Software Engineer

  • Toronto, ON, Canada
  • Full-time

Company Description

We believe the economy is better when everyone has access. When everyone has room to grow. No one should be left out because the cost is too great or the technology too complex. We started with a little white credit card reader but haven’t stopped there. We’re empowering the independent electrician to send invoices, setting up the favorite food truck with a delivery option, helping the ice cream shop pay its employees, and giving the burgeoning coffee chain capital for a second, third, and fourth location. We’re here to help sellers of all sizes start, run, and grow their business—and helping them grow their business is good business for everyone.

Job Description

You will:

  • Work with cutting edge, industry-leading payment acceptance hardware platforms

  • Contribute to the development of EMVCo Layer 2  payment software in Squares hardware products

  • Support the certification of this payment software in all of Squares hardware products

  • Partner with other engineering teams within Square to deploy the payments software to all of our products

  • Write great code within the constraints of tiny embedded systems

  • Design, implement, and maintain software update functionality of complex embedded systems


  • 2 years of Software development experience

  • Knowledge & experience with the C programming language

  • The ability to formulate and effectively communicate complex technical concepts to your colleagues

  • A strong software development discipline, including modularization and test methods

  • BS in CS, CE, EE, or equivalent practical experience

Even better:

  • Experience in EMV and Payment application development on smart cards

  • Experience in iOS or Android development

  • Expertise in C++ software development, tools, and debugging

  • Strong understanding of basic cryptography concepts

  • Experience shipping consumer electronics products

Additional Information

At Square, our purpose is to empower – within and outside of our walls. In order to build the best tools for the businesses and customers we support all over the world, we have to start at home with a workforce as diverse and empowered as our sellers. To this end, we take great care to evaluate all employees and job applicants equally, based on merit, competence, and qualifications. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, disability status, or any other characteristic protected by law. We encourage candidates from all backgrounds to apply and always consider qualified applicants with arrest and conviction records, in accordance with 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.