When you enter the bustling business complex that houses DBS, Singapore\u2019s largest bank, you weave through a multi-ethnic phalanx of workers scurrying to and from their lunch breaks. Though business is done in English, Singapore is a melting pot of Asian ethnicities and languages. Noodle shops and satay houses abound, and the ding of security badges opening turnstiles becomes background music.\nThat the bank\u2019s Head of Consumer Banking Technology is a mom, a graduate of the Warsaw School of Economics and an avid kickboxer. A Polish female kickboxer driving banking strategy in Singapore? It all seems natural to Sonia Wedrychowicz. \u201cThere are many parallels between leadership and kickboxing,\u201d says the executive, whose professional pedigree not only features management stints at Citibank and Standard Charter Malaysia, but appearances on industry \u201c30 under 30\u201d and \u201c40 under 40\u201d lists.\nWe meet in DBS\u2019 Singapore headquarters the day after her team celebrates a major milestone: DBS\u2019 rollout of the world\u2019s largest API developer platform. While explaining APIs to C-level executives isn\u2019t on most people\u2019s to-do lists, Wedrychowicz was an early proponent. \u201cWe knew how this would make our customers\u2019 lives better, and how it would drive value for our partners. DBS will be even easier to do business with,\u201d she explains.\nOur conversation starts with fintech (Wedrychowicz had just returned from a conference on the topic), branching out to artificial intelligence, chatbots, blockchain, and even life stage marketing (spoiler alert: Wedrychowicz isn\u2019t a fan, preferring to analyze individual preferences and behaviors). Digital banking is a conversational anchor point. Prior to the groundbreaking API effort, Wedrychowicz helped lead DBS\u2019 digital journey, literally. She traveled regularly to India for the Digibank program of branchless banking. Forbes has since heralded DBS \u201cThe Best Digital Bank in the World.\u201d\nBut the afterglow of the prior day\u2019s API launch\u2014155 APIs and counting\u2014still burns bright. Wedrychowicz lists how DBS\u2019 new API portfolio drives value: customers accustomed to waiting for physical vouchers or e-gift cards can now redeem rewards points on demand, promising increased loyalty and transaction volumes. Those shopping for a new home can now get real-time loan qualification data on their smartphones. Even McDonald\u2019s has signed up as a DBS \u201cPayLah!\u201d partner to speed up customer transactions across Asia. Noodle bars are sure to follow.\nWith the impact of this technical undertaking still fresh I assumed Wedrychowicz would have a command-and-control leadership style (though the image in boxing gear on LinkedIn might have instilled some bias). It turns out she\u2019s not one for daily staff oversight, advocating initiative. She finds the right people, builds teams, and keeps them energized.\n\u201cMy direct reports assure me that they\u2019ll keep me in the loop,\u201d she says smiling. \u201cI tell them, \u2018No! You don\u2019t have to keep me in the loop! Just go get it done!\u2019\u201d And\u2014perhaps conjuring images of their boss in the ring\u2014they do just that.