Senior Software Engineer

1 week ago

Seattle Washington, United States Cash App Full time
Job Overview

Cash App has experienced significant growth, serving millions of users and facilitating substantial financial transactions daily. To support this expansion, we are enhancing our Access division.

Our objective is to enhance trust and broaden access to our ecosystem, ensuring that every user feels secure while utilizing our platform.

We play a vital role in providing financial access to individuals who are often overlooked by conventional financial institutions, and we are dedicated to creating a smooth and secure user experience.


The Access division is fundamental to Cash App, overseeing authentication, session management, authorization, and safeguarding against account breaches and fraudulent logins.

We strive to establish a dependable technical framework and user-friendly features that allow legitimate customers to consistently access their accounts while protecting them from unauthorized access and fraudulent actors.


About the Access Teams:

Authentication Team:
The Access Authentication team is responsible for all aspects of authentication at Cash App. We ensure that our vast customer base can conveniently and securely access their financial resources.

In addition to developing and enhancing core authentication experiences, such as customer login and account recovery processes, we support Cash App's growth into new applications with reliable, well-structured access control mechanisms that minimize customer exposure to risks and fraud.


Account Security Team:

We guarantee that our customers can access Cash App safely and reliably while reducing barriers to entry into the financial system.

We facilitate Cash App's expansion into new applications and markets with dependable, well-designed control mechanisms that empower engineering teams throughout the organization.

This team is instrumental in identifying fraudulent activities and bot attacks to mitigate hacking and prevent account compromises. The team develops tools to gather fraudulent signals, recognize fraud patterns, and automatically counteract attacks. We provide security features and resources to safeguard customer accounts.

Account Foundations Team:

The Account Foundations team is focused on advancing our account model and account holder structure, fostering coherent relationship modeling between them, and enabling seamless access management.

This allows customers to manage multiple accounts and grant access to other accounts.

We ensure that the account model and infrastructure can scale with emerging product changes, maintaining a high level of account security and clear, intuitive user experiences, directly contributing to Cash App's strategic direction.

As a member of the Cash App Trust Access team, you will:

  • Design, build, and maintain the APIs and services that drive Cash App's authentication processes
  • Contribute to the safety of our customers by ensuring meaningful control over account security
  • Enhance our architecture to accommodate growth in customers and developers, working across extensive monolithic codebases and microservices
  • Collaborate with product management and design to create new, impactful experiences
  • Build incrementally, test thoroughly, and deploy regularly
  • Participate in live support rotations to ensure our systems operate effectively

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