Top Engineering Jobs

Lead technical direction and hands-on development of Bitcoin and stablecoin iOS products across Cash App, Square, and Bitkey. Own architecture, implementation, testing, service integration, rollout, observability, security, and post-launch improvements. Build foundational systems, mentor engineers, influence cross-team standards, collaborate across platforms, and integrate AI-assisted development tools while maintaining software quality and reliability.

Build and operate database and storage platform software, including services, APIs, developer tools, provisioning automation, migrations, upgrades, and scaling solutions. Solve distributed systems and database performance challenges while ensuring reliability, correctness, and availability. Partner with engineering teams on schema design and platform adoption, lead technical projects through rollout and operations, participate in on-call response, and use AI tools thoughtfully in development.

Build and operate database and storage platform software, including services, APIs, and developer tools for provisioning, migrations, upgrades, and lifecycle management. Solve scaling, performance, reliability, and data correctness challenges across databases, distributed systems, cloud infrastructure, and networking. Partner with engineering teams on schemas and platform adoption, lead technical projects through rollout, participate in on-call response, and use AI-assisted tools in development.

Lead the development of foundational iOS platform systems, shared frameworks, developer tools, architecture standards, and multi-quarter migrations across Cash App and Square. Drive performance, reliability, security, testing, observability, release safety, and AI-assisted development practices. This hands-on individual contributor role influences multiple teams, develops technical leaders, and partners broadly to improve iOS engineering quality, productivity, and product outcomes.

Build and operate highly reliable card-issuing systems at the network boundary. Responsibilities include interpreting specifications, protocols, certifications, mandates, and production behavior; developing production software and conformance tooling; analyzing network messages; driving certification cycles; influencing card networks; mentoring engineers; applying AI-assisted engineering practices; and participating in on-call support for critical financial systems.

Staff Software Engineer responsible for building and operating Block’s card issuing platform at the network boundary. The role requires deep expertise in card networks, ISO 8583, authorization and clearing flows, certifications, mandates, and direct network connectivity. Responsibilities include writing production code, developing conformance tooling, debugging protocols, leading cross-team technical initiatives, influencing network requirements, mentoring engineers, supporting AI-assisted development, and participating in on-call operations for critical financial systems.

Lead hands-on engineering for Block’s card issuing platform, specializing in card-network integrations, ISO 8583 protocols, authorization, clearing, certification, mandates, and production behavior. Build software and conformance tooling, resolve network-level issues, drive certification cycles, influence technical direction, mentor engineers, apply AI-assisted development practices, and participate in on-call support for critical financial systems.

Build and maintain backend systems powering Cash App Taxes, including federal and state tax logic and e-file submission. Translate complex tax requirements into reliable, scalable, well-tested software; create tools enabling safe contributions; make architectural decisions; and improve accuracy, performance, security, deployment, and documentation. Collaborate with tax specialists, product, QA, cloud platform, design, customer care, and other teams while applying AI coding tools and best practices.

Build and operate a scalable data platform supporting warehousing, orchestration, business intelligence, governance, and agentic workflows. Develop Python services, Terraform infrastructure, and developer tools for petabyte-scale data. Partner with data practitioners and product teams, establish security and reliability patterns, set technical direction, improve engineering standards, and mentor engineers.

The Staff Software Engineer will lead technical strategies for the Cash App Banking team, overseeing architectural decisions, mentoring engineers, and developing financial products that improve customer banking experiences.