Remote Developer Experience Engineer - Shape Large-Scale Builds

Block; San Francisco (CA); Remote; USD 218,000 - 327,000; Full time

Benefits offered by this job

Remote work

Medical insurance

Flexible time off

Retirement savings plans

Modern family planning

Job summary

Block, Inc. in San Francisco is seeking a Developer Experience Engineer to improve the tools, codebase, and workflows used by engineers and AI agents.

You will own the developer experience in our largest monorepos, driving framework upgrades, language migrations, and healthy dependencies across teams. This high-leverage role focuses on building scalable build tooling, CI efficiency, and safe automation while mentoring others on migration strategy and codebase health to accelerate engineering

Qualifications

• Significant experience (typically 7+ years for Senior, 10+ for Staff) working in large, complex codebases.
• 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.
• Comfort navigating unfamiliar code quickly and making sound changes across many teams' areas.
• Strong communication skills and the ability to build trust with teams whose code you're changing.

Responsibilities

• 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
• Identify friction in the developer workflow (slow builds, flaky tests, confusing abstractions) and fix the root causes
• Improve build tooling and CI performance, including work with Bazel or a comparable build system
• Build the guardrails, tests, and automation that make large, automated changes safe to land
• Partner with product engineering teams to understand their pain points and measure the impact of your work
• Set technical direction and mentor other engineers on migration strategy, tooling, and codebase health

Skills

Senior experience

Codebase navigation

Agentic loops

Leadership of migrations

Communication

Tools

Bazel

Buck

Pants

Nx

Gradle

Job description

Block, Inc. in San Francisco is seeking a Developer Experience Engineer to improve the tools, codebase, and workflows used by engineers and AI agents.

You will own the developer experience in our largest monorepos, driving framework upgrades, language migrations, and healthy dependencies across teams. This high-leverage role focuses on building scalable build tooling, CI efficiency, and safe automation while mentoring others on migration strategy and codebase health to accelerate engineering