Software Engineer (Backend/Fullstack), Web Point of Sale

  • San Francisco, CA
  • Employees can work remotely
  • Full-time
  • Alternate Location: Seattle, United States

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

While Square is best known for the Point of Sale application that runs natively on iOS, Android, and Square-branded hardware devices - our team manages the Virtual Terminal product that enables computer-based sellers to accept payments using a web browser, without the need for a separate device. Virtual Terminal has been used to process remote payments over the phone, but now you will help our iniatives to expand the Virtual Terminal capabilities to support in-person use cases and more complex sellers - creating a suite of products for computer-based sellers in the US and across the globe. You will report to the engineering manager and work with other product and platform teams at Square.

To learn more about the Virtual Terminal product:

You Will:

As a Backend or Full-Stack Engineer on the team, you will...

  • Work with your fellow engineers and teammates to ensure that Square provides a comprehensive and cohesive web-based product to end-users;
  • Engineer designs and implementations of impactful end-user product features;
  • Help the team improve existing and establish new engineering patterns and processes to guarantee a successful 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 or interest in learning about modern HTML, CSS, and JavaScript UI Frameworks (React, Ember, Vue).
  • Experience or a desire to achieve 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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