Karol Jaroszewski
Karol is working for Visa for over 6 years. He is creator of Visa Data Science Lab team in Central and Eastern Europe, he is managing this team from the very beginning. He also has over 12 years of experience in banking, where he created and implemented data based solutions. He specializes in the use of Big Data in business, both in banking and currently at Visa, advising managers in taken decisions. He supports modern techniques of data use, especially in the field of model building, propensity testing and prediction. Data enthusiast. He graduated from the Warsaw School of Economics in the field of Quantitative Methods in Economics and Information Systems.
Construction Industry 2026
AI in Business 2026
Portfolio Insurance 2026
25 years of Portfolio Conferences
The Portfolio Group's event division has been shaping the professional events market for over two decades, continuously in a market-leading position. We organize 60 business conferences and nearly 10 awards ceremonies nationwide each year, setting the direction in 9 industries: economy, agriculture, real estate, healthcare, finance, automotive, energy, IT, sustainability. We reach 40,000 participants annually. The name Portfolio Events is a guarantee of high-quality professional content and outstanding B2B and B2C networking – in premium hotels, exclusive environments, with business networking and lead generation opportunities. So far, more than 7,000 speakers and nearly 50,000 companies have participated in our events: experts, top executives, decision-makers, opinion leaders, owners. Join us and level up - we provide the top community of the domestic business sphere!