• Developed and maintained backend features for a Point-of-Sale application, implementing 4 core areas – sales, orders, enterprise-wise reporting, and breakage using Golang and PostgreSQL, while fixing and enhancing existing workflows. • Contributed to TradeX, an AI-based trading platform for backtesting and live automated trading, integrating 2 broker platforms – ICICI Direct and Upstox using OAuth, order WebSockets, and live market-data connections; published real-time market updates through NATS. • Built real-time trading charts using Next.js and TypeScript by consuming live backend and WebSocket data, contributing to both backend integration and frontend visualization of trading information. • Developed a cloud storage service for storing trading signals, orders, and order outcomes, using Golang, PostgreSQL, REST APIs, JWT, and Cloudflare R2; also resolved 40+ backend and application issues and reduced application response times by 25% through API, database, and real-time communication optimizations.