Data Scientist, Seller

  • San Francisco, CA, USA
  • Full-time

Company Description

We believe the economy is better when everyone has access. When everyone has room to grow. No one should be left out because the cost is too great or the technology too complex. We started with a little white credit card reader but haven’t stopped there. We’re empowering the independent electrician to send invoices, setting up the favorite food truck with a delivery option, helping the ice cream shop pay its employees, and giving the burgeoning coffee chain capital for a second, third, and fourth location. We’re here to help sellers of all sizes start, run, and grow their business—and helping them grow their business is good business for everyone.

Job Description

As a Data Scientist at Square, you will lead projects that derive value from our unique, rich, and rapidly growing data. We partner with business, product, and operations teams to drive better decisions, automated and human, using sophisticated modeling and machine learning. Were a passionate team of hackers, statisticians, and optimizers who are resourceful in distilling questions, wrangling data, and driving decisions.


Within Seller, you will work in one of the following teams:

Channel Optimization:

The Channel Optimization team grows Square’s product and services by applying data science to intelligently reach customers over the right channel, at right time with the right message and product. This team measures results by driving higher return on investment on our most important go-to-market initiatives across  Marketing, Notifications, Account Management, Sales and more. Our team solves problems such as response modeling / spend optimization for new customers across media channels (direct mail, paid search), product recommendation for existing customers, and automated outreach to sellers through our account management teams.


Seller Modeling and Understanding:

The Seller Modeling and Understanding team provides Square with a better and deeper understanding of our sellers. We do this through the creation and maintenance of shared signals, models, and frameworks that help anyone at Square understand our sellers’ intent and value. We own widely used estimations such as lifetime value, churn, seasonality, and more. Our central value is to further understanding for our sellers so Square can easily and reliability make decisions based on our products, be they strategic or real-time.


You will:

  • Use and learn a diverse set of techniques spanning machine learning (including deep learning), causal inference, and other forms statistical modeling to solve import business and product problems

  • Drive cross functional data science projects from beginning to end: build relationships with partner teams, frame and structure questions, collect and analyze data, research, prototype, and build out data science pipelines and models, as well as summarize and present methodology and key insights

  • Work with engineers to implement data science solutions that operate effectively at scale

  • Collaborate with business leaders, subject matter experts, and decision makers to develop success criteria and optimize new products, features, policies, and models

  • Help build the next generation of data products at Square


You have:

  • 2+ years industry experience in data science or machine learning-focused roles

  • An advanced degree (M.S., PhD.), preferably in Statistics, Computer Science, Physical Sciences, Economics, or a related technical field

  • A strong track record of performing data analysis using Python (numpy, pandas, scikit-learn, etc.) and SQL

  • Familiarity with Linux/OS X command line, version control software (git), and general software development

  • Experience using statistics and machine learning to solve complex business problems

  • The versatility and willingness to learn new technologies on the job

  • The ability to clearly communicate complex results to technical and non-technical audiences

Additional Information

All your information will be kept confidential according to EEO guidelines.

At Square, our purpose is to empower – within and outside of our walls. In order to build the best tools for the businesses and customers we support all over the world, we have to start at home with a workforce as diverse and empowered as our sellers. To this end, we take great care to evaluate all employees and job applicants equally, based on merit, competence, and qualifications. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, disability status, or any other characteristic protected by law. We encourage candidates from all backgrounds to apply and always consider qualified applicants with arrest and conviction records, in accordance with the San Francisco Fair Chance Ordinance. Applicants in need of special assistance or accommodation during the interview process or in accessing our website may contact us by sending an email to assistance(at) We will treat your request as confidentially as possible. In your email, please include your name and preferred method of contact, and we will respond as soon as possible.