Cash App Pay is a retail payment network that leverages our vast omni-channel Seller ecosystem at Square to create innovative payment experiences through Cash App as showcased on shop.cash.app

As a software engineer on the Developer Experience team, you will be responsible for designing, building, and maintaining Cash App's API platform, which includes client authentication, a policy-based authorization framework, and managing our API specifications and versioning strategy across our system. You'll be joining the founding team early in the product life cycle, with plenty of opportunities to continue shaping it from an engineering and product-perspective.

You will:

• Work cross-functionally with our product, business, and finance teams to support new payment experiences for developers using our APIs and Web SDKs

• Own the design, development, and maintenance of new features and existing systems

• Design and implement high-volume, low-latency, distributed transaction processing systems, making thoughtful tradeoffs between consistency and availability when both are not possible

• Build systems that manage customers’ sensitive data and hold Cash App to the highest standards for security and compliance

• See the big picture to design fault tolerant systems so the team can be brave, move fast, and break things, without showing a negative impact to customers

You have:

• 8 or more years of software development or equivalent experience

• Experience working extensively with third-party APIs

• Experience with fault-tolerant and scalable distributed systems

• Strong desire to serve developers both internal and external

• A vested interest in advancing Cash App's vision of building for economic empowerment

Tools we use and teach:

• Kotlin

• Java 11 including JUnit, Hibernate, and Guice

• HTTP, JSON, gRPC, and Protocol Buffers

• MySQL, AWS Aurora

• Amazon Web Services

• Event-driven microservice architecture

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.