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Cash App Logo

Staff Data Scientist - Financial Platform

Cash App

$239,600 - $359,400
Dec 2, 2025
San Francisco, CA, US
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Block's Financial Platform (FinPlat) organization needs a Data Scientist to support "acquiring side" A/B testing, reporting, strategic analysis, and automation to optimize payment processing, transaction costs, and authorization rates across Square, Cash App, and AfterPay.

Requirements

  • Expertise in hypothesis testing and causal inference.
  • Advanced proficiency with data, analytics, and visualization technologies (we use SQL, Looker, and Python).
  • Experience working on ambiguous problems with high business impact and resolving complex issues in innovative and efficient ways.
  • A strong understanding and willingness to be hands-on in building data pipelines and architecture.
  • Experience working in Fintech or banking.
  • Have an advanced degree.

Responsibilities

  • Establish subject-matter expertise in payment rails, focusing on cards (pre-paid, debit, credit, etc.) and bank rails (wire, ACH, direct deposit, etc.)
  • Build “soup to nuts” data products, taking raw eventing data from engineering teams and turning into actionable analyses and ML models.
  • Expand your influence in the Block Data Science community by developing and evangelizing data solutions to improve analytics insightfulness and actionability.
  • Partner with Engineering and Operations leadership to drive a culture of data-driven financial impact.
  • Influence product roadmaps and guide the Financial Operations (FinOps) team to navigate through product opportunities and problem ambiguities.
  • Resolve complex issues in innovative and efficient ways.
  • Build data pipelines and architecture.

Other

  • 12+ years of related experience (data science, preferably in payment analytics, chargebacks, or related fields) with Bachelor's degree; or 8 years and a Master’s degree; or a PhD with 5 years experience; or equivalent experience
  • At least a bachelor's degree in a technical field such as Engineering, Physics, mathematics, computer science, etc.
  • Ability to build strong relationships with cross-functional stakeholders, clearly communicating findings and influencing product designs.