Ratnadeep Simhadri is a Staff Software Engineer with 12+ years building payment and fintech systems that process over $1.68 trillion in annual transaction volume across 200+ markets. At PayPal, he architects and develops the Open Banking platform — the aggregation layer connecting thousands of global financial institutions — and builds the data insights products layered on top of it, including agentic applications that turn open banking data into actionable intelligence for merchants.

His background spans payments orchestration, open banking, checkout platforms, and large-scale distributed systems. He has designed real-time payment infrastructure serving hundreds of millions of users and extensible checkout systems supporting diverse payment methods across regions, all built for high availability and sub-second latency.

He leads cross-functional work across engineering, data science, product, and compliance, translating regulatory and business requirements into technical architecture. He mentors engineers at every level and has been recognized with enterprise-wide innovation awards. His current focus is the intersection of open banking infrastructure and AI-driven financial intelligence.