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 mission is to make money instantly available and universally accessible - all the products and features we've released in the app are based on those principles. Lending is one of the newest Cash App products and we're looking for a Software Engineer to join this team and help deliver on our vision of economic empowerment.

Lending offers Cash App and Afterpay users low-friction access to credit without prohibitive repayment terms, and the Lending Engineering team is focused on building the complex systems and tooling to support access and availability.The Lending Engineering team focuses on building the products and platforms that help deliver this access and credit to our customers at scale. We're looking for people who are as excited about our mission as they are about the technical challenges we have.

You Will

• Partner closely with credit risk, legal & compliance, product managers and other engineers to take the Lending capability to the next level.
• Lead or contribute to projects from hypothesis to production capability, ensuring ownership of the output quality.
• Build financial primitives by acting as an IC or lead on atomic, composable, API-level building blocks that serve the Block's intelligence layer.
• Take a developer-centric approach to designing and building clean APIs, optimizing strictly for uptime, latency, regulatory compliance, and cost-per-transaction.
• Experiment with emerging approaches and support team capability by sharing learnings and providing feedback.
• Operate and manage existing Cash services.
• Make recommendations to improve the team and wider Engineering practices.
• Help interview candidates, organize external recruiting/networking activities, and contribute to the broader tech and open-source communities.

You Have

• Embrace an AI-first mentality. Leverage AI to augment your knowledge and capability in navigating development in complex systems with confidence.
• Familiar with agentic engineering.
• 5+ years working on complex systems and delivering quality software, with clear expertise developed in one or more technical areas.
• Curiosity that pushes you to find flaws in complex systems and take whatever steps are necessary to fix them.
• Resilience to persevere in complex situations across multiple axes: e.g., scale, uncertainty, and interconnectedness.
• Self-directed and comfortable with ambiguity, with a willingness to publish your reasoning and be wrong publicly—which is essential for thriving in our transparent DRI/IC model.

Technologies We Use and Teach

• Java, Kotlin
• AWS
• HTTP, JSON, gRPC, Protocol Buffers
• OkHttp, Jetty, JUnit, Guice
• Hibernate, jOOQ, Aurora, MySQL, DynamoDB, Redis, Vitess
• Kafka, event-driven architecture, microservices
• DataDog
• Buildkite, Gradle

We’re working to build a more inclusive economy where our customers have equal access to opportunity, and we strive to live by these same values in building our workplace. Block is an equal opportunity employer evaluating all employees and job applicants without regard to identity or any legally protected class. We also consider qualified applicants with criminal histories for employment on our team, and always assess candidates on an individualized basis.We believe in being fair, and are committed to an inclusive interview experience, including providing reasonable accommodations throughout the recruitment process. If you require an accommodation, let your recruiter know.  Want to learn more about what we’re doing to build an inclusive workplace? Check out our Inclusion & Diversity page.

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

On Cash App's Controls team, we build essential platform infrastructure that protects millions of Cash App customers while ensuring fair and equitable access to financial services. We partner across engineering, product, and risk teams to build highly-available infrastructure that powers critical trust and safety decisions throughout Cash App's ecosystem. We are an AI-driven engineering team — we use agentic coding tools across our entire development lifecycle, from design exploration through implementation and review, and we expect every engineer to do the same. In this role, you'll implement scalable solutions that enable billions of safe customer interactions that create a holistic experience that fosters the trust, safety, security, and support of our customers and their assets, directly contributing to Block's mission of economic empowerment through accessible and secure financial services.

You Will

• Partner closely with product managers, designers, engineers, and business leads to scope, plan, design, build, and launch new features as well as maintain existing functionality of our product controls ecosystem
• Lead technical discussions within your team and contribute to design and product discussions with partners across the organization
• Leverage your experience and knowledge to grow your teammates' technical breadth and depth through mentoring
• Direct AI agents across the full development lifecycle — from prototyping and implementation to debugging and code review — operating as the architect and decision-maker while AI handles the building
• Expand what's possible with AI tooling — identify opportunities to automate repetitive work, improve code quality through AI-driven review, and share effective patterns with your team

You Have

• 6+ years experience building and operating highly available services
• Experience contributing to cross-functional technical efforts and coordinating across teams
• Strong collaboration skills and customer empathy
• A growth mindset and comfort navigating open-ended problems
• Well-developed curiosity and initiative to build creative solutions to complex problems
• Contributed to the growth of fellow engineers through technical leadership and mentoring
• Demonstrated fluency with AI-assisted development tools (e.g., Claude Code, Cursor, GitHub Copilot, or similar agentic coding tools) in real production work — not just familiarity, but regular, effective use
• You stay current on the rapidly evolving landscape of AI tooling and actively experiment with new capabilities as they emerge

Technologies We Use and Teach

• AI-Driven Development: Claude Code, Goose (Block's open-source AI agent), Cursor, GitHub Copilot, Anthropic's Model Context Protocol (MCP)
• Kotlin, Java
• HTTP, JSON, gRPC, Protocol Buffers
• DynamoDB, MySQL
• Event-driven architecture (Kafka)
• DataDog, Prometheus
• AWS, Kubernetes

We’re working to build a more inclusive economy where our customers have equal access to opportunity, and we strive to live by these same values in building our workplace. Block is an equal opportunity employer evaluating all employees and job applicants without regard to identity or any legally protected class. We also consider qualified applicants with criminal histories for employment on our team, and always assess candidates on an individualized basis. We believe in being fair, and are committed to an inclusive interview experience, including providing reasonable accommodations throughout the recruitment process. If you require an accommodation, let your recruiter know.  Want to learn more about what we’re doing to build an inclusive workplace? Check out our Inclusion & Diversity page.