Nikogiannis Karantzis (also known as John) is the CEO and Managing Director of ISX Financial EU Plc, a banktech company that provides payments, e-money, and KYC solutions to the iGaming and broader regulated sectors. With over 20 years of experience spanning payments, electronic money, online media, AML, defence, and engineering, he has led ISX Financial since 2015.
Karantzis holds a background in engineering, law, and business and is an alumnus of The University of Western Australia. He regularly speaks at industry events such as Merchant Payments Ecosystem and contributes to discussions on open banking, instant payments, and fintech innovations for regulated industries, including iGaming.
Under his leadership, ISX Financial has developed a combined payments stack and infrastructure offering end‑to‑end transactional banking, FX, remittance, and payment processing. The company is public with more than 10,500 shareholders and continues to expand its footprint in Europe through partnerships and instant payment solutions.
Career History
| Company | Role | Dates |
|---|---|---|
| iSX Financial | Founder, Managing Director & CEO | – present |