Designs and maintains responsive e-commerce website, email, product-detail, campaign, and brand assets. Supports UX layouts, wireframes, design-system components, developer handoffs, accessibility, image optimization, and mobile-first experiences. Coordinates with e-commerce, merchandising, marketing, analytics, and development teams; reviews website implementations, performs desktop and mobile QA, creates A/B test variations, and uses performance insights and customer feedback to improve digital creative and customer experience.