Senior Software Engineer, Customer Engagement Platform - Cash App

  • San Francisco, CA, USA
  • Employees can work remotely
  • Full-time
  • Current Square Employee?: Apply via go/jobs with your Square email.

Company Description

Cash App is the fastest growing financial brand in the world. 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 money app with over 35 million active monthly users.

Loved by customers and by pop culture, we’ve held the #1 spot in finance on the App Store for almost two years, and our social media posts see more engagement in a day than most financial brands see in a year.

With major offices in San Francisco, New York, St. Louis, Portland, Kitchener-Waterloo, and Melbourne, Cash App is bringing a better way to send, spend, and save to anyone who has ever sought an alternative to today’s banking system

Job Description

The Growth Platform team builds platforms that power the customer journey, intelligently guiding customers through our ecosystem of products with personalized, relevant messaging.  We are looking for a senior fullstack software engineer to help build a multi-channel Engagement/Ads Platform that will enable Cash App product teams and others to deliver personalized, real-time communications across email, push, SMS, and in-app messaging.

What you’ll do

  • Design and implement a self-serve multi-channel engagement platform to power in-product messaging that reaches tens of millions of Cash App customers every day.  

  • Integrate real-time customer data with our engagement platform to seamlessly enable real-time, triggered, personalized experiences.

  • Partner with mobile, design, machine learning teams to develop new features and businesses powered by our core engagement platform.

  • Work with product stakeholders across the company to invent and deliver new in-app experiences that increase acquisition, engagement, and retention.


  • Bachelor's Degree in Computer Science or equivalent experience

  • 8+ years of relevant industry or equivalent experience

  • Natural curiosity and persistence

  • Excellent programming skills

  • Demonstrated experience working collaboratively in cross-functional teams

We use and teach:

  • Java, Kotlin

  • React, Redux

  • AWS

  • HTTP, JSON, gRPC, Protocol Buffers

  • OkHttp, Jetty, JUnit, Guice

  • Hibernate, MySQL, DynamoDB

  • Kafka, events, microservices

  • DataDog, Prometheus, SignalFx

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, ethnicity, national origin, gender, sexual orientation, age, marital status, disability status, or any other characteristic protected by applicable law. 

We will consider for employment qualified applicants with criminal histories in a manner consistent with each office’s corresponding local guidelines and applicable regulations.

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