Analista Senior de Prevención de Fraude – Account & Device Takeover

About the role

Mercado Libre is looking for a Senior Fraud Prevention Analyst to protect its e‑commerce and financial services ecosystem across Latin America. You will work with large‑scale data, AI models and cross‑functional teams to detect and stop account and device takeover attacks.

Key responsibilities

• Analyze massive data sets to uncover fraud patterns and generate actionable insights.
• Lead the design, development and evolution of AI agents that safeguard user accounts and devices.
• Monitor key fraud indicators, investigate deviations, and drive continuous improvement.
• Investigate complex fraud cases and translate findings into scalable solutions.
• Collaborate with technology and data engineering teams to ensure solution scalability and reliability.

Required profile

• Advanced student or graduate in Engineering, Economics, Data Science or related fields.
• Strong analytical mindset with solid knowledge of data analysis, statistics, exploratory data analysis and machine learning.
• Hands‑on experience using AI tools to solve real‑world problems.
• Background in fraud prevention, operational risk or digital security within fintech, banking or payments ecosystems.

Required skills

• Machine Learning
• Data Analysis
• Statistical Modeling

What we offer

• Opportunity to work in a fast‑growing, entrepreneurial environment.
• Access to challenging, innovative projects with high impact.
• Collaborative culture with experienced professionals.
• Supportive work atmosphere focused on learning and growth.