It all started with an idea at Block 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

As a member of the OS Platform team, you will be responsible for scaling product development on Cash’s rapidly growing distributed architecture by building core product infrastructure that powers both long-established and cutting edge Cash product features. This includes developing and scaling the protocols and rails by which we sync data to our mobile apps, orchestrate product flows, experimentation, and making our core data entities easily accessible.

You will:

• Own and scale core product infrastructure with tremendous processing requirements
• Develop primitives that enable and accelerate exciting new product features
• Write well-tested code
• Build incrementally and deploy daily
• Contribute to the broader tech and open source communities

You have:

• 3+ years of software development experience
• Boundless curiosity
• Drive to root cause systems with many moving parts and take whatever steps are necessary to fix them
• Demonstrated technical initiative and leadership on previous projects
• Strong track record of learning and teaching as a mechanism to grow as an engineer
• Ability to exemplify engineering best practices within yourself and export those to your team

Technologies we use and teach:

• Kotlin, Java
• HTTP, JSON, gRPC, Protocol Buffers
• Amazon Web Services (AWS)
• OkHttp, Jetty, JUnit, Guice
• MySQL, DynamoDB, ElasticSearch
• DataDog, SignalFx 

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. Block 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, veteran status, 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, assessing candidates in a manner consistent with the requirements of the San Francisco Fair Chance Ordinance.

Block, Inc. (NYSE: SQ) is a global technology company with a focus on financial services. Made up of Square, Cash App, Spiral, TIDAL, and TBD, we build tools to help more people access the economy. Square helps sellers run and grow their businesses with its integrated ecosystem of commerce solutions, business software, and banking services. With Cash App, anyone can easily send, spend, or invest their money in stocks or Bitcoin. Spiral (formerly Square Crypto) builds and funds free, open-source Bitcoin projects. Artists use TIDAL to help them succeed as entrepreneurs and connect more deeply with fans. TBD is building an open developer platform to make it easier to access Bitcoin and other blockchain technologies without having to go through an institution.