Ondrej has been working in the field of Information Security for more than 15 years. He has worked as a senior information security consultant in the banking and utilities sectors on various IT projects, as well as as an Internal and External IT auditor in banking. He has been working for Slovenská Sporitelňa since 2013 and in the CISO position since 2018.

He has been with Oracle for 23 years. During this time, he held various positions in application development, integration, identity management, access control, and application security. He currently focuses on database technologies, data integration and data security.