Built major modules of BlinkX EDGE marketplace app including Home, Xkart, Orders and Xresearch with 95% Figma-to-UI accuracy. Integrated Razorpay, Cashfree and Zoho APIs decreasing payment failures by 70%. Implemented WebSocket for real-time data streaming increasing sync speed by 55%. Firebase and Adjust integration boosted user retention by 20%. Delivered a seamless marketplace experience combining financial products and e-commerce within a single cross-platform Flutter application.