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Block

Software Engineer, Cash App - Lending Products

New York, NY, United States of AmericaFrom $270kmidAdded 1 month ago

About this role

Join Cash App's Lending team to build scalable financial systems that provide accessible credit to millions of users. You'll design and develop complex APIs and platforms while collaborating with cross-functional teams on high-impact projects from concept to production.

What you'll do

  • Design and build developer-centric APIs optimized for uptime, latency, compliance, and cost efficiency
  • Lead or contribute to lending projects across the full lifecycle, ensuring quality ownership
  • Create financial primitives and composable building blocks serving Block's broader intelligence layer
  • Partner with credit risk, legal, compliance, and product teams to advance lending capabilities
  • Operate and maintain existing Cash App services in production
  • Mentor team members, conduct interviews, and contribute to engineering practices and open-source communities

What they're looking for

  • 5+ years building complex systems and delivering quality software
  • Java and Kotlin proficiency
  • Microservices and event-driven architecture
  • Database design (MySQL, Aurora, DynamoDB, Redis, Vitess)
  • AWS cloud infrastructure
  • gRPC, Protocol Buffers, and API design
  • AI-first development mindset and agentic engineering familiarity
  • Ability to navigate ambiguity and thrive in transparent, distributed decision-making models
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Block

Block builds financial infrastructure and lending platforms powering multiple brands including Cash App and Afterpay, along with bitcoin mining hardware through its Proto division. The company is hiring Software Engineers, Backend Infrastructure specialists, Product & Test Engineers, and Legal Systems Engineers to scale payments, lending systems, mining ASICs, and legal technology operations.

Website
block.xyz
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Likely interview questions

  • Describe your experience designing and building low-latency, high-availability APIs at scale. How did you optimize for uptime and cost?
  • Tell us about a time you worked on a complex financial or payment system. What were the key technical challenges and how did you approach regulatory or compliance requirements?
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