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Karolina is the Co-founder and Director of Research at Charity Entrepreneurship and a board member at Charity Science. She leads the research team, which aims to find the most evidence-based, cost-effective and neglected interventions, and to train others in starting high impact charities to implement them.

She also serves as a Fund Manager for EA Funds' Animal Welfare Fund.

Before starting Charity Entrepreneurship, she co-founded the Polish Foundation for Effective Altruism, which worked to increase the effectiveness of NGOs. Prior to that, she worked on measurement and evaluation for Charity Science Health and Open Cages, and as a researcher for IBM and the Jagiellonian University. During her Master's studies, she became the youngest university lecturer in her country.