Senior Software Development Engineer

2 days ago
Sacramento, CA, United States Block Full-time
The blocks that form our foundational teams — People, Finance, Counsel, Hardware, Information Security, Platform Infrastructure Engineering, and more — provide support and guidance at the corporate level. They work across business groups and around the globe, spanning time zones and disciplines to develop inclusive People policies, forecast finances, give legal counsel, safeguard systems, nurture new initiatives, and more. As a Developer Experience Engineer, you’ll make our large, evolving codebase easier to build, change, and reason about, for both human developers and AI agents.

You will be responsible for the developer experience in our largest monorepos: building tools for and driving framework and language migrations, keeping dependencies healthy, improving build and test infrastructure, and shaping how agentic workflows operate in our development process. Every improvement you ship multiplies across the whole engineering organization.

Lead and execute large-scale changes across the codebase, including framework upgrades, language migrations, and dependency updates, with minimal disruption to product teams

Design and evolve agentic loops: the plan, act, verify, and iterate cycles that let AI agents do real engineering work safely and reliably

Improve build tooling and CI performance, including work with Bazel or a comparable build system

Deep experience with application or platform frameworks, including upgrading them and managing their evolution over time

Track record of leading migrations or large refactors, from planning through rollout

A solid understanding of agentic loops (tool use, context management, verification, failure handling) and a genuine willingness to keep investing in and evolving them as the field changes

Experience building or integrating LLM-based coding tools into engineering workflows

Application Guidelines

Candidates may submit up to 9 active applications within a 60-day period. Reapplications to the same role are accepted 90 days after a previous application has been reviewed.

Use of AI in Our Hiring Process

We may use automated AI tools to evaluate job applications for efficiency and consistency. These tools comply with local regulations, including bias audits, and we handle all personal data in accordance with state and local privacy laws.

Contact us here with hiring practice or data usage questions.

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.

Each of our brands unlocks different aspects of the economy for more people.

makes commerce and financial services accessible to sellers.

Cash App

is transforming the way customers manage their spending over time.

is a music platform that empowers artists to thrive as entrepreneurs.

Together, we’re helping build a financial system that is open to everyone.

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