About Us

Building the future of payments with trust and technology.

Who We Are

Diametric Software is a European fintech software company dedicated to enabling secure, compliant and scalable payment solutions. Established in 2015 and headquartered in Dublin, we empower e‑money institutions, wallets and payment processors to accelerate their product roadmaps while meeting ever‑evolving regulatory standards.

Our Mission

Our mission is simple: to deliver precision‑engineered technology that makes digital payments safe, seamless and compliant. We believe that businesses should focus on innovation while leaving the complexities of payments integration and compliance to us.

Our Presence

From our base in Ireland, we serve clients across Europe. Recognising the growth of fintech in Greece, we are launching a dedicated Athens branch to support local partners and clients. This new office will provide on‑the‑ground expertise, bilingual support and deeper collaboration with organisations such as TORA Wallet, enabling us to better understand and serve the Greek market.

Leadership Team

CEO

John O'Sullivan

Chief Executive Officer & Founder

Country Manager

Maria Papadopoulos

Country Manager – Greece

CTO

Eva Martens

Chief Technology Officer