Software Engineer (Backend/Fullstack), Invoices Team

  • San Francisco, CA
  • 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

Square Invoices is the easiest way for merchants to collect payments remotely from their buyers. Our customers love our product because it’s well designed, easy to use, and integrated with the rest of their business operations. We are a full stack team, spanning across engineering, design, product, operations and growth. As an engineer on the team, you’ll have a front row seat to roadmap and strategy discussions and will play a critical role in helping the team accomplish aggressive growth goals.

We are a small, focused, and rapidly growing team with an abundance of growth and impact opportunities. We focus on building the best invoicing solution to help our merchants create professional looking invoices so that they can get paid quickly from anywhere, at anytime. At the same time we are doing this in an efficient and scalable way, making smart choices about how to automate critical functions.

The ideal candidate is a product-minded, full-stack engineer who can help take an idea from prototype to launch.


You will:

  • Work closely with product and design partners, and Square leadership, to design and build cutting-edge product experiences

  • Be responsible for the entirety of your features; including API design, implementation, and automated testing.

  • Own and drive the architecture of our backend systems.

  • Design fault tolerant systems so the team can be brave and move fast, without ever negatively impacting our customers.

  • Hold your yourself, and your teammates, accountable to a high standard of engineering that enables Square to move billions of dollars in payments and safely manage our customers’ sensitive data.

You have:

  • Great engineering skills, strong CS fundamentals, and elegance in your work.

  • Passion for building products that are beautiful inside and out -- from their user experience to their robust and elegant design

  • Experience building great products and a proven track record of solving problems creatively.

  • A strong sense of ownership and a conviction in doing things the right way.

  • An appreciation for the connection between the software you build and the experience it delivers to customers.

  • Versatile in a team environment and battle-tested building products at scale.

  • Proficiency in at least one language and an enthusiasm to learn others. Our engineers have all kinds of backgrounds and are encouraged to move freely across our technology stack.

  • 4+ years professional experience.

Languages and technologies we use and teach:

  • Java, Ruby, Swift, ES6, Android, iOS

  • Guice, Guava, Protocol Buffers, jOOQ, Rails, ReactiveX Framework

  • MySQL, Redis, Kafka, Hadoop, Hive, Elasticsearch


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.