Senior Software Engineer, Knowledge Platform

  • Remote, CA
  • Employees can work remotely
  • Full-time

Company Description

Square builds common business tools in unconventional ways so more people can start, run, and grow their businesses. When Square started, it was difficult and expensive (or just plain impossible) for some businesses to take credit cards. Square made credit card payments possible for all by turning a mobile phone into a credit card reader. Since then Square has been building an entire business toolkit of both hardware and software products including Square Capital, Square Terminal, Square Payroll, and more. We’re working to find new and better ways to help businesses succeed on their own terms—and we’re looking for people like you to help shape tomorrow at Square.

Job Description

All of Square's product services are organized into departments with their own product and engineering teams. Underneath, there's a connected platform team that supports the network. We are that platform. Through data pipelines, we collect data from across Square's ecosystem of products. Our knowledge graph infrastructure contains billions connections between millions entities across Square. This connected data is used across multiple teams, from getting more users onto the Square platform to feature development for statistical models. The scope of this team's work is expanding and there are many opportunities for improving Square's growing global audience.

Within our team, we're looking for engineers to focus on building Square's graph data systems. Our focus is on building fault tolerant systems that make operations, analysts and data scientists happier and more productive. Our infrastructure is used by product teams on both the Seller and Cash App sides of the business.

You will build APIs and databases that connect data from products across Square. You will work with our internal customers (Machine Learning Engineers, Data Scientists and Operations Agents) to understand their workflows.


  • A desire to design systems that solve our customer's problems; you want to understand your customers' needs.
  • You lead small projects and mentor junior engineers
  • The ability to produce production-quality code incorporating testing, evaluation, and monitoring
  • 5+ years of experience developing large-scale distributed data systems
  • Experience using any of the major cloud vendors (GCP, AWS, Azure)
  • Experience in any of: graph or network data, machine learning infrastructure
  • It is a plus if you have an advanced degree focusing in computer science or other computational fields.

We use and teach:

  • Java, Python, Google Cloud Platform, AWS, Snowflake, JanusGraph, and Docker
  • MySQL, Redis, Hibernate, jOOQ, and Bigtable
  • Python ML stack (pandas, scikit-learn, Jupyter, TensorFlow)

Additional Information

We’re working to build a more inclusive economy where our customers have equal access to opportunity, and we strive to live by these same values in building our workplace. Square is a proud equal opportunity employer. We work hard to evaluate all employees and job applicants consistently, without regard to race, color, religion, gender, national origin, age, disability, veteran status, pregnancy, gender expression or identity, sexual orientation, citizenship, or any other legally protected class. 

We believe in being fair, and are committed to an inclusive interview experience, including providing reasonable accommodations to disabled applicants throughout the recruitment process. We encourage applicants to share any needed accommodations with their recruiter, who will treat these requests as confidentially as possible. Want to learn more about what we’re doing to build a workplace that is fair and square? Check out our I+D page

Additionally, we consider qualified applicants with criminal histories for employment on our team, assessing candidates in a manner consistent with the requirements of the San Francisco Fair Chance Ordinance.


We want you to be well and thrive. Our global benefits package includes:

  • Healthcare coverage
  • Retirement Plans
  • Employee Stock Purchase Program
  • Wellness perks
  • Paid parental leave
  • Paid time off
  • Learning and Development resources

Square, Inc. (NYSE: SQ) builds tools to empower businesses and individuals to participate in the economy. Sellers use Square to reach buyers online and in person, manage their business, and access financing. Individuals use Cash App to spend, send, store, and invest money. And TIDAL is a global music and entertainment platform that expands Square's purpose of economic empowerment to artists. Square, Inc. has offices in the United States, Canada, Japan, Australia, Ireland, Spain, Norway, and the UK.

Privacy Policy