Senior Software Engineer, Payment API

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

As a software engineer on the Payment API team, you will help design, build, and maintain the payment services and infrastructure that move money for Square.

You will be deeply involved in the technical details of building highly available and reliable services, while also working with product teams to help Square to rapidly build new capabilities for our merchants and buyers all over the world.

You will:

• Expand and maintain our Payments APIs, used by both external developers ( public docs ) and Square products, an essential strategic asset of Square
• Design and implement high-volume, low-latency, distributed transaction processing systems, making thoughtful tradeoffs between consistency and availability when both are not possible
• Abstract away the legacy APIs of the financial world into consistent, coherent service APIs for Square and our sellers products to build upon
• Build systems that manage customers sensitive data and hold Square to the highest standards for security and compliance
• Mentor other engineers and contribute to the direction of the team
• Work with our product, business, and finance teams to develop Squares global payments strategy
• Design fault tolerant systems so the team can be brave, move fast, and break things, without ever showing a negative impact to customers

Qualifications

You Have:

• Understanding and curiosity in creating highly available, scalable, low-latency, global systems to reliably move billions of dollars
• Experience with and an understanding of how to successfully lead complex projects, breaking down the work into components and milestones that can easily be picked up by other engineers
• Interest in changing the payments landscape in the US and globally
• Bachelors degree and 8+ years of software development experience in Java, Go or similar

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)squareup.com.

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.

Perks

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

We’re working to build a more inclusive economy where our customers have equal access to opportunity, and we strive to live by these same values in building our workplace.

Square is a proud equal opportunity employer.

We work hard to evaluate all employees and job applicants consistently, without regard to race, color, religion, gender, national origin, age, disability, pregnancy, gender expression or identity, sexual orientation, citizenship, or any other legally protected class. 

We believe in being fair, and are committed to an inclusive interview experience, including providing reasonable accommodations to disabled applicants throughout the recruitment process.

We encourage applicants to share any needed accommodations with their recruiter, who will treat these requests as confidentially as possible.

Additionally, we consider qualified applicants with criminal histories for employment on our team, and always assess candidates on an individualized basis.

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 Squares purpose of economic empowerment to artists.

Square, Inc.

has offices in the United States, Canada, Japan, Australia, Ireland, Spain, Norway, and the UK.