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Data Scientist, Risk ML

Block

$139,000 - $245,400
Aug 13, 2025
San Francisco Bay Area, CA, US
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The business problem Square is looking to solve is to root out high-risk activity across the Square platform of products, including fraud and credit risks, and to build risk detection strategies to enable growth of the business.

Requirements

  • Familiarity with fraud/risk management, trust and safety, payments, or card business
  • Proficiency with SQL, Python and Looker
  • Hands-on work building/implementing machine learning models
  • Experience driving data-driven solutions and executing their implementation
  • Worked on ambiguous problems and unstructured questions
  • SQL, Snowflake, Databricks etc.
  • Python (Pandas, Numpy)

Responsibilities

  • Diagnose problems and develop compelling, data-driven recommendations
  • Provide thought leadership in building and executing risk management strategies for new or existing product launches
  • Design and analyze A/B experiments to measure the effectiveness of a Risk Management strategy
  • Partner with Product, Engineering, Machine Learning Engineering, Policy and Operation teams to design solutions to business problems, influence product roadmaps, and develop new products/processes
  • Use machine learning tools to develop data-driven solutions
  • Promote creative risk solutions through third-party evaluation and integration with a focus on improving the seller experience
  • Effectively present your work with senior leaders and cross-functional stakeholders on a regular basis

Other

  • BS/BA in Statistics, Mathematics, Operations Research, Management Science, Computer Science, or a related technical field, OR BS/BA in Criminal Justice, Economics, Business, or a related business field
  • 5+ years of relevant experience (or masters degree with 3+ years of experience)
  • A passion for Block's mission
  • Remote work, medical insurance, flexible time off, retirement savings plans, and modern family planning are just some of our offering
  • Travel requirements not specified