Senior AI Engineer, Big Data & AI Solutions

Mastercard is seeking a Senior AI Engineer to join their Security Solutions Data Science team in O'Fallon, Missouri. This role focuses on developing AI and machine learning capabilities to enhance fraud detection within the global payments ecosystem. Daily responsibilities include building and improving large-scale data and feature pipelines using tools such as Apache Spark, PySpark, Python, and SQL. The ideal candidate should have professional experience with big data engineering and AI/ML, particularly in CI/CD-driven environments. Familiarity with the movement of large-scale data through various stages, from raw inputs to production deployment, is essential. While experience with Generative AI, RAG, LLMs, or agentic AI is advantageous, the primary requirement is a strong foundation in large-scale data engineering and production AI/ML. This position is suited for individuals who are adept at transforming high-volume data into actionable insights and have a solid understanding of monitoring and optimizing machine learning models. The employment type is not specified in the advert.