Senior Software Engineer - Availability, Cash App

It all started with an idea at Square in 2013. Initially built to take the pain out of peer-to-peer payments, Cash App has gone from a simple product with a single purpose to a dynamic app, bringing a better way to send, spend, invest, and save to our millions of monthly active users. We want to make the world’s relationship with money more relatable, instantly available, and universally accessible. This is our mission, and it’s why working at Cash App means so much more than a job.

Today, Cash App has thousands of employees working globally across office and remote locations, with a culture geared toward creativity, collaboration and impact. We’ve been a distributed team since day one, and we’ve got offices and remote teammates across the globe. Our offices are great, but many of our roles can be done remotely from the countries where Cash App operates. No matter the location, we tailor our experience to ensure our employees are creative, productive, and happy.

Check out our locations, benefits, and more at cash.app/careers to learn more!

The Cash engineering team is responsible for building and maintaining the systems that make it all work.  Every one of our customers needs fast and reliable access to their accounts, and the Cash Availability engineering team is responsible for making sure that happens. We care about infrastructure that makes it easy to write software that is secure, efficient, and tested. This includes the feature flagging interface used by all of Cash Engineering, which we have deep focus on building out safety rails and improving user experience. We examine metrics to find and fix any problems that arise from a massively scaled app, and if those metrics don’t exist we build them. We take an active hand in incident response, both in responding quickly to incidents as well as owning the tooling to improve response. We’re a team of senior engineers with a very wide breadth of experience, and we frequently work in teams to tackle big problems.

As a member of the Cash Availability team, you will:

• Own infrastructure projects that provide critical support for tremendous processing requirements
• Dig into the many parts of a large platform using a wide variety of analytical tooling, and if necessary, to add some new ones
• Use a data-driven approach to make the call on any new infrastructure that might need to be added, whether it’s off-the-shelf or built in-house
• Knock down pieces of infrastructure, examine the response, improve on it
• Unit test your stuff
• Work with bleeding edge cloud and database tech

You have:

• Boundless curiosity, persistence and a desire to get things done
• Ability to work autonomously, in ambiguity and collaboratively
• Strong communication skills
• Worked on systems where data consistency and availability is required
• Bachelor's Degree in Computer Science or equivalent experience
• Demonstrated technical initiative on previous projects

Technologies we use and teach:

• Java 11 including JUnit, Hibernate, Guice
• Kotlin
• Go
• HTTP, JSON, gRPC, and Protocol Buffers
• MySQL
• LaunchDarkly
• Amazon Web Services
• Event driven architecture
• Distributed databases like Vitess, Dynamo and TiDB

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. Want to learn more about what we’re doing to build a workplace that is fair and square? Check out our I+D page. 

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 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.