Senior Data Scientist, Cash App

  • San Francisco, CA, USA
  • Full-time
  • Current Square Employee?: Apply via go/jobs

Company Description

Cash App is the fastest growing financial brand in the world. Built to take the pain out of peer-to-peer payments, Cash App has gone from a simple product with a single purpose to a dynamic money app with over 15 million active monthly users.

Loved by customers and by pop culture, we’ve held the #1 spot in finance on the App Store for almost two years, and our social media posts see more engagement in a day than most financial brands see in a year.

With major offices in San Francisco, New York, St. Louis, Portland, Kitchener-Waterloo, and Melbourne, Cash App is bringing a better way to send, spend, and save to anyone who has ever sought an alternative to today’s banking system.


Job Description

We are looking for senior data science experts to help build Cash App, the fastest growing financial app in the world. Machine Learning is an integral part of how we design products, operate, and pursue Cash App’s mission to serve the unbanked and completely disrupt traditional financial institutions. Our massive scale and rich transaction data create an endless number of opportunities to use AI to better understand our customers and offer new products and experiences that can improve their lives. We are a highly creative group that prefers to solve problems from first principles. We move quickly, make incremental changes, and deploy to production every day.

Senior Data Scientist, Customer Support Automation

Working closely with our Customer Support team, you will use our vast amounts of data to make experiences seamless for our customers and help us achieve world-class service as Cash App continues its rapid growth. You will build models that anticipate customer issues and deliver proactive in-app suggestions, use NLP to contextualize inquiries and respond instantly with relevant content, develop prioritization algorithms that improve efficiency, and apply the latest research to automate conversations with customers.

Senior Data Scientist, Risk

Working closely with our Risk team, you will build machine learning models that detect fraudulent activity in real time. You will design new product features that drive down risk losses, experiment with state-of-the-art algorithms to drive down false positives, use any and every dataset at your disposal (including 3rd party data) to engineer new features for our risk models, verify customer documents using OCR, and use biometric and device signals to detect malicious logins and account takeovers.


You have

  • 3-5 years of relevant industry experience

  • A graduate degree in computer science, AI, ML, applied math, stats, physics, or a related technical field.

  • Experience working with product, design, and engineering to prioritize, scope, design, and deploy ML models

  • A track record of providing mentorship and technical leadership

  • An appreciation for the connection between the software you build and the experience it delivers to customers

  • A strong desire to perform and grow in your role

Technologies we use and teach

  • Python (numpy, pandas, sklearn, xgboost, TensorFlow, etc.)

  • MySQL, Snowflake, GCP, AWS, Tableau

  • Java

Additional Information

Fair and square

At Square, we value diversity and treat all employees and applicants based on merit, qualifications, competence and talent. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status or disability status. We will consider for employment qualified applicants with criminal histories.