Remote Senior DevEx Engineer: Agent Tooling & Guardrails

Block; Oregon; Hybrid; USD 218,000 - 327,000; Full time

Benefits offered by this job

Remote work

Medical insurance

Flexible time off

Retirement savings plans

Family planning support

Job summary

Block, Inc. is hiring a Developer Experience Engineer to build tooling and agent workflows that enable engineers and autonomous agents to change our extensive monorepos quickly and safely.

You will own interfaces for observing, steering, and providing context to agents, and you will craft guardrails that keep complexity in check as agents handle bigger changes. You will design agentic loops, build scalable workflows for framework upgrades and language migrations, and drive adoption across the

Qualifications

• Shipping developer tooling at scale with measurable adoption and support.
• Building agent workflows with tool use, context management, and verification.
• Leading migrations or large refactors from planning through rollout.

Responsibilities

• Build and ship tools engineers and their agents use daily (CLIs, desktop integrations, observing, unblocking, steering).
• Design and evolve agentic loops and harnesses for reliable engineering work.
• Drive large-scale changes across codebases with minimal disruption to product teams.
• Build guardrails, tests, and automation to keep agent-authored changes safe to land.
• Identify friction in development workflows for humans and agents and fix root causes.
• Partner with internal and external builders to measure adoption and impact of your work.
• Set technical direction and mentor engineers on agent design, tooling, and codebase health.

Skills

Developer tooling

Agent workflows

Framework upgrades

Large codebases

Communication

Job description

Block, Inc. is hiring a Developer Experience Engineer to build tooling and agent workflows that enable engineers and autonomous agents to change our extensive monorepos quickly and safely.

You will own interfaces for observing, steering, and providing context to agents, and you will craft guardrails that keep complexity in check as agents handle bigger changes. You will design agentic loops, build scalable workflows for framework upgrades and language migrations, and drive adoption across the