Building a cross-platform mobile trading application at Trackk with a strong focus on real-time market data handling and reliable trade execution. Designed and implemented the core order placement flow enabling users to execute buy and sell trades seamlessly. Integrated WebSocket-based market data streams with backend trading APIs to ensure accurate LTP updates. Implemented Provider-based state management to handle complex trading states including price updates, order validation and execution status. Optimized UI rendering to efficiently handle high-frequency market data changes reducing UI update latency by ~30%. Improved order placement responsiveness enabling ~35% faster trade execution experience during volatile market conditions.