Senior Software Engineer, Money Platform

  • New York, NY, USA
  • Full-time
  • Current Square Employee?: Apply via go/jobs

Company Description

Cash App is the fastest growing financial brand in the world. 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 with over 24 million monthly active users. We are bringing a better way to send, spend, invest, and save to anyone who has ever sought an alternative to the traditional banking system. 

Loved by customers and pop culture, we’ve consistently held the top spot for finance in the App Store for many years, seeing more engagement with millions of followers across social media in a day than most brands see in a year. We are building an ecosystem to redefine the world’s relationship with money by making it universally accessible. 

We want to hire the best talent regardless of location. Our employment model is distributed, offering the opportunity to collaborate with teams across the world in San Francisco, New York, St. Louis, Portland, Toronto, Kitchener-Waterloo, Sydney, and Melbourne.

Job Description

The Cash engineering team is responsible for building and maintaining the systems that make it all work. As a server engineer on the commerce team, you will help build features and frameworks to enable engagement between Cash App customers and businesses, ranging from micro merchants to large enterprises. For small businesses, we leverage Cash App as a platform to deliver features needed for merchants to interact with their customers. Larger businesses utilize our Cash App Developers API to connect with Cash App customers. In both cases you will be working to evolve the identity of Cash App beyond a consumer brand.

As a member of the Cash App Money Platform team, you will

  • Build the primary services behind the Cash App Ledger 
  • Design, Build and Support the core systems used to power all transactions on CashApp

  • Break existing monoliths into microservices driven by events

  • Be involved in defining and implementing an expanding roadmap

  • Build and design APIs to be used as primitive building blocks for our ever-growing product suite

  • Participate in all parts of the delivery process from ideation, prioritization, productionization and beyond!

  • Have a core focus on scale so we not only handle today's customers but the customers of tomorrow


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

  • Bachelors Degree in Computer Science or equivalent experience

  • Demonstrated technical initiative on previous projects

Technologies we use and teach:

  • Java 11 including JUnit, Hibernate, Guice, and Jersey

  • Kotlin

  • HTTP, JSON, gRPC, and Protocol Buffers

  • MySQL

  • Amazon Web Services

  • Event driven architecture

  • Feature Engineering for Machine Learning

Additional Information

Cash App treats all employees and job applicants equally. Every decision is based on merit, qualifications, and talent. We do not discriminate on the basis of race, religion, colour, 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 each office’s corresponding local guidelines.