I contributed to the user interface (UI) and user experience (UX) refresh for the Nike Training Club mobile app, optimizing the user journey for millions of global fitness enthusiasts. Leveraging human-centered design principles and A/B testing methodologies, I crafted a visually compelling and intuitive interface that seamlessly integrates with Nike's wearable technology ecosystem. The redesigned app boasts an information architecture overhaul, featuring dynamic content carousels and micro-animations to enhance user engagement and drive feature discoverability. This data-driven approach resulted in a significant increase in app session times and user conversions.