Senior Software Engineer

2 months ago

Seattle, Washington, United States Block Full time

Company Description
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 ecosystem, developing unique financial products, including Afterpay/Clearpay, to provide a better way to send, spend, invest, borrow and save to our 57 million monthly active customers. We want to redefine the world's relationship with money to make it more relatable, instantly available, and universally accessible.
Today, Cash App has thousands of employees working globally across office and remote locations, with a culture geared toward innovation, collaboration and impact. We've been a distributed team since day one, and 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
Job Description
Cash App has grown rapidly to 70+ million users moving billions of dollars daily. To support this, we are building out Trust - a new Platform organization responsible for product experiences aimed at promoting the health of the increasingly complex Cash App ecosystem. Trust works to improve Cash App access for our customers, while limiting access for bad or unauthorized users by detecting and preventing improper use across all of our core product areas. The teams under Trust creating these mission critical services and products include Identity, Access, Risk Controls and Support Automation.
We appreciate broad perspectives, a willingness to dive deep, and a readiness to work collaboratively across many disciplines (including product, design, operations, legal, data science, ML).
The Access team is responsible for all things authentication and authorization at Cash. We ensure that our millions of customers can access Cash App safely and reliably while minimizing barriers to entry to the financial system. In addition to refining the core authentication customer experience, we support Cash App's expansion into new use cases and markets with reliable, well-designed access control primitives that empower engineering teams across the company.
As a Senior Software Engineer on Trust Access, you will:

  • Design, build, and operate the APIs and services that power Cash authentication and authorization
  • Evolve our architecture to scale with growth in customers and developers, working across large monolith codebases and microservices
  • Collaborate with product management and design to lead the development of new, high-impact experiences and help define the roadmap
  • Mentor, lead, and support your colleagues to grow the team
  • Contribute to the broader tech and open source communities

Qualifications
You have:

  • Must be based in PST due to working with our team in Australia
  • 5+ years experience building and operating quality software
  • Demonstrated technical initiative on previous projects
  • Strong communication skills and customer empathy
  • High technical standards in software testing and delivery
  • Growth mindset and a healthy comfort with ambiguity

Bonus:

  • Experience with product security and authN/authZ standards
  • Experience working in large codebases and breaking apart monoliths
  • Experience working in a distributed team

Technologies we use and teach:

  • Java, Kotlin, Golang
  • HTTP, JSON, gRPC, Protocol Buffers
  • MySQL, Hibernate, DynamoDB
  • Kafka and event-driven architecture
  • DataDog, Prometheus
  • AWS, Kubernetes

Qualifications
You have:

  • Must be based in PST due to working with our team in Australia
  • 5+ years experience building and operating quality software
  • Demonstrated technical initiative on previous projects
  • Strong communication skills and customer empathy
  • High technical standards in software testing and delivery
  • Growth mindset and a healthy comfort with ambiguity

Bonus:

  • Experience with product security and authN/authZ standards
  • Experience working in large codebases and breaking apart monoliths
  • Experience working in a distributed team

Technologies we use and teach:

  • Java, Kotlin, Golang
  • HTTP, JSON, gRPC, Protocol Buffers
  • MySQL, Hibernate, DynamoDB
  • Kafka and event-driven architecture
  • DataDog, Prometheus
  • AWS, Kubernetes

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