I’m a Data Scientist with over a decade of experience in fraud prevention, anomaly detection, and risk assessment.

Currently, I lead the development of advanced ML and AI solutions for fraud prevention and risk management at Klarna, focusing on core products across key EU and UK markets.

Here, you'll find various projects and experiments I work on in my (limited) free time — if I had more, there’d definitely be more projects! 😄

• 🧑‍💻 Data Scientist with 10+ years of experience.
• 🛍️ Data Science Manager at Klarna, a leading global FinTech company, where I lead a team of talented data scientists delivering high-impact ML projects using cutting-edge methodologies.
• 🎓 M.Sc. in Information Systems Management from Technical University of Berlin.
• 🕵️‍♂️ Academic Research: Explored fraud detection within the Ethereum blockchain as part of the eBiz international project, utilizing node2vec and graph embeddings.
• 💳 Industry Experience: At RatePay, I helped build a real-time fraud detection engine for banking transactions.
• 📈 Open-Source Contributor: Was contributing to scikit-uplift, a Python library for Uplift modeling.
• 🤖 Passionate about machine learning, data science, and solving complex problems.
• 🇩🇪 Based in Berlin.
• 📁 Check out my portfolio at www.legostay.com.

Let’s connect and collaborate! 🚀