Designing Realtime Exchange, a DeFi superapp on MegaETH, involved shaping the product experience around the idea that a high-performance blockchain needs a unified financial interface rather than fragmented applications. Most DeFi ecosystems require users to jump between separate platforms for swapping, lending, borrowing, trading, or launching tokens, which creates friction, breaks user flows, and fragments liquidity. The goal of Realtime Exchange was to bring these core financial primitives into a single cohesive platform where users can perform multiple actions without leaving the product. As the product designer, I worked on structuring the product architecture, defining the core user journeys, and designing interfaces that allow users to seamlessly move between different financial actions while maintaining clarity and ease of use.