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Shanon Castellino
Executive Director
DBS Bank
Shanon Castelino is a senior transaction banking and product leader at DBS Bank, where he leads product strategy and development across collections and platform services within Global Transaction Services (GTS).
With over 20 years of experience spanning transaction banking, payments and product management, Shanon brings deep expertise in payments, cash management and digital financial infrastructure. He has been instrumental in shaping and commercialising innovative payment and collection solutions, working at the intersection of business, technology and evolving industry needs.
Speaking at SFF 2026
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11:30am–12:00pmThu 19 NovMerchant AgendaMerchant Experience Zone (Hall 6)Open
Others
Expanding Payment Choice: Enabling PayNow for the Everyday Merchant
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Shanon CastellinoExecutive DirectorDBS Bank
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Aaron WongChief Executive OfficerPayPal Singapore
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Marcellus ChanExecutive Director & Head, Singapore Payments & Receivables Cash Product, Global Transaction BankingOCBC
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Elicia ChuahDeputy Director (Team Leader)Monetary Authority of Singapore (MAS)Moderator
About this session
As PayNow becomes more embedded in everyday commerce, attention is increasingly turning to the merchant experience across the payment journey.
This session explores how that experience can be made simpler and more predictable: how deep-linking can reduce friction at checkout and scale across the ecosystem; what protections and responsibilities are needed when payments go wrong; and how scheme-level standards can support more consistent outcomes while preserving flexibility in how banks serve their customers. -
