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Block

Senior Software Engineer, Money Infra

Posted 2 Days Ago
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Melbourne, Victoria
Senior level
Melbourne, Victoria
Senior level
As a Senior Software Engineer on the Money Infrastructure team, you will design, build, and support systems to manage Cash App's treasury. Responsibilities include tackling complex technical challenges, collaborating with product managers and engineers, and leading the team in delivering scalable and secure financial infrastructure. You will utilize technologies like Java and AWS while mentoring fellow engineers.
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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 50+ 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.
The Role
Cash App's Financial Platform (Finplat) team is responsible for building systems that power products built by Cash App. We build deep integrations with underlying financial infrastructures and ensure that our products are able to scale.
The Money Infrastructure team (within Finplat) is responsible for core capabilities, including ledgering, reporting and inventory management, pricing, reconciliation (recon), settlements and treasury management. These systems are essential to tracking and managing the flow of funds, providing precision at scale, and enabling seamless financial operations for millions of customers worldwide.
Your team will focus on building robust, scalable, and secure infrastructure that powers key financial workflows-accurately tracking and managing funds across various accounts, and ensuring timely and accurate settlements. From maintaining ledger accuracy to optimising treasury systems and reconciliation pipelines, your leadership will enable Cash App to deliver a seamless, trustworthy, and compliant money movement experience for our customers.
Working cross-functionally with product managers, engineers, data teams, and finance stakeholders - you will define the team's vision, roadmap, and technical strategy. The systems you and your team build will directly influence Cash App's ability to scale financial services, unlock new product opportunities, and ensure operational excellence.
We have strong values of mutual respect and trust; support each other; celebrate wins; and prefer progress over perfection. Primarily, we're responsible for designing, building, and supporting the Treasury Management System which settles internal money movements automatically and stores those funds redundantly, in an accurate, transparent, traceable and scalable way.
You Will

  • Design, build and support the systems which manage the Cash App treasury.
  • Tackle complex technical challenges creatively and effectively; balancing competing priorities.
  • Own delivery at all stages: from design and architecture through to implementation and testing.
  • Partner closely with product managers, data analysts, and business leads to help define our roadmap and ensure alignment across teams and stakeholders.
  • Have autonomy to research and achieve outcomes with support when you need it.
  • Contribute to the growth of our development capability through leading, mentoring, and supporting fellow engineers.


You Have

  • 5+ years experience building and operating quality software.
  • Demonstrated technical initiative on previous projects.
  • Strong communication skills and ability to work cross-functionally, collaborating with diverse stakeholders and adapting to evolving priorities.
  • A product and customer-focussed mindset.
  • Natural curiosity to learn new technologies, solve interesting problems and build quality software.
  • Desire to perform and grow as an engineer.


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


Every benefit we offer is designed with one goal: empowering you to do the best work of your career while building the life you want. Remote work, medical insurance, flexible time off, retirement savings plans, and modern family planning are just some of our offering. Check out our other benefits at Block.
Block, Inc. (NYSE: XYZ) builds technology to increase access to the global economy. Each of our brands unlocks different aspects of the economy for more people. Square makes commerce and financial services accessible to sellers. Cash App is the easy way to spend, send, and store money. Afterpay is transforming the way customers manage their spending over time. TIDAL is a music platform that empowers artists to thrive as entrepreneurs. Bitkey is a simple self-custody wallet built for bitcoin. Proto is a suite of bitcoin mining products and services. Together, we're helping build a financial system that is open to everyone.

Top Skills

AWS
Datadog
DynamoDB
Event-Driven Architecture
Go
Grpc
Hibernate
HTTP
Java
JSON
Kafka
Kotlin
Kubernetes
MySQL
Prometheus
Protocol Buffers

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