Principal Engineer, Unity Rewards

Job Description:

• Design and architect the mobile client (iOS/Android) for a greenfield consumer rewards application.
• Develop highly engaging, gamified UI/UX components including daily streak mechanics, dynamic offer walls, progress trackers, and real-time wallet balances.
• Connect the consumer app directly into Unity’s backend event-pipelines and ML attribution models.
• Architect robust on-device state management that handles virtual currencies, ledger updates, and offline/online syncing.
• Work alongside ML and backend teams to implement secure event tracking.
• Mentor senior mobile engineers, set the standard for code quality, and define release pipelines.

Requirements:

• 8+ years of experience building native (Swift/Kotlin) or high-performance cross-platform (React Native/Flutter) consumer mobile applications at scale.
• Proven track record building apps with high DAU/MAU that rely on gamification, loyalty programs, or fintech/wallet features.
• Deep understanding of modern mobile architecture patterns (MVVM, Clean Architecture, VIPER), memory management, and performance profiling.
• Experience handling complex asynchronous data streams, real-time websocket connections, and local persistence for offline-first capabilities.
• You care deeply about micro-interactions, animations, and how an app feels in the user's hands.

Benefits:

• Comprehensive health, life, and disability insurance
• Commute subsidy
• Employee stock ownership
• Competitive retirement/pension plans
• Generous vacation and personal days
• Support for new parents through leave and family-care programs
• Office food snacks
• Mental Health and Wellbeing programs and support
• Employee Resource Groups
• Global Employee Assistance Program
• Training and development programs
• Volunteering and donation matching program