Senior Software Engineer (Frontend), Ecosystem Engagement

  • San Francisco, CA
  • Full-time
  • Position open to remote: Yes

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 Ecosystem Engagement team is responsible for the largest customer facing web application at Square. Building features that support merchants across the ecosystem and throughout their entire lifecycle; as well as acting as role models and setting guidelines with impact across the company. 

As a Senior Engineer on the Ecosystem Engagement team, you will help build products that help merchants gain insights into both their business and Square as a set of tools to help them grow their dreams.

You will:

  • Oversee the entirety of your features - that includes component design, implementation, automated testing, and roll-out

  • Work with other engineers, designers, and product managers to develop excellent product experiences

  • Hold yourself, and your teammates accountable to the standards of engineering that enables Square to safely move billions of dollars in payments and allow our customers to trust us with their sensitive data

  • Work with and influence the larger Frontend community within Square


You have: 

  • Natural curiosity and desire to build products that merchants depend on

  • Desire to solve hard and engaging engineering problems

  • A deep understanding of frontend technologies

  • Interest and fulfillment in mentoring those around you

  • 5+ years professional experience

Technologies we use:

  • JavaScript, ES6, Ember, Sass, and other web-app frameworks

  • Test frameworks (e.g. QUnit, Mocha, Jasmine)

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