Mateusz Koziarski

Senior data scientist with 9 years of experience in education technology, learning analytics, decision science. Expertise in answering business questions, designing research, leading projects, mentoring junior analysts. Experienced in building predictive models, evaluating products, analyzing behavior and performance, conducting experimental and quasi-experimental studies, translating complex statistical findings into actionable business decisions. Skills : advanced statistics, machine learning, forecasting, causal inference, counterfactual modeling, experimental design, A/B testing, data visualization, R, Python, SQL, H2O.ai, Tableau, Power BI