Senior Software Engineer, Payments Platform

  • Seattle, WA, United States
  • 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 Accounting Engineering team tracks every dollar and cent that goes in and out of a Square merchant’s dashboard. Customers and team members rely on this platform for the source of truth on their money’s movement, making this team essential to both Square’s success and a merchant’s business. As a Senior Software Engineer, you’ll join the team responsible for building the distributed systems that power this source of truth. 

You will:

  • Build cloud-native, general-purpose, multi-tenant, accounting services that will power the source of truth for merchant balances
  • Decompose the monolithic services powering all merchant accounting and settlement today into smaller microservices for greater scale and flexibility
  • Build systems that manage customers’ sensitive data and hold Square to the highest standards for security and compliance 
  • Work with our product, business, and finance teams to develop Square’s global payments strategy 
  • Mentor junior engineers on the team and report directly into a Senior Engineering Manager on the Payments Platform team


You have:

  • Experience building distributed systems and internal services - we use Java and Go
  • Bachelor's degree and 5+ years of relevant software experience in backend services
  • Natural curiosity and a desire to help build platforms that reliably move billions of dollars in a small, highly focused team
  • Nice to have: experience working with Kubernetes

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
  • Flexible time off
  • Learning and Development resources