With more than 20 years of experience in payment transactions, this expert specializes in card-based, electronic, and paper payment systems, merchant acquiring, and check processing. Their expertise includes the design, implementation, and operation of merchant acquiring programs, as well as analysis of payment processing systems, transaction economics, interchange structures, and chargeback and reconciliation processes across domestic and international markets. Their experience spans global payment environments, including work across North America, Europe, the Middle East, Asia, and other international regions, with involvement in multi-currency acquiring platforms and large-scale payment processing systems integrated with major card networks and financial institutions.

Building on extensive industry leadership, this expert has served as Managing Director of a payments consultancy since 1999, advising financial institutions, government agencies, merchants, and technology companies on complex payment transaction projects. Their work includes global consulting engagements involving system design, profitability analysis, operational optimization, and large-scale platform development supporting numerous financial institutions worldwide. They have also played key roles in high-profile litigation and regulatory matters, including multi-billion-dollar payment card antitrust litigation, interchange fee disputes, and international regulatory proceedings, as well as forensic accounting investigations involving identification and recovery of significant financial losses. Earlier experience includes senior roles in banking and network services, with responsibilities in payment network operations, settlement systems, large-scale merchant portfolio conversions, and implementation of enterprise-level processing and check systems.

In addition to professional experience, this expert holds a Master of Arts (M.A.) in International Policy Studies and a Bachelor of Arts (B.A.) in Political Science. Their professional contributions include authorship of industry publications, presentations on payment systems and compliance standards, service on the editorial board of a payments industry publication, and co-invention of a patented foreign currency conversion technology. This expert has over 10 years of expert witness experience, including litigation consultation, deposition testimony, and courtroom testimony in matters involving payment card systems, merchant acquiring, interchange fees, and industry practices.