Machine Learning Fintech Services Fraud Prevention Engineer
Mercado Libre24 hours ago
Medellín, ColombiaMid Level
Responsibilities
- Design end-to-end machine learning solutions, including feature definition, model training, and monitoring.
- Develop and evaluate risk models for payment fraud prevention.
- Analyze behavioral and user event data to generate risk-pattern detection signals.
- Create network- and graph-based features to identify relationships between entities and uncover hidden networks.
- Monitor model performance, stability, and degradation in production.
- Ensure data quality and sound modeling practices in decision-making processes.
Requirements
- Advanced proficiency in Python and SQL for data processing, analysis, and modeling.
- Experience developing and deploying machine learning models across their full production lifecycle on large-scale data analytics platforms such as BigQuery.
- Knowledge of relational modeling and network and graph analysis.
- Experience implementing architectures and solutions for anomaly, risk, or payment fraud detection.
- Experience using version-control tools and AI-assisted development interfaces.
Benefits
- Hybrid work arrangement at the Colombia site in Medellín.
Categories
About Mercado Libre
Mercado Libre builds an e-commerce marketplace and fintech infrastructure for consumers and merchants across Latin America. It monetizes through marketplace transaction fees, payment processing (Mercado Pago), logistics and fulfillment (Mercado Envíos), advertising, and credit products. Founded in 1999 and headquartered in Buenos Aires, it operates in 18 countries and is publicly traded on Nasdaq under the ticker MELI.