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Data Scientist Intern, Summer 2026 - St. Louis, MO

Mastercard

Salary not specified
Sep 12, 2025
O’Fallon, MO, US
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Mastercard's Data Engineering team aims to streamline and automate repetitive aspects of data science to accelerate innovation in AI/ML-driven fraud detection.

Requirements

  • Hands-on experience working in both Python and SQL
  • Knowledge of Cloud or Big Data Technologies is a plus (Data Bricks, Spark in the Cloud, Hadoop)

Responsibilities

  • building high-quality, scalable ETL pipelines
  • developing robust feature engineering workflows
  • creating shared tools that empower data scientists across the organization
  • deploying model features
  • ensuring seamless integration into production environments
  • accelerate innovation in AI/ML-driven fraud detection

Other

  • Currently enrolled in a bachelor’s degree program majoring in Computer Science or a related field with a graduation date of Winter 2026 – Spring 2027
  • Proficient in Microsoft Office applications
  • Excellent communication skills
  • ability and willingness to tackle complex problems
  • candidates must be eligible to work in the United States, now as well as in the future, without employer sponsorship