Bengaluru-based fintech startup Kiwi, which offers bank-issued RuPay credit cards and credit lines for Unified Payments Interface (UPI) payments, is seeking $30-40 million to step up customer acquisition, people aware of the matter said.The proposed funding would be Kiwi’s largest round after the Nexus Venture Partners and Stellaris Venture Partners-backed company raised $24 million in August last year. The round was led by Singapore-based