Profile picture of Maciej Kostro

Maciej Kostro

A digital finance professional with over 20 years of experience in banking and technology, focused on building secure, standardized, and user-centric financial services.


Current Roles & Contributions

At ING Bank in Amsterdam, I am the Service Owner for XS2A (Open Banking) Services. Developers interested in our PSD2 and Open Banking solutions can explore resources at the ING Developer Portal.

European Payments Council

I contribute to developing pan-European financial standards as the Chair of the API Standardisation Taskforce at the European Payments Council (EPC).

Berlin Group

I am an active member of the Berlin Group's openFinance Taskforce, helping to shape the future of open finance frameworks.

As part of my focus on education and standard adoption, I am the author of The Berlin Group openFinance API Framework Foundational course, designed to help professionals implement these crucial European standards.


Scheme² The Open Finance Blueprint

Scheme² Book Cover

To further support the industry's transition to Open Finance, I authored Scheme² The Open Finance Blueprint.

This strategic toolkit offers an actionable framework for building the data-sharing schemes required by new European regulations. It provides a practical guide for banks, fintechs, and regulators on designing and implementing collaborative Open Finance ecosystems, turning a compliance challenge into a strategic opportunity.