Software Engineer (Backend), Invoices

  • 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

Square Invoices is the easiest way for merchants to close sales and collect payments remotely. Our customers rely on our products because they are well designed, easy to use, and integrated with their business. We are a full-stack product oriented team, spanning across engineering, design, product, and marketing. You'll report to the engineering lead and will have a seat at the table in roadmap decisions and will help the team accomplish our industry-leading growth goals.

We are a focused and growing team with an abundance of opportunities in growth and influence. You'll focus on building the best tools to help our merchants close sales and get paid quickly, anywhere, at any time. At the same time, we are doing this in a thoughtful and scalable way, making smart choices about how to automate functions for our merchants. You are a product-minded, server engineer who can take an idea from prototype to a cornerstone of our merchants' business operations.

You will:

  • Work with other engineers, designers, and product managers to develop excellent product experiences.
  • Oversee the entirety of your features; including API design, implementation, automated testing, and rollout.
  • Manage the architecture of our backend systems.
  • Hold yourself, and your teammates accountable to the standards of engineering and that enables Square to safely move billions of dollars in payments and allow our customers to trust us with their sensitive data.
  • Help empower a team of engineers by mentoring individuals, promoting engineering, and applying your technical expertise to constantly raise the quality of design decisions and implementation by holding the team to a high standard.


You have:

  • 3+ years professional experience in software engineering.
  • Experience coding with a focus on return on investment, to provide remarkable solutions to our merchants.
  • Experience to different stages of product development. This can mean building code to iterate quickly, or building a sustainable system to support our product for years to come.
  • Experience with the connection between the software you build and the experience it provides to customers.
  • Experience working with designers, product managers, data scientists, marketing, and business development to achieve a great product.
  • First hand experience building products at scale.
  • Proficiency in at least one server-side language and an enthusiasm to learn others. Our engineers have all kinds of backgrounds and are encouraged to move freely across our technology stack.
  • The ability to provide technical mentorship and guidance to engineers of varying experience levels.

Languages and technologies we use and teach:

  • Languages: Ruby, Java
  • Frameworks: Rails, RSpec, Sidekiq, gRPC, Guice
  • Infrastructure: MySQL, Redis, Elasticsearch, Kafka

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

Square, Inc. (NYSE: SQ) builds tools to empower businesses and individuals to participate in the economy. Sellers use Square to reach buyers online and in person, manage their business, and access financing. Individuals use Cash App to spend, send, store, and invest money. And TIDAL is a global music and entertainment platform that expands Square's purpose of economic empowerment to artists. Square, Inc. has offices in the United States, Canada, Japan, Australia, Ireland, Spain, Norway, and the UK.

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