• Lead the end-to-end design process for mobile (iOS/Android) engagement systems, from discovery to final handoff • Own the full engagement loop strategy, including interaction design, motivation systems, and progression models • Translate product requirements and behavioral goals into wireframes, user flows, mockups, and interactive prototypes • Design intuitive, cross-generational mobile experiences that support shared family interaction on a single device • Architect scalable interactive systems including achievements, progression models, challenges, streaks, and reward frameworks • Design engagement loops that can evolve from lightweight gamification into deeper interactive systems as the product matures • Apply behavioral psychology and motivation theory to drive sustained engagement while maintaining ethical design standards • Ensure interactive systems encourage curiosity and learning without manipulative mechanics • Design for retention metrics such as Day 1, Day 7, Day 30, and 90-day engagement • Maintain and evolve a scalable mobile design system in Figma • Ensure consistency and usability across platforms by adhering to Apple’s Human Interface Guidelines and Google’s Material Design system • Collaborate closely with Product Managers, Engineers, and Data Scientists in agile sprints to iterate and refine solutions • Leverage AI tools to accelerate ideation, prototyping, documentation, and iteration across the design lifecycle • Champion AI-enabled design workflows that increase velocity and scalability within a lean startup environment • Conduct user research and usability testing across both adult and youth audiences to validate interaction models • Support QA during development sprints by reviewing builds and ensuring pixel-accurate implementation • Communicate design rationale clearly to cross-functional teams and executive stakeholders