binary sizes and Web JS bundles to ensure high conversion in regions with varied network conditions.
- Over-the-Air (OTA) Strategy: Implement and manage OTA update systems (like Shorebird for Flutter or custom CodePush-style solutions) to bypass store delays for critical hotfixes.
3. Infrastructure & Reliability
- Universal CI/CD: Architect a pipeline that handles Fastlane for mobile deployments and optimized Vercel/Docker builds for web, ensuring a unified release cadence for 200k DAU.
- Observability: Set up cross-platform monitoring using Sentry, New Relic, or Firebase Crashlytics to maintain a 99.9% crash-free session rate across all devices.
Success Metrics (Your KPIs)
- Performance: Achieve a < 2s Time to Interactive on Web and a < 500ms App Launch time on Mobile for the 95th percentile.
- Reliability: Maintain a combined Client-Side Error/Crash Rate < 0.03%.
- Efficiency: Increase engineering velocity by achieving >30% code/logic reuse between the Web and Flutter codebases.
- App Quality: Maintain a minimum 4.5-star rating on the App Store/Play Store through rigorous performance and UX engineering.
Technical Requirements
- Deep Flutter Expertise: 4+ years of Flutter experience with a deep understanding of Provider, Riverpod, or BLoC patterns and the Dart FFI.
- Modern Web Mastery: Expert-level React 19+, Next.js, and TypeScript.
- The Hybrid Bridge: Proven experience shipping high-traffic apps that utilize Native Channels or specialized Platform-specific implementations.
- Scale Experience: You have previously managed a frontend ecosystem for a product with at least 1 Lakh+ DAU.
- Hardware Savvy: Knowledge of how to optimize for low-end Android devices and older browser versions without compromising the experience for high-end users.
The Staff Level Impact
- The Bridge-Builder: You don't just write Flutter or React; you define how they talk to each other. You are the final word on cross-platform technical debt.
- Mentorship: You will upskill Web engineers in Dart/Flutter and vice-versa, creating a truly T-shaped engineering culture.
- Future-Proofing: You stay ahead of the curve, evaluating the impact of Wasm, Server-Driven UI, and AI-generated layouts on our specific scale.
