kolkata
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Crizac built a ₹1,042 crore business behind the study-abroad desk
Thousands of education agents bring the students. Universities pay the commissions. Crizac connects the two - and is buying its way into more of the journey.
A $4,000 Fine Built Harshvardhan Kariwala's Compliance Machine
A forgotten filing cost his bootstrapped startup $4,000. Then a city found the little tool he built to stop it happening again - and accidentally gave him his next company.
RS Software
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
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
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.