Backend Software Engineer, Point of Sale Server

  • San Francisco, CA, USA
  • 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 Square Point of Sale mobile applications are the main entry point through which merchants work with Square. You'll report to the engineering lead and joining the Point of Sale Server team - that supports the development of features within those mobile applications that our merchants know and love.

To learn more about Point of Sale:

You Will:

  • Work with your fellow engineers to ensure that Square is delivering remarkable experiences to end-users;
  • Develop engineering designs and implementations of impactul end-user product features;
  • Maintain existing services and help them scale and improve to meet the needs of merchants;
  • Help the team refine existing and establish new engineering patterns and processes to guarantee a thoughtful development cycle.


You Have:

  • Excellent software engineering knowledge and a product mindset;
  • 4+ years professional experience working on web application backend systems in Java, Go, or Ruby;
  • Experience modeling data and working with relational databases;
  • Experience with or interest in learning about AWS or other cloud computing platforms;
  • Experience with modern HTML, CSS, and JavaScript UI Frameworks (React, Ember, Vue).
  • Desire to provide a great product;
  • A sense of customer empathy and an interest in the product direction.

Technologies we use:

  • Java / Guice / MySQL / Protocol Buffers / gRPC / JUnit
  • AWS - Terraform, S3, SNS, SQS, IAM
  • CDN - Fastly, CloudFront
  • ES6 JavaScript / TypeScript / EmberJS / SCSS / QUnit / Cypress

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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