Senior Software Engineer (Backend), Square Capital

  • San Francisco, 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

The Business Financing team manages the full stack product experience for the Square Capital lending products. Within the Business Financing team, the Foundations team is pioneering new services and platforms for our financing products by re-imagining how we design and build with the cloud. 

You will:

  • Examine problems facing our team and adjacent teams and invent new patterns and solutions for software development in Capital
  • Experiment with new technologies and teach your peers how to use them in our work
  • Embed with sibling teams to share knowledge and drive architectural change across the organization
  • Work with peer engineers, platform teams, product managers, and designers to develop and deploy software products
  • Lead architectural and solution design discussions, ensuring our infrastructure is performant, fault tolerant, and maintainable
  • Build well-designed, reusable systems to model customer data, credit review procedures, and borrower experiences
  • Build systems that collect and maintain customers confidential data, while holding Square to the highest standards for security and compliance
  • Participate in ongoing training to maintain current knowledge of BSA/AML and perform BSA/AML responsibilities


You have:

  • 5+ years of software engineering experience
  • Interest in working on back-end systems, from APIs and business logic to optimizing databases, streams, software engines
  • Interest in modeling complex domains and building resilient systems to support real world applications
  • Strong software development skills and computer science fundamentals
  • Interest in working with other engineering teams and partners
  • Technical initiative and leadership on previous projects

Tools we use and teach:

  • AWS
  • Google Cloud
  • Go
  • Terraform
  • Ruby on Rails
  • ES6 & TypeScript
  • Ember.js

​​​​​​​Position is open to SF, NYC, & Remote*

Additional Information

At Square, we value diversity and always treat all employees and job 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 in a manner consistent with the requirements of 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.


At Square, 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
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