RS Software is a payments-focused technology company headquartered in Kolkata, India, with a US office in Milpitas, California. Founded by Raj Jain, the firm has spent more than three decades building payment infrastructure for banks, processors, networks and central institutions. It is the team that engineered core pieces of India's public payments stack, including the Unified Payments Interface (UPI) and the Bharat Bill Payment System (BBPS) for NPCI, and today offers a suite of cloud-native, API-led products for real-time payments, bill payments, switching, fraud and risk under a Payment Platform as a Service model.
Arpan Shah is a General Partner at Spark Capital in San Francisco, where he leads early-stage investments in AI, fintech, and data infrastructure. A Stanford-trained engineer from Kolkata, he was on the founding team at Robinhood, later founded Flannel (acquired by Plaid in 2021), and was a partner at Pear VC and a Sequoia Scout before joining Spark in November 2024.
Siddharth Jhunjhunwala is the Founder and CEO of Web Spiders Group and co-founder of SpiderX AI, a San Francisco-based enterprise AI company he has been building since 2000. Starting his entrepreneurial journey in 1995 with network solutions out of Kolkata, he has grown Web Spiders into a 290-person global operation spanning San Jose, London, Singapore, and India, known for products like Gecko (an emotion-sensing AI recruiter that appeared on BBC One's The One Show), e2m.live (an enterprise event management platform), and SpiderX's conversational AI suite used across banking, retail, and government sectors.