David is a partner in Oliver Wyman's Customer Innovation and Growth practice, bringing more than 35 years of experience leading global technology and engineering organizations across payments and fintech.

Having served as CTO and CIO at WEX, Worldpay, FIS, Fiserv, and Green Dot, he brings an end-to-end view of the payments ecosystem, spanning core infrastructure and data platforms through product delivery. His work focuses on modernizing complex technology environments while building high-performing engineering organizations in highly regulated industries.

Most recently, David served as executive vice president and CTO of the newly independent Worldpay following its divestiture from FIS, where he led a 4,500-person global organization covering software, product, QA, architecture, and data across five countries. He oversaw the engineering separation from FIS and helped prepare Worldpay for independent operations and a potential IPO, including establishing public-company-ready engineering governance, audit alignment, data integrity, and operational reporting. He also designed Helix, a $200 million platform modernization program involving 500 people.

Across WEX and Worldpay, David has driven large-scale technology transformations combining platform simplification, cloud and data modernization, AI adoption, and improvements to the developer experience. His work has delivered measurable operating impact, including approximately 20% higher engineering productivity, $40 million in annual savings from an open-loop payments platform, roughly $28 million in run-rate reduction through offshore engineering expansion, and an Agile transformation that reduced release cycles from 18 months to two weeks.

David holds a Bachelor of Science (Honors) in computer science and microprocessor systems from the University of Strathclyde. His technical training has supported a career spanning software engineering, technology transformation, and senior leadership across the global payments industry.