Kosta is a technologist, and his interests lie at the point of fusion between technology, finance and innovation. He is the author of "The Castle And The Sandbox", a book explaining how to foster innovation in established companies.
Kosta is currently Deputy Director, Financial Services for the Poor, at the Bill & Melinda Gates Foundation, where he leads the team that focuses on digital payments. From governance through business models to technology, from ideas through architecture to development, he oversees the strategy and grants to deliver secure, reliable and affordable digital payment solutions.
Previously, he was the co-founder and leader of Innotribe, the SWIFT initiative to enable collaborative innovation in the financial industry. At SWIFT, he was also the chief architect of SWIFTNet, the backbone worldwide secure network currently connecting 8,000 banks and 1,000 corporations, and servicing daily the world economy.